## Fuel and Emissions Systems

#### System Descriptions (cont'd)

11-474

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*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*1 | 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: with TWC model

*2: without TWC model

*3: A/T