Engine Control Module

1 of 2 (Connectors A and B)

ECM Connector Terminal End View (Part 1 Of 2):

A1 = FUEL PUMP RELAY DRIVE.
A2 = MANUAL TRANS SHIFT LAMP or AUTO.TRANS. TCC CONTROL.
A3 = EGR SOLENOID CONTROL.
A4 = A/C RELAY CONTROL.
A5 = SERVICE ENGINE SOON LIGHT CONTROL.
A6 = IGN & ECM FUSE.
A8 = SERIAL DATA.
A9 = DIAGNOSTIC TEST TERMINAL.
A10 = SPEED SENSOR SIGNAL.
A11 = CTS & TPS SENSOR GROUND.
A12 = SYSTEM GROUND.

B1 = BATTERY 12 VOLTS.
B2 = FUEL PUMP SIGNAL.
B3 = EST REFERENCE LOW.
B5 = EST REFERENCE HIGH.
B8 = A/C SIGNAL.
B10 = PARK/NEUTRAL SWITCH SIGNAL.


2 of 2 (Connectors C and D)

ECM Connector Terminal End View (Part 2 Of 2):

C3 = IAC "B" LOW.
C4 = IAC "B" HIGH.
C5 = IAC "A" HIGH.
C6 = IAC "A" LOW.
C8 = PS SWITCH
C9 = CRANK SIGNAL.
C10 = COOLANT TEMP SENSOR.
C11 = MAP SIGNAL.
C12 = IAT SIGNAL
C13 = TPS SIGNAL.
C14 = 5 VOLT REF MAP & TPS.
C16 = BATTERY 12 VOLTS.

D1 = SYSTEM GROUND.
D2 = MAP & IAT SENSOR GROUND.
D4 = EST CONTROL.
D5 = EST BYPASS.
D6 = OXYGEN SENSOR GROUND.
D7 = OXYGEN SENSOR SIGNAL.
D9 = GROUND.
D10 = GROUND.
D16 = INJECTOR A.