Electronic/Powertrain Control Module (ECM/PCM)

ECM Wiring Diagram - 3.1L 92 U Body (1 of 4):

C16 = B +.
B1 = B +.
A1 = FUEL PUMP RELAY DRIVE B +.
A12 = SYSTEM GROUND.
B2 = FUEL PUMP SIGNAL.
C7 = TCC SELECTOR.
A2 = SA/C CONTROL DRIVER.
B8 = SA/C REQUEST SIGNAL.

ECM Wiring Diagram - 3.1L 92 U Body (2 of 4):

A8 = SERIAL DATA.
A9 = DIAGNOSTIC TEST.
A12 = SYSTEM GROUND.
D1 = SYSTEM GROUND.
D6 = OXYGEN SENSOR GROUND.
D7 = OXYGEN SENSOR SIGNAL.
B10 = PARK/NEUTRAL SWITCH (A/T).
A10 = VSS SIGNAL.
C10 = ECT SIGNAL.
D2 = SENSOR GROUND.
C13 = TPS SIGNAL.
C14 = +5 VOLT REFERENCE.
C11 = MAP SIGNAL.
A11 = SENSOR GROUND.
A4 = EVRV SOLENOID.
C9 = CRANK SIGNAL.
C5 = IAC COIL "A" HIGH.
C6 = IAC COIL "A" LOW.
C4 = IAC COIL "B" HIGH.
C3 = IAC COIL "B" LOW.

ECM Wiring Diagram - 3.1L 92 U Body (3 of 4):

A6 = IGNITION FEED.
B7 = SPARK RETARD (ESC).
D16 = INJECTOR 1 DRIVE.
D14 = INJECTOR 2 DRIVE.
A5 = SERVICE ENGINE SOON LIGHT CONTROL.
A7 = TCC CONTROL (A/T).
D4 = EST CONTROL.
B5 = EST REFERENCE.
D5 = EST BYPASS.
B3 = EST REFERENCE LOW.

ECM Wiring Diagram - 3.1L 92 U Body (4 of 4):

C2 = COOLING FAN CONTROL.
B9 = FAN REQUEST (A/C PRESSURE SWITCH SIGNAL).
C1 = COOLING FAN CONTROL (FRONT AND REAR A/C OPTION).