Electronic/Powertrain Control Module (ECM/PCM)

ECM Wiring Diagram:

B8 = DIAGNOSTIC TEST
D1 = ECM GROUND
A12 = ECM GROUND
C8 = OXYGEN SENSOR REFERENCE LOW
D3 = SERIAL DATA
C5 = VSS (LOW)
C3 = VSS (HIGH)
C4 = VSS OUTPUT
C7 = OXYGEN SENSOR SIGNAL
A11 = MAP SENSOR GROUND
B11 = MAP SIGNAL
A8 = +5 VOLT REFERENCE
B12 = TPS SIGNAL
B7 = A/C PRESSURE SENSOR SIGNAL
B10 = CTS SIGNAL
B9 = IAT SIGNAL
D2 = SENSOR GROUND
D5 = PARK/NEUTRAL SWITCH (A/T)

ECM Wiring Diagram:

D8 = A/C REQUEST
B1 = A/C RELAY CONTROL
B2 = COOLING FAN RELAY CONTROL
A9 = KEEP ALIVE MEMORY (B+)
A10 = KEEP ALIVE MEMORY (B+)
C10 = FUEL PUMP RELAY CONTROL

ECM Wiring Diagram:

A5 = CHECK ENGINE LIGHT CONTROL
A4 = TCC OR SHIFT LIGHT CONTROL
A2 = EGR SOLENOID CONTROL
A3 = CANISTER PURGE SOLENOID CONTROL
C15 = INJECTOR DRIVER 1 & 4
C12 = INJECTOR DRIVER 2 & 3
A7 = IGNITION FEED
C16 = INJECTOR GROUND
C13 = INJECTOR GROUND
C8 = OXYGEN SENSOR REFERENCE LOW
C1 = EST A
C2 = EST B
D10 = HIGH REFERENCE
D9 = LOW REFERENCE
C9 = SHIELD
A6 = TACHOMETER
B6 = IAC COIL "A" HIGH
B5 = IAC COIL "A" LOW
B3 = IAC COIL "B" HIGH
B4 = IAC COIL "B" LOW