Tuesday, October 19, 2010

1986-1987 Accord A20A3 ECU Pinout

For reference for people who plan on doing engine swaps or ECU swaps in their 3rd gen Accord here is the 86-87 EFI pinouts:

 Connector "A"

PinUnitWire Color
A1Injector #1Brown
A2GroundBlack
A3Injector #2Red
A4GroundBlack
A5Injector #3Blue
A6Fuel Pump RelayGreen-Black
A7Injector #4Yellow
A8Cold Advance SolWhite
A9N/AN/A
A10EGR Control SolRed
A11N/AN/A
A12Fuel Pump RelayGreen-Black
A13Main Relay Input (Batt)Yellow-Black
A14A/T Idle Control SolGreen
A15Main Relay Input (Batt)Yellow-Black
A16GroundBrown-Black
A17Power InputWhite-Yellow
A18GroundBlack-Red

Connector "B"

PinUnitWire Color
B1A/C Idle Control SolRed
B2N/AN/A
B3N/AN/A
B4Fast Idle Control SolRed-Green
B5N/AN/A
B6PGMFI Ind LightGreen-Red
B7Gear Sel SwitchLt Green
B8A/CBlue-Red
B9Gear Sel SwitchGreen-White
B10N/AN/A
B11N/AN/A
B12N/AN/A
B13Starter InputBlue-Red
B14ALT RF InputWhite-Red
B15N/AN/A
B16N/AN/A
B17N/AN/A
B18Speed SensorYellow
B19N/AN/A
B20N/AN/A

Connector "C"


PinUnitWire Color
C1Cyl SensorOrange
C2Cyl SensorWhite
C3TDC SensorOrange-Blue
C4TDC SensorWhite-Blue
C5Intake Air Temp SensWhite-Red
C6Coolant Temp SensYellow-Green
C7TPS InputRed-Yellow
C8EGR Sensor InputYellow
C9Atmosphere Pres SensRed
C10N/AN/A
C11Map SensorWhite-Blue
C12Sensor Ground 2Green-White
C13VCC2Yellow-White
C14Sensor Ground 1Blue-White
C15VCC1Red-White
C16Oxygen SensorWhite

  

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