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Home >> Chevrolet >> 1993 >> S10/T10 P/U 2WD L4-151 2.5L >> Repair and Diagnosis >> Diagrams >> Connector Views >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Connector Description
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Connector Description


1 of 4 (Connector A)


ECM Connector Terminal End View (Part 1 of 4):






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 = MALFUNCTION INDICATOR LAMP (MIL) CONTROL.
A6 = IGN & ECM FUSE.
A8 = SERIAL DATA.
A9 = DIAGNOSTIC TEST TERMINAL.
A10 = SPEED SENSOR SIGNAL.
A11 = ECT & TP SENSOR GROUND.
A12 = SYSTEM GROUND.


2 of 4 (Connector B)


ECM Connector Terminal End View (Part 2 of 4):






B1 = BATTERY FEED.
B2 = FUEL PUMP SIGNAL.
B3 = IC REFERENCE LOW.
B5 = IC REFERENCE HIGH.
B8 = A/C REQUEST SIGNAL.
B10 = PARK/NEUTRAL SWITCH SIGNAL.


3 of 4 (Connectors C)



ECM Connector Terminal End View (Part 3 of 4):






C3 = IAC "B" LOW.
C4 = IAC "B" HIGH.
C5 = IAC "A" HIGH.
C6 = IAC "A" LOW.
C8 = PSP SWITCH
C9 = CRANK SIGNAL.
C10 = ECT SENSOR.
C11 = MAP SIGNAL.
C12 = IAT SIGNAL
C13 = TP SIGNAL.
C14 = 5 VOLT REF MAP & TPS.
C16 = BATTERY FEED.



4 of 4 (Connectors D)


ECM Connector Terminal End View (Part 4 of 4):






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