Electronic/Powertrain Control Module (ECM/PCM)

ECM (Part 1 of 4):

A8 = SERIAL DATA.
A9 = DIAGNOSTIC TEST.
A12 = SYSTEM GROUND.
C9 = CRANK SIGNAL.
D7 = OXYGEN SENSOR SIGNAL.
D6 = OXYGEN SENSOR GROUND.
D2 = MAP GROUND (4.3L & V8 R/V,M,G,P).
A11 = MAP GROUND (4.3L & V8 C/K).
C11 = MAP SIGNAL.
C14 = +5V REFERENCE.
C13 = TPS SIGNAL.
A11 = SENSOR GROUND (4.3L & V8 R/V,M,G,P).
D2 = SENSOR GROUND (4.3L & V8 C/K).
C10 = CTS SIGNAL.
B8 = A/C SIGNAL.

ECM (Part 2 of 4):

C5 = IAC "A" HI.
C6 = IAC "A" LO.
C4 = IAC "B" HI.
C3 = IAC "B" LO.
B1 = 12 VOLT.
C16 = 12 VOLT.
A1 = FUEL PUMP RELAY DRIVE (12V).
B2 = FUEL PUMP SIGNAL.

ECM (Part 3 of 4):

A6 = SERVICE ENGINE SOON LAMP CONTROL.
C7 = HIGH GEAR SWITCH SIGNAL.
A7 = A/T TCC CONTROL GROUND.
A7 = M/T SHIFT LAMP.
A10 = VEHICLE SPEED SENSOR.
B10 = PARK NEUTRAL SWITCH (A/T)(12V)(EXCEPT P).

ECM (Part 4 of 4):

D16 = INJECTOR DRIVER.
D15 = INJECTOR DRIVER (5.7L P).
D14 = INJECTOR DRIVER.
C15 = INJECTOR DRIVER (5.7L P).
A4 = EGR SOLENOID.
A4 = EVRV SOLENOID.
C2 = EAC SOLENOID.
A6 = 12V IGNITION.
B7 = KNOCK RETARD SIGNAL (ESC) (EXCEPT P).
D4 = EST.
B6 = REFERENCE.
D5 = BYPASS.
B3 = REF. LOW.