Fuel and Emissions Systems

System Descriptions (cont'd)

11-9  

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

Wire side of female terminals

NOTE: Standard battery voltage is 12 V.

Terminal number Wire colour Terminal name Description Signal
1 BLK/WHT PO2SHTC (PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S) HEATER CONTROL) Drives primary HO2S heater With ignition switch ON (II): battery voltage

With fully warmed up engine running: duty controlled

2 YEL/BLK IGP2 (POWER SOURCE) Power source for the ECM/PCM circuit With the ignition switch ON (II): battery voltage

With the ignition switch OFF: about 0 V

3 YEL/BLK IGP1 (POWER SOURCE) Power source for the ECM/PCM circuit With the ignition switch ON (II): battery voltage

With the ignition switch OFF: about 0 V

4 BLK PG2 (POWER GROUND) Ground for the ECM/PCM circuit Less than 1.0 V at all times
5 BLK PG1 (POWER GROUND) Ground for the ECM/PCM circuit Less than 1.0 V at all times
6 WHT PHO2S (PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S), SENSOR 1) Detects primary HO2S sensor (sensor 1) signal With throttle fully opened from idle with fully warmed up engine: about 0.6 V

With throttle quickly closed: below 0.4 V

7 BLU CKP (CRANKSHAFT POSITION (CKP) SENSOR) Detects CKP sensor signal With engine running: pulses
8 YEL VCCR (SENSOR VOLTAGE RETURN) Detects sensor voltage With ignition switch ON (II): about 5 V

With the ignition switch OFF: about 0 V

9 RED/BLU KS (KNOCK SENSOR) Detects knock sensor signal With engine knocking: pulses

With ignition switch ON (II): about 5 V

10 GRN/YEL SG2 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
11 GRN/WHT SG1 (SENSOR GROUND) Sensor ground Less than 1.0 V at all times
12 BLK/RED IACV (IDLE AIR CONTROL (IAC) VALVE) Drives IAC valve With engine running: duty controlled

With ignition switch ON (II): about 5 V

13*1 WHT/BLK EGRP (EXHAUST GAS RECIRCULATION (EGR) VALVE POSITION SENSOR) Detects EGR valve position sensor signal With engine running: 1.2 V-2.0 V

(depending on EGR valve lift)

15 RED/BLK TPS (THROTTLE POSITION (TP) SENSOR) Detects TP sensor signal With throttle fully open: about 4.8 V

With throttle fully closed: about 0.5 V

18 WHT/GRN VSS (VEHICLE SPEED SENSOR (VSS)) Detects VSS signal With ignition switch ON (II) and front wheels rotating: cycles 0 V-about 5 V or battery voltage

*1:D17A9 engine

*2:A/T