Honda CIVIC 10G 2016 Fuel And Emissions Systems Page 1

Fuel and Emissions Systems Service Precautions
Fuel Flow Line Disconnection
Flammable - Keep fire away; Make no fires around the work area, and handle the fuel carefully very much. Catching a fire to fuel
will cause a serious accident.
Relieve the fuel pressure before the fuel line disconnection to avoid a risk for fuel blowing from there.
Disconnect the 12 volt battery negative terminal before the electric connector disconnection to avoid a risk for catching fire which
is caused by the sparks coming off the connector.
Clean the contact area of the joint. Any dirt may cause fuel leakage by a misconnection.
Others
Do not apply the brake fluid, engine coolant, plant-based oil, or alcohol-based oil to the O-ring. An undesignated fluid or oil may
affect material deterioration or damage.
Follow the instructions, or you will not be able to take a quality guarantee for the parts.
Fuel and Emissions Systems Service Precautions 1955 http://techinfo.honda.com/rjanisis/pubs/sm/1/2/Contents/enu/61TBAD/...
1 of 1 12/20/2018 6:54 AM
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Contents Summary of Fuel And Emissions Systems

  • Page 1Fuel and Emissions Systems Service Precautions Fuel Flow Line Disconnection Flammable - Keep fire away; Make no fires around the work area, and handle the fuel carefully very much. Catching a fire to fuel will cause a serious accident. Relieve the fuel pressure before the fuel line disconnection to
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  • Page 68Fuel and Emissions Systems Circuit Diagram cardiagn.com
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  • Page 81Fuel and Emissions Systems Component Location Index cardiagn.com
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  • Page 86Fuel and Emissions Systems Component Location Index cardiagn.com
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  • Page 89KA/KC/KL models cardiagn.com '16 KA/KC models
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  • Page 91KL models KA/KC except '16 models cardiagn.com KX models
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  • Page 94Fuel and Emissions Systems Component Location Index cardiagn.com
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  • Page 97KA/KC/KL models cardiagn.com '16 KA/KC models
  • Page 98KL models KA/KC except '16 models cardiagn.com KX models
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  • Page 101Fuel and Emissions Systems Component Location Index cardiagn.com
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  • Page 108CKP Pattern Clear/CKP Pattern Learn Procedure NOTE: Clearing the DTCs with the HDS does not require you to do this procedure. The PCM memorizes the learning status in its memory after passed an hour from turning the vehicle to the OFF (LOCK) mode. If you need to disconnect the 12 volt battery termin
  • Page 109- '16-17 except Si: From 3,200 rpm down to 1,500 rpm '17 Si, '18-19 : From 1,520 rpm down to 1,300 - rpm KX models M/T - From 3,200 rpm down to 1,500 rpm CVT - From 3,200 rpm down to 1,500 rpm 3. Repeat step 2 several times. 4. Turn the vehicle to the OFF (LOCK) mode. 5. Turn the vehicle to the ON m
  • Page 110CKP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Undercover Plate - Remove 2. CKP Sensor Cover Bolt - Loosen 3. CKP Sensor Cover - Remove
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  • Page 1124. CKP Sensor - Remove 5. All Removed Parts - Install 1. Install the parts in the reverse order of removal. cardiagn.com
  • Page 113CKP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Undercover Plate - Remove 2. CKP Sensor Cover Bolt - Loosen and Remove 3. CKP Sensor Cover - Remove 4. CKP Sensor - Remove
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  • Page 1155. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring. 6. CKP Pattern - Clear/Learn (when replacing) cardiagn.com
  • Page 116CKP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Undercover Plate - Remove 2. CKP Sensor Cover Bolt - Loosen and Remove 3. CKP Sensor Cover - Remove 4. CKP Sensor - Remove 5. All Removed Parts - Install
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  • Page 1181. Install the parts in the reverse order of removal with a new O-ring. 6. CKP Pattern - Clear/Learn (when replacing) cardiagn.com
  • Page 119CMP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace Intake Side (CMP Sensor A) 1. Engine Cover - Remove 2. CMP Sensor A - Remove 3. All Removed Parts - Install 1. Install the parts in the reverse order of removal. Exhaust Side (CMP Sensor B)
  • Page 1201. Engine Cover - Remove 2. CMP Sensor B - Remove 3. All Removed Parts - Install 1. Install the parts in the reverse order of removal. cardiagn.com
  • Page 121CMP Sensor Removal and Installation 1 Intake Side (CMP Sensor A) cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 2 Exhaust Side (CMP Sensor B)
  • Page 122cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace Intake Side (CMP Sensor A) 1. CMP Sensor A - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring. 3. CKP Pattern - Clear/Learn (when replacing) NOTE: When replacing CMP sensor A, do this procedu
  • Page 123CMP Sensor Removal and Installation 1 Intake Side (CMP Sensor A) Torque: N·m (kgf·m, lbf·ft) cardiagn.com Replace 2 Exhaust Side (CMP Sensor B)
  • Page 124cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace Intake Side (CMP Sensor A) 1. CMP Sensor A - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring. 3. CKP Pattern - Clear/Learn (when replacing) Exhaust Side (CMP Sensor B) 1. CMP Sensor B - Remo
  • Page 125ECT Sensor 1 Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Coolant - Drain 2. Throttle Body Inlet Pipe - Remove NOTE: Remove the necessary part(s). 3. ECT Sensor 1 - Remove 4. All Removed Parts - Install
  • Page 1261. Install the parts in the reverse order of removal. cardiagn.com
  • Page 127ECT Sensor 1 Removal and Installation NOTE: Where icon is shown, click for further information. 1 cardiagn.com Detailed information, notes and precautions Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Coolant - Drain 2. Intake Air Duct - Remove 3. PCS Guard - Remove 4. Hose - Move
  • Page 1281. Move the hose from the hose clamp. NOTE: Do not disconnect the hose. Do not bend the hose excessively. 5. Connector (ECT Sensor 1) - Disconnect 6. ECT Sensor 1 - Remove 7. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring. cardiagn.com
  • Page 129ECT Sensor 1 Removal and Installation 1 Torque: N·m (kgf·m, lbf·ft) cardiagn.com Replace 1. Engine Coolant - Drain 2. Connector (ECT Sensor 1) - Disconnect 3. ECT Sensor 1 - Remove 4. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring.
  • Page 130ECT Sensor 2 Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Coolant - Drain 2. ECT Sensor 2 - Remove 3. All Removed Parts - Install 1. Install the parts in the reverse order of removal.
  • Page 131ECT Sensor 2 Removal and Installation 1 Torque: N·m (kgf·m, lbf·ft) cardiagn.com Replace 1. Engine Undercover Plate - Remove 2. Engine Coolant - Drain 3. Connector (ECT Sensor 2) - Disconnect 4. ECT Sensor 2 - Remove 5. All Removed Parts - Install 1. Install the parts in the reverse order of removal
  • Page 132O-ring. cardiagn.com
  • Page 133FTP Sensor Removal and Installation Flammable - Keep Fire Away NOTE: Refer to the Fuel and Emissions Systems Service Precautions before disconnecting the fuel line. 1. FTP Senor - Remove 1. Disconnect the connector (A) and the hose (B). 2. Remove the retainer (C) and the FTP sensor (D) with the O-ri
  • Page 134Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls - Diagnostic interview Engine stalls-Diagnostic interview Date Place 1. Accessories/modifications A: No modification B: Modified 2. Situation when occurred Booming noise, vibration occurs when deceleration, stopping, engine stalls 3.
  • Page 135Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls cardiagn.com
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  • Page 140Engine stalls Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot be duplicated, you can do the troubleshooting using the on-board snapshot
  • Page 141‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. ENGINE SPEED MAF SENSOR ECT SENSOR 1 BATTERY CKP NO PULSE CKP NOISE FUEL PRESSURE CONVERTED FROM PF SENSOR FUEL PRESSURE DIRECT INJECTION SYSTEM AF FB (ST FUEL TRIM) EVAP PC DUTY MISFIRE A/C CLUTCH ‐2. Begin the snapsho
  • Page 142Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 Poor connection of MAF SENSOR If the engine stalls 1-2 seconds after MAF SENSOR shows "0" g/s the engine stall may be caused by a faulty MAF sensor, poor connection, or electrical noise in the MAF sensor signal. Pattern 2 MAF SENS
  • Page 143Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is actually cold, ECT sensor 1 signal may be stuck high. If this occurs, the PCM may not properly compensate for cold engine operation, cau
  • Page 144almost the same? cardiagn.com
  • Page 145YES ECT sensor 1 is OK. Go to step 7 (diagnosis by parameter (BATTERY)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 7. On-board snapshot check (BATTERY): NOTE: Use
  • Page 1468. On-board snapshot check (CKP NO PULSE): NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NO
  • Page 147‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NOISE and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the CKP NOISE patter
  • Page 148‐2. Select the FUEL PRESSURE CONVERTED FROM PF SENSOR, FUEL PRESSURE DIRECT INJECTION SYSTEM, and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRES
  • Page 149NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. cardiagn.com
  • Page 150‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the AF FB (ST FUEL TRIM), EVAP PC DUTY, and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then co
  • Page 151Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 3 Engine stalls when AF FB (ST FUEL TRIM) is around 0.8 When the value of AF FB (ST FUEL TRIM) is around 0.8, the PCM commands the purge control solenoid (PCS) to close (closed when EVAP PC DUTY is 0 %). If the AF FB (ST FUEL TRIM)
  • Page 152NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the A/C CLUTCH and ENGINE SPEED in the configuration
  • Page 153‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the MISFIRE and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare those snapshots to the
  • Page 154Is the fuel pressure OK? cardiagn.com
  • Page 155YES Go to step 15 (ignition system troubleshooting). NO Check for following parts:■ Fuel pump circuit Fuel pressure regulator Fuel filter 15. Spark plug visual check: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Remove the spark plugs. ‐3. Check the condition of the spark plug electrodes. NOTE:
  • Page 156‐3. Turn the vehicle to the ON mode. ‐4. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode Ignition coil 3P connector: disconnected Test point 1 Ignition coil 3P connector (female terminals) No. 1: Test point 2 Body ground Is there battery voltage? YES The ignition coil
  • Page 157cardiagn.com ‐4. Start the engine. Does the vacuum pump indicate vacuum? YES When the climate is warm, fuel vapor from the canister line to the fuel tank enters intake manifold, enriching mixture (excessively rich), causing the engine to stall in some cases. If needed, replace the EVAP canister purg
  • Page 158‐2. Test the following relays: NOTE: In situations where the failure is difficult to reproduce, the following relays may have an intermittent failure. Relay circuit board (includes PGM-FI main relay 1 circuit, ignition coil relay circuit, PGM-FI subrelay circuit) PGM-FI main relay 2 Are the relay ci
  • Page 159Injectors High pressure fuel pump ECT sensor MAF sensor/IAT sensor 1 MAP sensor/IAT sensor 2 Throttle body EVAP canister purge valve Fuel tank unit Are the terminals OK? YES Go to the diagnostic interview for engine stalls.■ NO Repair any terminal(s) as needed.■ cardiagn.com
  • Page 160Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls cardiagn.com
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  • Page 165Engine stalls Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot be duplicated, you can do the troubleshooting using the on-board snapshot
  • Page 166‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. ENGINE SPEED MAF SENSOR ECT SENSOR 1 BATTERY CKP NO PULSE CKP NOISE AF FB (ST FUEL TRIM) EVAP PC DUTY MISFIRE A/C CLUTCH (with A/C) PNP SWITCH (CVT) SLIP RATIO OF TORQ OR STARTCLUTCH (CVT) ‐2. Begin the snapshot, then s
  • Page 167Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 Poor connection of MAF SENSOR If the engine stalls 1-2 seconds after MAF SENSOR shows "0" g/s the engine stall may be caused by a faulty MAF sensor, poor connection, or electrical noise in the MAF sensor signal. Pattern 2 MAF SENS
  • Page 168Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is actually cold, ECT sensor 1 signal may be stuck high. If this occurs, the PCM may not properly compensate for cold engine operation, cau
  • Page 169almost the same? cardiagn.com
  • Page 170YES ECT sensor 1 is OK. Go to step 7 (diagnosis by parameter (BATTERY)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 7. On-board snapshot check (BATTERY): NOTE: Use
  • Page 1718. On-board snapshot check (CKP NO PULSE): NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NO
  • Page 172‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NOISE and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the CKP NOISE patter
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  • Page 174‐2. Select the AF FB (ST FUEL TRIM), EVAP PC DUTY, and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the AF FB (ST FUEL TRIM) pattern from the charts, and determine the problem. Pattern Symptom (Diagn
  • Page 175Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 4 Normal when the engine stalls with AF FB (ST FUEL When the value of AF TRIM) is around 1.0 (center value) FB (ST FUEL TRIM) is around 0.8, the PCM commands the purge control solenoid (PCS) to close (closed when EVAP PC DUTY is 0 %
  • Page 176Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 Engine stalls after MISFIRE counts go up When engine stalls after MISFIRE count increases, the engine stall may be caused by misfire. Pattern 2 Normal when engine stalls with MISFIRE count remaining If the MISFIRE count constant r
  • Page 177‐2. Select the A/C CLUTCH and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the A/C CLUTCH pattern from the charts, and determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remar
  • Page 178‐2. Select the PNP SWITCH and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the PNP SWITCH pattern from the charts, and determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remar
  • Page 179Pattern Symptom (diagnosis by parameter) Additional remarks Pattern 1 Engine stall caused by lock-up When engine stalls, SLIP RATIO OF TORQ OR STARTCLUTCH is near 100 % from deceleration to stopping, the engine stall is caused by lock-up. Pattern 2 Lock-up normal Lock-up is normal when engine stalls
  • Page 180‐2. Remove the spark plugs. ‐3. Check the condition of the spark plug electrodes. NOTE: Make sure the spark plugs are the correct part number for the vehicle. If the plugs are aftermarket or they are not the correct part number, replace all of the plugs and retest. Is the electrode damaged or wet? Y
  • Page 181Is there battery voltage? YES The ignition coil power circuit is OK. Replace the ignition coil(s).■ NO Repair an open in the IG COIL RLY OUT/IG1(IGN COIL) wire between the ignition coil relay and the ignition coil.■ 19. Engine compression check: ‐1. Do an engine compression inspection. Is the engine
  • Page 182‐6. Install the intake air duct. cardiagn.com ‐7. Start the engine. Does the vacuum gauge indicate vacuum? YES When the climate is warm, fuel vapor from the canister line to the fuel tank enters intake manifold, enriching mixture (excessively rich), causing the engine to stall in some cases. If need
  • Page 183Are the relay circuit board and the relay OK? YES Go to step 23 (power and ground terminal check). NO Replace any damaged relays.■ 23. Power and ground terminal check: ‐1. Check the corrosion and looseness at the following terminals: 12 volt battery terminals Ground cable terminals between the engin
  • Page 184Are the terminals OK? YES Go to the diagnostic interview for engine stalls.■ NO Repair any terminal(s) as needed.■ cardiagn.com
  • Page 185Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls cardiagn.com
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  • Page 191Engine stalls Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot be duplicated, you can do the troubleshooting using the on-board snapshot
  • Page 192‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. ENGINE SPEED MAF SENSOR ECT SENSOR 1 BATTERY CKP NO PULSE CKP NOISE FUEL PRESSURE CONVERTED FROM PF SENSOR FUEL PRESSURE DIRECT INJECTION SYSTEM AF FB (ST FUEL TRIM) EVAP PC DUTY MISFIRE A/C CLUTCH PNP SWITCH (CVT) SLIP
  • Page 193Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 Poor connection of MAF SENSOR If the engine stalls 1-2 seconds after MAF SENSOR shows "0" g/s the engine stall may be caused by a faulty MAF sensor, poor connection, or electrical noise in the MAF sensor signal. Pattern 2 MAF SENS
  • Page 194Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is actually cold, ECT sensor 1 signal may be stuck high. If this occurs, the PCM may not properly compensate for cold engine operation, cau
  • Page 195almost the same? cardiagn.com
  • Page 196YES ECT sensor 1 is OK. Go to step 7 (diagnosis by parameter (BATTERY)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 7. On-board snapshot check (BATTERY): NOTE: Use
  • Page 1978. On-board snapshot check (CKP NO PULSE): NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NO
  • Page 198‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the CKP NOISE and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the CKP NOISE patter
  • Page 199‐2. Select the FUEL PRESSURE CONVERTED FROM PF SENSOR, FUEL PRESSURE DIRECT INJECTION SYSTEM, and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRES
  • Page 200NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. cardiagn.com
  • Page 201‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the AF FB (ST FUEL TRIM), EVAP PC DUTY, and ENGINE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then co
  • Page 202Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 3 Engine stalls when AF FB (ST FUEL TRIM) is around 0.8 When the value of AF FB (ST FUEL TRIM) is around 0.8, the PCM commands the purge control solenoid (PCS) to close (closed when EVAP PC DUTY is 0 %). If the AF FB (ST FUEL TRIM)
  • Page 203NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the MISFIRE and ENGINE SPEED in the configuration lis
  • Page 204NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the A/C CLUTCH and ENGINE SPEED in the configuration
  • Page 205NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS. ‐2. Select the PNP SWITCH and ENGINE SPEED in the configuration
  • Page 206‐2. Select the SLIP RATIO OF TORQ OR STARTCLUTCH, ENGINE SPEED, and VEHICLE SPEED in the configuration list. Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the SLIP RATIO OF TORQ OR STARTCLUTCH pattern from the charts, and determine the prob
  • Page 207NO Check for following parts:■ Fuel pump circuit Fuel pressure regulator Fuel filter 17. Spark plug visual check: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Remove the spark plugs. ‐3. Check the condition of the spark plug electrodes. NOTE: Make sure the spark plugs are the correct part number
  • Page 208‐4. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode Ignition coil 3P connector: disconnected Test point 1 Ignition coil 3P connector (female terminals) No. 1: Test point 2 Body ground cardiagn.com
  • Page 209Is there battery voltage? YES The ignition coil power circuit is OK. Replace the ignition coil(s).■ NO Repair an open in the IG COIL RLY OUT/IG1(IGN) wire between the relay circuit board and the ignition coil.■ 20. Engine compression check: ‐1. Do an engine compression inspection. Is the engine comp
  • Page 210‐5. Start the engine. Does the vacuum pump indicate vacuum? cardiagn.com YES When the climate is warm, fuel vapor from the canister line to the fuel tank enters intake manifold, enriching mixture (excessively rich), causing the engine to stall in some cases. If needed, replace the EVAP canister purg
  • Page 211Relay circuit board (includes PGM-FI main relay 1 circuit, ignition coil relay circuit, PGM-FI subrelay circuit) PGM-FI main relay 2 Injector relay Are the relay circuit board and the relays OK? YES Go to step 24 (power and ground terminal check). NO Replace any damaged relays.■ 24. Power and ground
  • Page 212ECT sensor MAF sensor/IAT sensor 1 MAP sensor Throttle body EVAP canister purge valve Fuel tank unit Are the terminals OK? YES Go to the diagnostic interview for engine stalls.■ NO Repair any terminal(s) as needed.■ cardiagn.com
  • Page 213Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start cardiagn.com
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  • Page 219Engine will not start, engine starts but stalls immediately, or engine is hard to start Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot
  • Page 220YES Check for probable cause of the status log.■ Without keyless access system With keyless access system NO Go to step 3. 3. Problem verification (snapshot sampling): ‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. IMMOBILIZER ENGINE SPEED BATTERY ECT SENSOR 1 MAP S
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  • Page 222‐2. Select the IMMOBILIZER and ENGINE SPEED in the configuration list. Compare the snapshot parameters observed while the engine was cranking, to those in the chart below, to determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 IMMOBILIZER inhibit When IMMOBIL
  • Page 223Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 IMMOBILIZER permit Normal IMMOBILIZER is normal when IMMOBILIZER indicates “RUN” when cranking or after start. IMMOBILIZER permit Normal Which pattern is indicated? cardiagn.com Pattern 1 The immobilizer system has a failure. Go t
  • Page 224Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ENGINE SPEED when cranking is normal Pattern 2 ENGINE SPEED when cranking is low When ENGINE SPEED during cranking is low, weak 12 volt battery or cardiagn.com increased engine friction can be considered. Which pattern is indicate
  • Page 225Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 BATTERY voltage low when cranking When BATTERY voltage during cranking is too low, there is a possibility that PCM and/or engine will not start. The PCM and other system control units require 7.0 V or more to start. Pattern 2 BATT
  • Page 226Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high when cranking When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is cold (engine temp low), ECT sensor 1 may be stuck high. ECT compensation is not applied after the engine is warmed up, it
  • Page 227almost the same? cardiagn.com
  • Page 228YES ECT sensor 1 is OK. Go to step 10 (diagnosis by parameter (MAP SENSOR)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 10. On-board snapshot or snapshot check (MA
  • Page 229Pattern 2 The MAP sensor is OK. Go to step 11 (diagnosis by parameter (MAF SENSOR)). cardiagn.com
  • Page 23011. On- board snapshot or snapshot check (MAF SENSOR): NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Select the Hard to Start Engine in the on-board snapshot or the snapshot with the HDS. ‐2. Select the MAF SENS
  • Page 231Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 3 MAF SENSOR Normal When MAF SENSOR output compares with ENGINE SPEED when cranking or after starting, the MAF sensor is normal. Which pattern is indicated? Pattern 1 and 2 Check for poor connections or loose terminals at the MAF se
  • Page 232Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 CMP B NO PULSE indicates the pulse is normal It is normal when CMP B NO PULSE count does not increase, or goes up and down but does not increase continuously. Which pattern is indicated? Pattern 1 Go to the troubleshooting for DTC
  • Page 233Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 CMP B NOISE indicates the pulse is normal It is normal when CMP B NOISE count does not increase or increases but intermittently when cranking. Which pattern is indicated? Pattern 1 Go to the troubleshooting for DTC P0344. If the C
  • Page 234Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 CKP NO PULSE indicates the pulse is normal It is normal when the CKP NO PULSE count does not increase, or goes up and down but does not increase continuously. Which pattern is indicated? Pattern 1 Go to the troubleshooting for DTC
  • Page 235Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 Normal when CKP NOISE count does not go up or goes It is normal when CKP up intermittently when cranking NOISE count does not increase or increases but intermittently when cranking. Which pattern is indicated? cardiagn.com Pattern
  • Page 236YES Go to step 18. NO Check the following parts:■ Fuel pump circuit Fuel pressure regulator Fuel filter 18. Spark plug visual check: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Remove the spark plugs. ‐3. Check the condition of the spark plug electrodes. NOTE: Make sure the spark plugs are the
  • Page 237‐3. Turn the vehicle to the ON mode. ‐4. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode Ignition coil 3P connector (problem cylinder): disconnected Test point 1 Ignition coil 3P connector No. 1 Test point 2 Body ground Is there battery voltage? YES The ignition coil
  • Page 238‐6. Install the intake air duct. cardiagn.com ‐7. Start the engine. Does the vacuum gauge indicate vacuum? YES Replace the EVAP canister purge valve.■ NO (Reproducible failure) Go to step 23 (fuse check). NO (Intermittent failure) Go to step 24 (relay check). 23. Fuse check: ‐1. Check the following
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  • Page 240YES Go to step 25 (power and ground terminal check). NO Replace any damaged relays.■ 25. Power and ground terminal check: ‐1. Check the corrosion and looseness at the following terminals: 12 volt battery terminals Ground cable terminals between the engine and the body ground, and the transmission an
  • Page 241Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start cardiagn.com
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  • Page 247Engine will not start, engine starts but stalls immediately, or engine is hard to start Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot
  • Page 248YES Check for probable cause of the status log.■ Without keyless access system With keyless access system NO Go to step 3. 3. Problem verification (snapshot sampling): ‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. IMMOBILIZER ENGINE SPEED BATTERY ECT SENSOR 1 MAP S
  • Page 249‐2. Select the IMMOBILIZER and ENGINE SPEED in the configuration list. Compare the snapshot parameters observed while the engine was cranking, to those in the chart below, to determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 IMMOBILIZER inhibit When IMMOBIL
  • Page 250Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 IMMOBILIZER permit Normal IMMOBILIZER is normal when IMMOBILIZER indicates “RUN” when cranking or after start. IMMOBILIZER permit Normal Which pattern is indicated? cardiagn.com Pattern 1 The immobilizer system has a failure. Go t
  • Page 251Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ENGINE SPEED when cranking is normal Pattern 2 ENGINE SPEED when cranking is low When ENGINE SPEED during cranking is low, weak 12 volt battery or cardiagn.com increased engine friction can be considered. Which pattern is indicate
  • Page 252Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 BATTERY voltage low when cranking When BATTERY voltage during cranking is too low, there is a possibility that PCM and/or engine will not start. The PCM and other system control units require 7.0 V or more to start. Pattern 2 BATT
  • Page 253Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high when cranking When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is cold (engine temp low), ECT sensor 1 may be stuck high. ECT compensation is not applied after the engine is warmed up, it
  • Page 254almost the same? cardiagn.com
  • Page 255YES ECT sensor 1 is OK. Go to step 10 (diagnosis by parameter (MAP SENSOR)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 10. On-board snapshot or snapshot check (MA
  • Page 256Pattern 2 The MAP sensor is OK. Go to step 11 (diagnosis by parameter (MAF SENSOR)). cardiagn.com
  • Page 25711. On- board snapshot or snapshot check (MAF SENSOR): NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure. ‐1. Select the Hard to Start Engine in the on-board snapshot or the snapshot with the HDS. ‐2. Select the MAF SENS
  • Page 258Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 3 MAF SENSOR Normal When MAF SENSOR output compares with ENGINE SPEED when cranking or after starting, the MAF sensor is normal. Which pattern is indicated? Pattern 1 and 2 Check for poor connections or loose terminals at MAF sensor
  • Page 259Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 The FUEL PRESSURE CONVERTED FROM PF If the FUEL SENSOR is low (almost 0 kPa) when cranking PRESSURE CONVERTED FROM PF SENSOR is almost 0 kPa when cranking, a failure may exist in the fuel supply system. Fuel leak, out of fuel Fuel
  • Page 260NO PULSE pattern from the chart, and determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CMP B NO PULSE count increases continuously when When CMP B NO cranking PULSE count increases continuously when cranking, no CMP pulse is received. If the CMP pulse is no
  • Page 261Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CMP B NOISE count increases continuously when When CMP B NOISE cranking count increases continuously when cranking, there is noise in the CMP signal. When CMP signal has noise, the PCM cannot detect the cylinder to be ignited and
  • Page 262Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CKP NO PULSE counts go up continuously when When the CKP NO cranking PULSE count increases continuously when cranking, the PCM is not receiving the correct CKP pulse. Pattern 2 CKP NO PULSE indicates the pulse is normal It is norm
  • Page 263Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CKP NOISE count goes up continuously when cranking When the CKP NOISE count increases continuously when cranking, the PCM is not receiving the correct CKP pulse. Pattern 2 Normal when CKP NOISE count does not go up or goes It is n
  • Page 264‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Remove the spark plugs. ‐3. Check the condition of the spark plug electrodes. NOTE: Make sure the spark plugs are the correct part number for the vehicle. If the plugs are aftermarket or they are not the correct part number, replace all of the plugs a
  • Page 265Is there battery voltage? YES The ignition coil power circuit is OK. Replace the ignition coil(s).■ NO Repair an open in the IG COIL RLY OUT/IG1(IGN) wire between the ignition coil relay and the ignition coil.■ 21. Engine compression check: ‐1. Do an engine compression inspection. Is engine compress
  • Page 266‐5. Start the engine. Does the vacuum pump indicate vacuum? cardiagn.com YES Replace the EVAP canister purge valve.■ NO (Reproducible failure) Go to step 23 (fuse check). NO (Intermittent failure) Go to step 24 (relay check). 23. Fuse check: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Check the
  • Page 267Are the relay circuit board and the relays OK? YES Go to step 25 (power and ground terminal check). NO Replace any damaged relays.■ 25. Power and ground terminal check: ‐1. Check the corrosion and looseness at the following terminals: 12 volt battery terminals Ground cable terminals between the engi
  • Page 268Fuel tank unit Are the terminals OK? YES Go to the diagnostic interview for hard to start engine.■ NO Repair any terminal(s) as needed.■ cardiagn.com
  • Page 269Fuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start cardiagn.com
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  • Page 275Engine will not start, engine starts but stalls immediately, or engine is hard to start Special Tools Required Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available NOTE: Before beginning this troubleshooting, do a customer diagnostic interview. - When the symptom cannot
  • Page 276‐1. Set the HDS to record a SNAPSHOT of following full data list for 30 seconds. IMMOBILIZER ENGINE SPEED BATTERY ECT SENSOR 1 MAP SENSOR (HI RES) MAF SENSOR FUEL PRESSURE CONVERTED FROM PF SENSOR FUEL PRESSURE DIRECT INJECTION SYSTEM CMP B NO PULSE CMP B NOISE CKP NO PULSE CKP NOISE VTEC PRES SW ‐2
  • Page 277Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 IMMOBILIZER inhibit When IMMOBILIZER indicates “BAN” during cranking or after start, the fuel pump is stopped by IMMOBILIZER inhibit. No failure in the engine IMMOBILIZER inhibit cardiagn.com
  • Page 278Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 IMMOBILIZER permit Normal IMMOBILIZER is normal when IMMOBILIZER indicates “RUN” when cranking or after start. IMMOBILIZER permit Normal Which pattern is indicated? cardiagn.com Pattern 1 The immobilizer system has a failure. Go t
  • Page 279Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ENGINE SPEED when cranking is normal Pattern 2 ENGINE SPEED when cranking is low When ENGINE SPEED during cranking is low, weak 12 volt battery or cardiagn.com increased engine friction can be considered. Which pattern is indicate
  • Page 280Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 BATTERY voltage low when cranking When BATTERY voltage during cranking is too low, there is a possibility that PCM and/or engine will not start. The PCM and other system control units require 7.0 V or more to start. Pattern 2 BATT
  • Page 281Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 ECT SENSOR 1 high when cranking When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is cold (engine temp low), ECT sensor 1 may be stuck high. ECT compensation is not applied after the engine is warmed up, it
  • Page 282almost the same? cardiagn.com
  • Page 283YES ECT sensor 1 is OK. Go to step 10 (diagnosis by parameter (MAF SENSOR)). NO If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.■ 10. On-board snapshot or snapshot check (MA
  • Page 284Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 3 MAF SENSOR Normal When MAF SENSOR output compares with ENGINE SPEED when cranking or after starting, the MAF sensor is normal. Which pattern is indicated? Pattern 1 and 2 Check for loose terminals or a poor connection at the MAF s
  • Page 285Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 2 Normal when MAP sensor detects vacuum when cranking When MAP sensor detects vacuum while cranking, the condition is normal and the MAP sensor pressure port is clear. Which pattern is indicated? Pattern 1 Check the pressure measure
  • Page 286Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 The FUEL PRESSURE CONVERTED FROM PF If the FUEL SENSOR is low (almost 0 kPa) when cranking PRESSURE CONVERTED FROM PF SENSOR is almost 0 kPa when cranking, a failure may exist in the fuel supply system. Fuel leak, out of fuel Fuel
  • Page 287NO PULSE pattern from the chart, and determine the problem. Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CMP B NO PULSE count increases continuously when When CMP B NO cranking PULSE count increases continuously when cranking, no CMP pulse is received. If the CMP pulse is no
  • Page 288Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CMP B NOISE count increases continuously when When CMP B NOISE cranking count increases continuously when cranking, there is noise in the CMP signal. When CMP signal has noise, the PCM cannot detect the cylinder to be ignited and
  • Page 289Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CKP NO PULSE counts go up continuously when When the CKP NO cranking PULSE count increases continuously when cranking, the PCM is not receiving the correct CKP pulse. Pattern 2 The CKP NO PULSE indicates the pulse is normal It is
  • Page 290Pattern Symptom (Diagnosis by parameter) Additional remarks Pattern 1 CKP NOISE count goes up continuously when cranking When the CKP NOISE count increases continuously when cranking, the PCM is not receiving the correct CKP pulse. Pattern 2 Normal when CKP NOISE count does not go up or goes It is n
  • Page 29118. Fuel pressure check (low pressure side): ‐1. Do the fuel pressure test. Is the fuel pressure OK? YES Go to step 19 (ignition system troubleshooting). NO Check the following parts:■ Fuel pump circuit Fuel pressure regulator Fuel filter 19. Spark plug visual check: ‐1. Turn the vehicle to the OFF
  • Page 292‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Disconnect the following connector(s). Ignition coil(s) 3P connector from the problem cylinder ‐3. Turn the vehicle to the ON mode. ‐4. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode Ignition coil 3P connector: disconn
  • Page 293cardiagn.com ‐4. Start the engine. Does the vacuum pump indicate vacuum? YES When the climate is warm, fuel vapor from the canister line to the fuel tank enters intake manifold, enriching mixture (excessively rich), causing the engine to stall in some cases. If needed, replace the EVAP canister purg
  • Page 294‐2. Test the following relays: NOTE: In situations where the failure is difficult to reproduce, the following relays may have an intermittent failure. Relay circuit board (includes PGM-FI main relay 1 circuit, ignition coil relay circuit, PGM-FI subrelay circuit) PGM-FI main relay 2 Are the relay ci
  • Page 295Injectors High pressure fuel pump ECT sensor MAF sensor/IAT sensor 1 MAP sensor/IAT sensor 2 Throttle body EVAP canister purge valve Fuel tank unit Are the terminals OK? YES Go to the diagnostic interview for hard to start engine.■ NO Repair any terminal(s) as needed.■ cardiagn.com
  • Page 296Fuel and Emissions Systems Symptom Troubleshooting - Hard to start engine - Diagnostic interview Hard to start engine-Diagnostic interview Date Place How often does it occur? ( ) times/day 1. Weather when occurred A: Warm (temp: ) B: Sunny C: Cloudy D: Rainy 2. Situation when occurred A: After an ov
  • Page 297Pattern 4 Use of non-specified fuel When ethanol fuel or fuel other than specified is mixed, engine stalling may occur. Ethanol mixed, use of additive Poor fuel quality may cause a hard-to-start condition. Pattern 5 Immediately crank after turning the vehicle to There may be a delay until the fuel p
  • Page 298IAT Sensor 2 Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. IAT Sensor 2 - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring.
  • Page 299Impact Sensor Removal and Installation SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service. NOTE: How to read the torque specifications. Front Impact Sensor 1. 12 Volt Battery Terminal - Disconnect NOTE: Wait
  • Page 3005. SRS Operation - Confirm 1. Do the 12 volt battery terminal reconnection procedure, turn the vehicle to the ON mode, and check that the SRS indicator comes on for about 6 seconds and then goes off. Side Impact Sensor (First) 1. 12 Volt Battery Terminal - Disconnect NOTE: Wait at least 3 minutes be
  • Page 3014/5-Door 5. All Removed Parts - Install cardiagn.com 1. Install all of the removed parts in reverse order. NOTE: During installation, install the new bolt to the specified torque. Before installing the front door sill trim (2-door) or the B-pillar lower trim (4/5-door), make sure the SRS indicator w
  • Page 3022-Door 1. Disconnect the connector (A). 2. Remove the bolt (B), then remove the side impact sensor (second) (C). cardiagn.com 4/5-Door 5. All Removed Parts - Install 1. Install all of the removed parts in reverse order. NOTE: During installation, install the new bolt to the specified torque. Before
  • Page 303cardiagn.co
  • Page 3046. SRS Operation - Confirm 1. Do the 12 volt battery terminal reconnection procedure, turn the vehicle to the ON mode, and check that the SRS indicator comes on for about 6 seconds and then goes off. cardiagn.com
  • Page 305Improvement Control in Practical Use Fuel Consumption System Description - Effective Control Outline The control system for improved fuel economy in actual traffic aims at disseminating eco-driving. It consists of an effective control system. The effective control system is activated by operating th
  • Page 306Knock Sensor Removal and Installation NOTE: Where icon is shown, click for further information. 1 cardiagn.com Detailed information, notes and precautions Torque: N·m (kgf·m, lbf·ft) 1. Engine Undercover Plate - Remove 2. Knock Sensor - Remove
  • Page 307Note for installation Make sure the direction of the sensor connector as shown. 3. All Removed Parts - Install 1. Install the parts in the reverse order of removal. cardiagn.com
  • Page 308Knock Sensor Removal and Installation 1 Torque: N·m (kgf·m, lbf·ft) cardiagn.com 1. Engine Undercover Plate - Remove 2. Knock Sensor - Remove 3. All Removed Parts - Install
  • Page 3091. Install the parts in the reverse order of removal. NOTE: Make sure the direction of the sensor connector as shown. cardiagn.com
  • Page 310Knock Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) 1. Engine Undercover Plate - Remove 2. Knock Sensor - Remove 3. All Removed Parts - Install
  • Page 3111. Install the parts in the reverse order of removal. NOTE: Make sure the direction of the sensor connector as shown. cardiagn.com
  • Page 312MAF Sensor/IAT Sensor 1 Removal and Installation 1 Except Si cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 2 Si
  • Page 313cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. MAF Sensor/IAT Sensor 1 - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal.
  • Page 314MAF Sensor/IAT Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. MAF Sensor/IAT Sensor 1 - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal. 3. PCM - Fuel Learn (When Replacing)
  • Page 315MAF Sensor/IAT Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. MAF Sensor/IAT Sensor - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring.
  • Page 316MAP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. MAP Sensor - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring.
  • Page 317MAP Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. MAP Sensor - Remove 2. All Removed Parts - Install 1. Install the parts in the reverse order of removal with a new O-ring.
  • Page 318MAP Sensor/IAT Sensor Removal and Installation 1 cardiagn.com Torque: N·m (kgf·m, lbf·ft) Replace 1. Engine Cover - Remove 2. MAP Sensor/IAT Sensor 2 - Remove 3. All Removed Parts - Install 1. Install the parts in the reverse order of removal.
  • Page 319PCM Connector for Inputs and Outputs PCM Connector for Inputs and Outputs Connector Index PCM Connector No. 1 (96P) PCM Connector No. 2 (58P) PCM Connector No. 1 (96P) (female terminals) cardiagn.com Terminal Terminal name Description number 1 VTCEX (VTC OIL CONTROL SOLENOID VALVE B) Drives VTC oil
  • Page 320Terminal Terminal name Description number 13 INJ L4 (No. 4 INJECTOR -) Drives No. 4 injector 14 INJ L3 (No. 3 INJECTOR -) Drives No. 3 injector 15 INJ H3 (No. 3 INJECTOR +) Drives No. 3 injector 16 AFHT (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) HEATER CONTROL) Drives A/F sensor (Sensor 1) heater 17 IN
  • Page 321Terminal Terminal name Description number 57 CAMEX (CAMSHAFT POSITION (CMP) SENSOR B) Detects CMP sensor B signal 58 SG2 (SENSOR GROUND) Sensor ground 59 IGN01 (No. 1 IGNITION COIL PULSE) Drives No. 1 ignition coil 60 IGN02 (No. 2 IGNITION COIL PULSE) Drives No. 2 ignition coil 61 VCC THL (SENSOR VO
  • Page 322cardiagn.com Terminal Terminal name Description number 1 GND (POWER GROUND) Ground for PCM 2 FI MAIN RLY OUT (POWER SOURCE) Power source for PCM 3 GND (POWER GROUND) Ground for PCM 4 FI MAIN RLY OUT (POWER SOURCE) Power source for PCM 5 GND (POWER GROUND) Ground for PCM 6 FI MAIN RLY OUT (POWER SOUR
  • Page 323Terminal Terminal name Description number 21 Not used 22 CLUTCH SW(SA) (CLUTCH PEDAL POSITION SWITCH A SIGNAL) Detects clutch pedal position switch A signal 23 Not used 24 VSP (VEHICLE SPEED SIGNAL OUTPUT) Sends vehicle speed signal 25 Not used 26 FI MAIN RLY CL- (PGM-FI MAIN RELAY 1) Drives PGM-FI
  • Page 324PCM Connector for Inputs and Outputs PCM Connector for Inputs and Outputs Connector Index PCM Connector A (50P) PCM Connector E (80P) PCM Inputs and Outputs at PCM Connector A (50P) cardiagn.com Terminal Terminal name Description number 1 Not used 2 Not used 3 Not used 4 SO2HT (SECONDARY HEATED OXYG
  • Page 325Terminal Terminal name Description number 13 FI ECU GND (GROUND) Ground for PCM 14 Not used 15*2 ST CUT RLY1 CL- (STARTER CUT RELAY 1) Drives starter cut relay 1 16 FI SUB RLY OUT (POWER SOURCE) Power source for PCM 17 FAN CONTROL (RFC UNIT CONTROL) Drives RFC unit 18 Not used 19*2 ST RLY 1 TO 2 (ST
  • Page 326cardiagn.com Terminal Terminal name Description number 1 Not used 2 Not used 3 Not used 4 Not used 5 Not used 6 Not used 7 Not used 8 Not used 9 Not used 10 Not used 11 Not used 12 Not used 13 AFHT (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) HEATER CONTROL) Drives A/F sensor (Sensor 1) heater 14 Not use
  • Page 327Terminal Terminal name Description number 17 Not used 18 INJ1 (No. 1 INJECTOR) Drives No. 1 injector 19 INJ4 (No. 4 INJECTOR) Drives No. 4 injector 20 INJ3 (No. 3 INJECTOR) Drives No. 3 injector 21 INJ2 (No. 2 INJECTOR) Drives No. 2 injector 22 PG (GROUND) Ground for PCM 23 PG(COIL) (GROUND) Ground
  • Page 328Terminal Terminal name Description number 64 VTC IN (VTC OIL CONTROL SOLENOID VALVE A) Drives VTC oil control solenoid valve A 65 VTS (ROCKER ARM OIL CONTROL SOLENOID) Drives rocker arm oil control solenoid 66*1 NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR) Detects output shaft (countershaft) speed
  • Page 329PCM Connector for Inputs and Outputs PCM Connector for Inputs and Outputs Connector Index PCM Connector A (50P) PCM Connector E (80P) PCM Inputs and Outputs at PCM Connector A (50P) (female terminals) cardiagn.com Terminal Terminal name Description number 1 INJ RLY OUT (INJECTOR POWER SOURCE) Power
  • Page 330Terminal Terminal name Description number 16 FI SUB RLY OUT (POWER SOURCE) Power source for PCM 17 FAN CONTROL (RFC UNIT CONTROL) Drives RFC unit 18 Not used 19 ST RLY 1 TO 2 (STARTER CUT RELAY RETURN SIGNAL) Detects starter cut relay signal 20*5 TM-CAN_L (TM-CAN COMMUNICATION SIGNAL LOW) Sends and
  • Page 331cardiagn.com Terminal Terminal name Description number 1 HPUMP H (HIGH PRESSURE FUEL PUMP +) Drives fuel control solenoid (built into high pressure fuel pump) 2 INJH4 (No. 4 INJECTOR +) Drives No. 4 injector 3 INJL1 (No. 1 INJECTOR -) Drives No. 1 injector 4 INJL3 (No. 3 INJECTOR -) Drives No. 3 inj
  • Page 332Terminal Terminal name Description number 24 GND2 (GROUND) Ground for PCM 25 WGMTR2(-) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) Drives turbocharger wastegate control actuator 26 WGMTR1(+) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SIDE) Drives turbocharger wastegate control actuator 27 MTR1
  • Page 333Terminal Terminal name Description number 69 Not used 70 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage 71 SG1 (SENSOR GROUND) Sensor ground 72 PF (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal 73 VS (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) VS CELL) Detects A/F sensor (
  • Page 334PCM Connector for Inputs and Outputs PCM Connector for Inputs and Outputs Connector Index PCM Connector A (50P) PCM Connector E (80P) PCM Inputs and Outputs at PCM Connector A (50P) (female terminals) cardiagn.com Terminal Terminal name Description number 1 INJ RLY OUT (INJECTOR POWER SOURCE) Power
  • Page 335Terminal Terminal name Description number 16 FI SUB RLY OUT (POWER SOURCE) Power source for PCM 17 FAN CONTROL (RFC UNIT CONTROL) Drives RFC unit 18 Not used 19 ST RLY 1 TO 2 (STARTER CUT RELAY RETURN SIGNAL) Detects starter cut relay signal 20*2 TM-CAN_L (TM-CAN COMMUNICATION SIGNAL LOW) Sends and
  • Page 336cardiagn.com Terminal Terminal name Description number 1 HPUMP H (HIGH PRESSURE FUEL PUMP +) Drives fuel control solenoid (built into high pressure fuel pump) 2 INJH4 (No. 4 INJECTOR +) Drives No. 4 injector 3 INJL1 (No. 1 INJECTOR -) Drives No. 1 injector 4 INJL3 (No. 3 INJECTOR -) Drives No. 3 inj
  • Page 337Terminal Terminal name Description number 24 GND2 (GROUND) Ground for PCM 25 WGMTR2(-) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) Drives turbocharger wastegate control actuator 26 WGMTR1(+) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SIDE) Drives turbocharger wastegate control actuator 27 MTR1
  • Page 338Terminal Terminal name Description number 69 Not used 70 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage 71 SG1 (SENSOR GROUND) Sensor ground 72 PF (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal 73 VS (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) VS CELL) Detects A/F sensor (
  • Page 339PCM Connector for Inputs and Outputs PCM Connector for Inputs and Outputs Connector Index PCM Connector A (50P) PCM Connector E (80P) PCM Connector A (50P) (female terminals) cardiagn.com Terminal Terminal name Description number 1 INJ RLY OUT (INJECTOR POWER SOURCE) Power source for PCM (injector d
  • Page 340Terminal Terminal name Description number 16 FI SUB RLY OUT (POWER SOURCE) Power source for PCM 17 FAN CONTROL (RFC UNIT CONTROL) Drives RFC unit 18 Not used 19 ST RLY 1 TO 2 (STARTER CUT RELAY RETURN SIGNAL) Detects starter cut relay signal 20 Not used 21 CLUTCH SW(SA) (CLUTCH PEDAL POSITION SWITCH
  • Page 341cardiagn.com Terminal Terminal name Description number 1 HPUMP H (HIGH PRESSURE FUEL PUMP +) Drives fuel control solenoid (built into high pressure fuel pump) 2 INJH4 (No. 4 INJECTOR +) Drives No. 4 injector 3 INJL1 (No. 1 INJECTOR -) Drives No. 1 injector 4 INJL3 (No. 3 INJECTOR -) Drives No. 3 inj
  • Page 342Terminal Terminal name Description number 24 GND2 (GROUND) Ground for PCM 25 WGMTR2(-) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR - SIDE) Drives turbocharger wastegate control actuator 26 WGMTR1(+) (TURBOCHARGER WASTEGATE CONTROL ACTUATOR + SIDE) Drives turbocharger wastegate control actuator 27 MTR1
  • Page 343Terminal Terminal name Description number 70 VCC1 (SENSOR VOLTAGE) Provides sensor reference voltage 71 SG1 (SENSOR GROUND) Sensor ground 72 PF (FUEL RAIL PRESSURE SENSOR) Detects fuel rail pressure sensor signal 73 VS (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) VS CELL) Detects A/F sensor (Sensor 1) VS
  • Page 344PCM Idle Learn Procedure The idle learn procedure must be done so the PCM can learn the engine idle characteristics. Do the idle learn procedure whenever you do any of these actions: Replace the PCM. Reset the PCM. Update the PCM. Replace or clean the throttle body. When the engine or transmission i
  • Page 345PCM Power and Ground Circuit Troubleshooting cardiagn.com
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  • Page 348PCM Power and Ground Circuit Troubleshooting 1. Engine starting check: ‐1. Try to start the engine. Does the engine start and idle smoothly? YES Go to the F-CAN circuit troubleshooting.■ NO Go to step 2. 2. Fuse check 1: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Check the following fuse. Fuse
  • Page 349PCM connector No. 2 (58P): disconnected Test point 1 PCM connector No. 2 (58P) No. 50 Test point 2 Body ground Is there continuity? YES Repair a short in the +B BACKUP FI-ECU wire between PCM connector No. 2 terminal No. 50 and the No. A12 (10 A) fuse in the under-hood fuse/relay box. Also replace t
  • Page 350‐1. Disconnect each of the parts or connectors below, one at a time, then check for continuity between test points 1 and 2. PGM-FI main relay 2 PCM connector No. 2 (58P) Test condition Vehicle OFF (LOCK) mode Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connec
  • Page 351YES Repair a short in the FI MAIN RLY OUT wire between the relay circuit board and each part. Also replace the No. A7 (20 A) fuse in the under-hood fuse/relay box.■ NO The FI MAIN RLY OUT wire is OK. Replace the relay circuit board. Also replace the No. A7 (20 A) fuse in the under-hood fuse/relay bo
  • Page 352‐1. Disconnect the following connector. Under-dash fuse/relay box connector C (27P) ‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector No. 2 (58P): disconnected PGM-FI main relay 2: disconnected Under-dash fuse/relay box connector C (27P): disc
  • Page 353YES Repair a short in the FUEL PUMP RLY OUT wire between PGM-FI main relay 2 and the fuel tank unit. Also replace the No. B8 (20 A) fuse in the under-dash fuse/relay box.■ NO The FUEL PUMP RLY OUT wire is OK. Check the fuel pump, and replace it if needed. Also replace the No. B8 (20 A) fuse in the u
  • Page 354PCM connector No. 2 (58P): disconnected PGM-FI main relay 2: disconnected Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector C (18P) (female terminals) No. 18: Test point 2 Body ground Is there battery voltage? YES Go to step 17. NO Repair an open in the +
  • Page 355PGM-FI main relay 2: disconnected Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector C (18P) (female terminals) No. 17: Test point 2 PCM connector No. 2 (58P) No. 2, No. 4, and No. 6 Is there continuity? YES The FI MAIN RLY OUT wire is OK. Go to step 19. N
  • Page 356PCM Power and Ground Circuit Troubleshooting cardiagn.com
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  • Page 359PCM Power and Ground Circuit Troubleshooting 1. Engine starting check: ‐1. Try to start the engine. Does the engine start and idle smoothly? YES (without multipurpose camera unit) Go to the F-CAN circuit troubleshooting.■ YES (with multipurpose camera unit) Go to the troubleshooting for CAN gateway
  • Page 360PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 7 Test point 2 Body ground Is there continuity? YES Repair a short in the +B BACKUP FI-ECU wire between the PCM (A7) and the No. A12 (10 A) fuse in the under-hood fuse/relay box.■ NO Go to step 5. 5. Fuse check 2: ‐1. Check t
  • Page 361‐1. Disconnect each of the parts or connectors below, one at a time, then check for continuity between test points 1 and 2. PCM connector A (50P) PGM-FI main relay 2 Each injector 2P connector Test condition Vehicle OFF (LOCK) mode Relay circuit board connector C (18P): disconnected Test point 1 Rel
  • Page 362Is there continuity? YES Repair a short in the FI MAIN RLY OUT wire between the relay circuit board and each part. Also replace the No. A7 (15 A) fuse in the under-hood fuse/relay box.■ NO The FI MAIN RLY OUT wire is OK. Replace the relay circuit board. Also replace the No. A7 (15 A) fuse in the und
  • Page 363Is there continuity? YES Go to step 12. NO Go to step 13. 12. Shorted wire check (IG1 FUEL PUMP line): ‐1. Disconnect the following connector. cardiagn.com Under-dash fuse/relay box connector C (27P) ‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM con
  • Page 364‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected PGM-FI main relay 2: disconnected Fuel tank unit 4P connector: disconnected Test point 1 Fuel tank unit 4P connector No. 1 Test point 2 Body ground Is there continuity? ca
  • Page 365YES The IG1 FUEL PUMP wire is OK. Go to step 15. NO Repair an open in the IG1 FUEL PUMP wire between the No. B8 (15 A) fuse in the under-dash fuse/relay box and PGM-FI main relay 2.■ 15. Fuse check 4: ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Check the following fuse. Fuse No. B11 (5 A) Locat
  • Page 36618. Determine possible failure area (PGM-FI main relay 1 control circuit, others): ‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Measure the voltage between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected PGM-FI main relay 2: disconnected PCM connec
  • Page 367Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector C (18P) No. 5 Test point 2 PCM connector A (50P) No. 5 Is there continuity? YES The FI MAIN RLY CL- wire is OK. Remove and test the relay circuit board. If the relay circuit board is OK, check for any auth
  • Page 368YES The FI MAIN RLY OUT wire is OK. Go to step 22. NO Repair an open in the FI MAIN RLY OUT wire between the PCM (A8) and the relay circuit board.■ 22. Relay circuit board check: ‐1. Remove and test the relay circuit board. Is the relay circuit board OK? YES The relay circuit board is OK. Go to step
  • Page 369PCM Power and Ground Circuit Troubleshooting cardiagn.com
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  • Page 372PCM Power and Ground Circuit Troubleshooting 1. Engine starting check: ‐1. Try to start the engine. Does the engine start and idle smoothly? YES (without multipurpose camera unit) Go to the F-CAN circuit troubleshooting.■ YES (with multipurpose camera unit) Go to the troubleshooting for CAN gateway
  • Page 373‐4. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 7 Test point 2 Body ground Is there continuity? YES Repair a short in the +B BACKUP FI-ECU wire between the PCM (A7) and the No. A12
  • Page 374Is there continuity? YES Repair a short in the +B IGP wire between the No. A7 (15 A) fuse and the relay circuit board or the No. 7 (15 A) fuse and the injector relay. If the wire is OK, replace the under-hood fuse/relay box. Also replace the No. A7 (15 A) fuse.■ NO Go to step 7. 7. Part(s) internal
  • Page 375‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode Relay circuit board connector C (18P): disconnected PGM-FI main relay 2: disconnected Injector relay: disconnected PCM connector A (50P): disconnected Test point 1 Relay circuit board connector C (18P) No. 1
  • Page 376Test point 1 PGM-FI main relay 2 4P socket No. 1 Test point 2 Body ground Is there continuity? YES Go to step 12. NO Go to step 13. 12. Shorted wire check (IG1 FUEL PUMP line): ‐1. Disconnect the following connector. cardiagn.com Under-dash fuse/relay box connector C (27P) ‐2. Check for continuity b
  • Page 377‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PGM-FI main relay 2: disconnected PCM connector A (50P): disconnected Fuel tank unit 4P connector: disconnected Test point 1 Fuel tank unit 4P connector No. 1 Test point 2 Body ground Is there continuity? YE
  • Page 378‐1. Turn the vehicle to the OFF (LOCK) mode. ‐2. Check the following fuse. Fuse No. B11 (5 A) Location Under-dash fuse/relay box Is the fuse OK? YES Go to step 17. NO Go to step 16. 16. Shorted wire check (IG1(MONI)/IG1 MON line): ‐1. Disconnect the following connector. PCM connector E (80P) ‐2. Che
  • Page 379‐2. Measure the voltage between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected PCM connector E (80P): disconnected Test point 1 PCM connector A (50P) No. 5 Test point 2 Body ground Is there battery voltage? YES Go to step 21. NO Go to step 19. 19. Ope
  • Page 380Is there continuity? YES The FI MAIN RLY CL- wire is OK. Remove and test the relay circuit board. If the relay circuit board is OK, check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If the symptom/indic
  • Page 381‐1. Check for continuity between the following test points and body ground individually. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected PCM connector E (80P): disconnected Relay circuit board: removed Connector Terminal PCM connector A (50P) No. 13 PCM connector E (80P) N
  • Page 382PCM Power and Ground Circuit Troubleshooting cardiagn.com
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  • Page 385PCM Power and Ground Circuit Troubleshooting 1. Engine starting check: ‐1. Try to start the engine. Does the engine start and idle smoothly? YES (without multipurpose camera unit) Go to the F-CAN circuit troubleshooting.■ YES (with multipurpose camera unit) Go to the troubleshooting for CAN gateway
  • Page 386‐4. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 7 Test point 2 Body ground Is there continuity? YES Repair a short in the +B BACKUP FI-ECU wire between the PCM (A7) and the No. A12
  • Page 387‐1. Disconnect each of the parts or connectors below, one at a time, then check for continuity between test points 1 and 2. PGM-FI main relay 2 PCM connector A (50P) Test condition Vehicle OFF (LOCK) mode Relay circuit board connector C (18P): disconnected Injector relay: disconnected Test point 1 R
  • Page 388Is there continuity? YES Repair a short in the FI MAIN RLY OUT wire between the relay circuit board and each part. Also replace the No. A7 (15 A) fuse in the under-hood fuse/relay box.■ NO The FI MAIN RLY OUT wire is OK. Replace the relay circuit board. Also replace the No. A7 (15 A) fuse in the und
  • Page 38912. Shorted wire check (IG1 FUEL PUMP line): ‐1. Disconnect the following connector. Under-dash fuse/relay box connector C (27P) ‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PGM-FI main relay 2: disconnected Under-dash fuse/relay box connector C (27P):
  • Page 390YES Repair a short in the FUEL PUMP RLY OUT wire between PGM-FI main relay 2 and the fuel tank unit. Also replace the No. B8 (15 A) fuse in the under-dash fuse/relay box.■ NO The FUEL PUMP RLY OUT wire is OK. Check the fuel pump, and replace it if needed. Also replace the No. B8 (15 A) fuse in the u
  • Page 391Test point 1 PCM connector E (80P) No. 36 Test point 2 Body ground Is there continuity? YES Repair a short in the IG1(MONI)/IG1 MON wire between the PCM (E36) and the No. B11 (5 A) fuse in the under-dash fuse/relay box. Also replace the No. B11 (5 A) fuse.■ NO The IG1(MONI)/IG1 MON wire is not short
  • Page 392PCM connector A (50P): disconnected PCM connector E (80P): disconnected PGM-FI main relay 2: disconnected Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector C (18P) (female terminals) No. 18: Test point 2 Body ground Is there battery voltage? YES Go to ste
  • Page 393‐1. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected PCM connector E (80P): disconnected PGM-FI main relay 2: disconnected Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector C (18P
  • Page 394YES The FI ECU GND, INJ GND1, INJ GND2, GND2, GND3, and GND4 wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If the symptom/indication goes away and the PCM was substituted, replace the
  • Page 395PCM Power and Ground Circuit Troubleshooting cardiagn.com
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  • Page 398PCM Power and Ground Circuit Troubleshooting 1. Engine starting check: ‐1. Try to start the engine. Does the engine start and idle smoothly? YES (without multipurpose camera unit) Go to the F-CAN circuit troubleshooting.■ YES (with multipurpose camera unit) Go to the troubleshooting for CAN gateway
  • Page 399‐4. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 7 Test point 2 Body ground Is there continuity? YES Repair a short in the +B BACKUP FI-ECU wire between the PCM (A7) and the No. A12
  • Page 400‐1. Disconnect each of the parts or connectors below, one at a time, then check for continuity between test points 1 and 2. PGM-FI main relay 2 PCM connector A (50P) Test condition Vehicle OFF (LOCK) mode Relay circuit board connector C (18P): disconnected Test point 1 Relay circuit board connector
  • Page 401YES Repair a short in the FI MAIN RLY OUT wire between the relay circuit board and each part. Also replace the No. A7 fuse.■ NO The FI MAIN RLY OUT wire is OK. Replace the relay circuit board. Also replace the No. A7 fuse.■ 9. Fuse check 3: ‐1. Check the following fuse. Fuse No. B8 Is the fuse OK? Y
  • Page 402‐2. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PGM-FI main relay 2: disconnected Under-dash fuse/relay box connector C (27P): disconnected PCM connector A (50P): disconnected Test point 1 PGM-FI main relay 2 4P socket (female terminals) No. 1: Test point
  • Page 403‐2. Turn the vehicle to the ON mode. ‐3. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode PCM connector A (50P): disconnected PGM-FI main relay 2: disconnected Test point 1 PGM-FI main relay 2 4P socket (female terminals) No. 1: Test point 2 Body ground Is there batter
  • Page 40417. Open wire check (IG1(MONI)/IG1 MON line): ‐1. Reinstall the No. B11 fuse. ‐2. Disconnect the following connector. PCM connector E (80P) ‐3. Turn the vehicle to the ON mode. ‐4. Measure the voltage between test points 1 and 2. Test condition Vehicle ON mode PCM connector A (50P): disconnected PCM
  • Page 405Is there battery voltage? YES Go to step 20. NO Repair an open in the +B IGP wire between the relay circuit board and the No. A7 fuse.■ 20. Open wire check (FI MAIN RLY CL- line): ‐1. Check for continuity between test points 1 and 2. Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disc
  • Page 406Is there continuity? YES The FI MAIN RLY OUT wire is OK. Go to step 22. NO Repair an open in the FI MAIN RLY OUT wire between the PCM (A8) and the relay circuit board.■ 22. Relay circuit board check: ‐1. Remove and test the relay circuit board. Is the relay circuit board OK? cardiagn.com YES The rel
  • Page 407PCM Removal and Installation NOTE: Where icon is shown, click for further information. Make sure the HDS or the MVCI has the latest HDS software version. If you are replacing the PCM, do the all procedures. If you are replacing the PCM after substituting a known-good PCM, reinstall the original PCM,
  • Page 408cardiagn.com 1. HDS - Connect 2. READ DATA (Engine Oil Life) - Select 1. Select the REPLACE PCM MENU, then select READ DATA, and follow the screen prompts. NOTE: Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) them into the new PCM. If
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  • Page 4105. Connector (PCM) - Disconnect 1. Disconnect the PCM connectors No. 1 (A) and No. 2 (B). cardiagn.com 6. PCM Assembly - Remove 7. PCM - Remove NOTE: Where icon is shown, click for further information. If you are replacing the PCM, do the all procedures. If you are removing the PCM, skip the procedu
  • Page 411cardiagn.com Torque: N·m (kgf·m, lbf·ft) 2
  • Page 412cardiagn.com Detailed information, notes and precautions Torque: N·m (kgf·m, lbf·ft) 1. PCM - Install 2. PCM Assembly - Install 3. Connector (PCM) - Connect
  • Page 4131. Connect the PCM connectors No. 1 (A) and No. 2 (B). NOTE: Make sure the harness grommets (C) is positioned securely. 4. PCM Cover - Install cardiagn.com 5. SCS - Open 1. Exit the SCS mode with the HDS. Procedure After Replacing PCM 6. VIN - Input 1. Turn the vehicle to the ON mode. NOTE: DTC P063
  • Page 4141. If the READ DATA failed in "READ DATA (Engine Oil Life) - Select", do these procedures: Replace the engine oil. Replace the engine oil filter. 10.DTC - Clear 1. Clear any Pending or Confirmed DTCs with the HDS. 11. PCM - Update 12.PCM - Fuel Learn cardiagn.com
  • Page 415PCM Removal and Installation NOTE: Make sure the HDS or the MVCI has the latest HDS software version. If you are replacing the PCM after substituting a known-good PCM, reinstall the original PCM, then do this procedure. If you are removing or substituting the PCM, skip the procedures of READ DATA (E
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  • Page 4173. SCS - Short 1. Turn the vehicle to the OFF (LOCK) mode. 2. Jump the SCS line with the HDS, and wait more than 1 minute. 4. Connector (PCM) - Disconnect 5. Bolts - Loosen and Remove 6. PCM - Remove cardiagn.com NOTE: If you are removing the PCM, skip the procedures of using the HDS. If you are sub
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  • Page 419Torque: N·m (kgf·m, lbf·ft) 1. PCM - Install 2. Bolts - Tighten 3. Connector (PCM) - Connect 4. SCS - Open 1. Exit the SCS mode with the HDS. cardiagn.com Procedure After Replacing PCM 5. VIN - Input 1. Turn the vehicle to the ON mode. NOTE: DTC P0630 VIN Not Programmed or Mismatch may be stored bec
  • Page 4201. If the READ DATA failed in "READ DATA (Engine Oil Life) - Select", do these procedures: Replace the engine oil. Replace the engine oil filter. 9. DTC - Clear 1. Clear the Pending or Confirmed DTCs with the HDS. 10.PCM - Update 11. PCM - Idle Learn cardiagn.com 12.CKP Pattern - Clear/Learn
  • Page 421PCM Reset 1. HDS - Connect 2. PCM - Reset 1. Select the PGM-FI system with the HDS. 2. Reset the PCM with the HDS while the engine is stopped. 3. Turn the vehicle to the OFF (LOCK) mode. 4. Turn the vehicle to the ON mode, and wait 30 seconds. cardiagn.com 5. Turn the vehicle to the OFF (LOCK) mode,
  • Page 422PCM Reset 1. HDS - Connect 2. PCM - Reset 1. Select the PGM-FI system with the HDS. 2. Reset the PCM with the HDS while the engine is stopped. 3. Turn the vehicle to the OFF (LOCK) mode. 4. Turn the vehicle to the ON mode, and wait 30 seconds. cardiagn.com 5. Turn the vehicle to the OFF (LOCK) mode,
  • Page 423PCM Update NOTE: High temperature in the engine compartment might cause the PCM to become too hot to run the update. If the engine has been running before this procedure, open the hood and cool the engine compartment. 1. PCM - Update 2. PCM - Fuel Learn cardiagn.com
  • Page 424PCM Update Special Tool Required Image Description/Tool Number MVCI unit with the latest control module (CM) update software installed cardiagn.com NOTE: High temperature in the engine compartment might cause the PCM to become too hot to run the update. If the engine has been running before this pro