Fuel and Emissions Systems

System Descriptions (cont'd)

11-13  

ECM/PCM Inputs and Outputs at Connector E (31P)

Wire side of female terminals

NOTE: Standard battery voltage is 12 V.

Terminal number Wire colour Terminal name Description Signal
1 GRN/YEL IMO FPR (IMMOBILIZER FUEL PUMP RELAY) Drives PGM-FI main relay 2 0 V for 2 seconds after turning ignition switch ON (II), then battery voltage
2 WHT/RED SHO2S (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S), SENSOR 2) Detects secondary HO2S (sensor 2) signal With throttle fully opened from idle with fully warmed up engine: above 0.6 V

With throttle quickly closed: below 0.4 V

3 BRN/YEL LG3 (LOGIC GROUND) Ground for the ECM/PCM control circuit Less than 1.0 V at all times
4 PNK SG3 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
6 BLK/WHT SO2SHTC (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) HEATER CONTROL) Drives secondary HO2S heater With ignition switch ON (II): battery voltage

With fully warmed up engine running: duty controlled

7 RED/YEL MRLY (PGM-FI MAIN RELAY) Drives PGM-FI main relay 1 Power source for the DTC memory With ignition switch ON (II): about 0 V

With ignition switch OFF: battery voltage

9 YEL/BLK IG1 (IGNITION SIGNAL) Detects ignition signal With ignition switch ON (II): battery voltage

With ignition switch OFF: about 0 V

16 LT GRN/BLK PSPSW (POWER STEERING PRESSURE SWITCH SIGNAL) Detects PSP switch signal At idle with steering wheel in straight ahead position: about 0 V

At idle with steering wheel at full lock: battery voltage

18 RED ACC (A/C CLUTCH RELAY) Drives A/C clutch relay With compressor ON: about 0 V

With compressor OFF: battery voltage

22 WHT/BLK BKSW (BRAKE PEDAL POSITION SWITCH) Detects brake pedal position switch signal With brake pedal released: about 0 V

With brake pedal pressed: battery voltage

23 LT BLU K-LINE Sends and receives scan tool signal With ignition switch ON (II): pulses or battery voltage
24 YEL SEFMJ Communicates with multiplex control unit With ignition switch ON (II): about 5 V

With engine running under load: pulses

26 BLU NEP (ENGINE SPEED PULSE) Outputs engine speed pulse With engine running: pulses
27 RED/BLU IMOCD (IMMOBILIZER CODE) Detects immobiliser signal  
29 BRN SCS (SERVICE CHECK SIGNAL) Detects service check signal With the service check signal shorted: about 0 V

With the service check signal opened: about 5 V battery voltage

31 GRN/ORN MIL (MALFUNCTION INDICATOR LAMP) Drives MIL With MIL turned ON: about 0 V

With MIL turned OFF: battery voltage


*1:D17A9 engine

*2:A/T