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HOMESERVICE MANUALSCHEVROLET1992S10/T10 P/U 4WD V6-173 2.8LREPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSENGINE CONTROL MODULE
1992 Chevrolet S10/T10 P/U 4WD V6-173 2.8L

Engine Control Module

1992 Chevrolet S10/T10 P/U 4WD V6-173 2.8LSECTION Engine Control Module

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






A1 = FUEL PUMP RELAY DRIVE.
A2 = A/C RELAY CONTROL.
A4 = EGR CONTROL.
A5 = SERVICE ENGINE SOON LIGHT CONTROL.
A6 = IGN & ECM FUSE.
A7 = MANUAL TRANS SHIFT LAMP.
A8 = SERIAL DATA.
A9 = DIAGNOSTIC TEST TERMINAL.
A10 = VEHICLE SPEED SENSOR SIGNAL.
A11 = MAP SENSOR GROUND.
A12 = SYSTEM GROUND.

B1 = BATTERY 12 VOLTS.
B2 = FUEL PUMP SIGNAL.
B3 = EST REFERENCE LOW.
B5 = EST REFERENCE HIGH.
B7 = ESC SIGNAL.
B8 = A/C SIGNAL.


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






C2 = ELECTRONIC AIR CONTROL SOLENOID.,
C3 = IAC "B" LOW.
C4 = IAC "B" HIGH.
C5 = IAC "A" HIGH.
C6 = IAC "A" LOW.
C9 = CRANK SIGNAL.
C10 = COOLANT TEMP SENSOR.
C11 = MAP SIGNAL.
C13 = TPS SIGNAL.
C14 = 5 VOLT REF MAP & TPS.
C16 = BATTERY 12 VOLTS.

D1 = SYSTEM GROUND.
D2 = TPS, CTS SENSOR GROUND.
D4 = EST CONTROL.
D5 = EST BYPASS.
D6 = OXYGEN SENSOR GROUND.
D7 = OXYGEN SENSOR SIGNAL.
D14 = INJECTOR B.
D16 = INJECTOR A.



RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.