Electronic/Powertrain Control Module (ECM/PCM)

ECM Wiring Diagram (Part 1 Of 3):

A8 = SERIAL DATA
A9 = DIAGNOSTIC "TEST" TERMINAL
A12 = ECM GROUND
D1 = ECM GROUND
D6 = OXYGEN SENSOR GROUND
D7 = OXYGEN SENSOR SIGNAL
A10 = VSS SIGNAL
C12 = MAT SIGNAL
C10 = COOLANT TEMPERATURE SENSOR SIGNAL
A11 = CTS,TPS AND MAT SENSOR GROUND
C13 = TPS SIGNAL
C14 = +5 VOLT REFERENCE
C11 = MAP SIGNAL
D2 = MAP GROUND
C9 = CRANK SIGNAL
C5 = IAC COIL "A" HI
C6 = IAC COIL "A" LO
C4 = IAC COIL "B" HI
C3 = IAC COIL "B" LO

ECM Wiring Diagram (Part 2 Of 3):

B10 = PARK NEUTRAL SWITCH SIGNAL
A5 = "SERVICE ENGINE SOON LIGHT" CONTROL
C7 = 4TH GEAR SWITCH SIGNAL
A7 = A/T TCC CONTROL
A7 = M/T SHIFT LIGHT CONTROL
D15/16 = INJECTOR DRIVER #1
D14/C15 = INJECTOR DRIVER #2
A6 = IGNITION FEED
B6 = ANTI-THEFT SIGNAL
D4 = EST
B5 = REFERENCE
D5 = BYPASS
B3 = DISTRIBUTOR GROUND REFERENCE LOW

ECM Wiring Diagram (Part 3 Of 3):

C16 = BATTERY +
B1 = BATTERY +
A1 = FUEL PUMP RELAY DRIVE
A12 = ECM GROUND
B2 = FUEL PUMP SIGNAL
C8 = P/S PRESSURE SWITCH SIGNAL
B8 = A/C REQUEST SIGNAL
B7 = SPARK RETARD SIGNAL (ESC)
C2 = AIR PORT SOLENOID CONTROL
A3 = CANISTER PURGE CONTROL
A4 = EGR SOLENOID CONTROL (PWM)