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ECU Pinouts

Discussion in 'Reference Materials' started by pissedoffsol, Jan 6, 2004.

  1. pissedoffsol

    pissedoffsol RETIRED

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    OBD 0:



    Pinout'88 HF/Si'90-1 DX (Std.)'90-1 HF/Si'89-92 EF8/9 SiR
    A1No.1 INJAux INJ w/A3No.1 INJNo.1 INJ
    A2GRD w/A4 to Main RelayGRD w/A4 to Main RelayGRD w/A4 to Main RelayGRD w/A4 to Main Relay
    A3No.2 INJAux INJ w/A1No.2 INJNo.2 INJ
    A4GRD w/A2 to Main RelayGRD w/A2 to Main RelayGRD w/A2 to Main RelayGRD w/A2 to Main Relay
    A5No.3 INJMain INJ w/A7No.3 INJNo.3 INJ
    A6Purge Cut-Off Solenoid ValvePurge Cut-Off Solenoid ValvePurge Cut-Off Solenoid Valve (HF Only)Purge Cut-Off Solenoid Valve
    A7No.4 INJMain INJ w/A5No.4 INJNo.4 INJ
    A8Lock-up Control Solenoid ValveLock-up Control Solenoid ValveLock-up Control Solenoid ValveSpool (VTEC) Solenoid Valve
    A9----
    A10-EGR Valve (CA A/T Only)EGR Valve (HF Only)Pressure Regulator Cut-Off Solenoid Valve
    A11EACV w/A17EACV w/A17EACV w/A17EACV
    A12Main Relay w/A14Main Relay w/A14Main Relay w/A14Main Relay w/A14
    A13Main Relay w/A15Main Relay w/A15Main Relay w/A15Main Relay w/A15
    A14Main Relay w/A12Main Relay w/A12Main Relay w/A12Main Relay w/A12
    A15Main Relay w/A13Main Relay w/A13Main Relay w/A13Main Relay w/A13
    A16GRD w/A18GRD w/A18GRD w/A18GRD w/A18
    A17EACV w/A11---
    A18GRD w/A16GRD w/A16GRD w/A16GRD w/A16
    B1Hazard Fuse w/Brake SwitchHazard Fuse w/Brake Switch-Hazard Fuse w/Brake Switch
    B2Tandem Valve Control Solenoid ValveTandem Valve Control Solenoid Valve--
    B3A/C Clutch RelayA/C Clutch RelayFast Idle ValveA/C Clutch Relay
    B4Radiator Fan RelayRadiator Fan RelayRadiator Fan Relay-
    B5AlternatorAlternatorAlternatorOil Pressure Switch
    B6Check Engine LightCheck Engine LightCheck Engine LightCheck Engine Light(10A)
    B7Shift Position Sensor (A/T Only)Shift Position Sensor (A/T Only)A/C Switch w/B8-
    B8A/C SwitchA/C SwitchA/C Switch w/B7A/C Switch
    B9---Brake Switch
    B10--Crank Angle SensorCrank Angle Sensor
    B11Shift Position Sensor (AT Only)Shift Position Sensor (AT Only)Clutch Switch (HF Only)Rear Defogger Switch
    B12--Crank Angle SensorCrank Angle Sensor
    B13No.2 Fuse (10A)No.2 Fuse (10A)No.2 Fuse (10A)No.2 Fuse (10A)
    B14AlternatorAlternatorAlternatorAlternator
    B15Igniter Unit w/B17Igniter Unit w/B17Igniter Unit w/B17Igniter Unit w/B17
    B16Speed SensorSpeed SensorSpeed SensorSpeed Sensor (Electrical)
    B17Igniter Unit w/B15Igniter Unit w/B15Igniter Unit w/B15Igniter Unit w/B15
    B18----
    B19ELDELDELDKnock Sensor
    B20Ign. Timing Adj. ConnectorIgn. Timing Adj. ConnectorIgn. Timing Adj. ConnectorIgn. Timing Adj. Connector
    C1Crank Angle SensorCrank Angle SensorCylinder Position SensorCylinder Position Sensor
    C2Crank Angle SensorCrank Angle SensorCylinder Position SensorCylinder Position Sensor
    C3TDC SensorTDC SensorTDC SensorTDC Sensor
    C4TDC SensorTDC SensorTDC SensorTDC Sensor
    C5TA SensorTA SensorTA SensorTA Sensor
    C6TW SensorTW SensorTW SensorTW Sensor
    C7Throttle Angle SensorThrottle Angle SensorThrottle Angle SensorThrottle Angle Sensor
    C8-EGR Valve Lift Sensor (CA A/T Only)-O2 Sensor B
    C9PA SensorPA SensorPA SensorP/S oil switch
    C10Brake SwitchBrake SwitchBrake and Reverse Light Switch (HF Only)Brake Switch
    C11MAP SensorMAP SensorMAP SensorMAP Sensor
    C12PA SensorPA SensorThrottle Angle SensorThrottle Angle Sensor
    C13PA SensorPA SensorThrottle Angle SensorThrottle Angle Sensor
    C14MAP SensorMAP SensorMAP SensorMAP Sensor
    C15MAP SensorMAP SensorMAP SensorMAP Sensor
    C16O2 Sensor AO2 Sensor AO2 Sensor AO2 Sensor A


    OBD 1 and OBD 2


    OBD2aOBD2bFunctionOBD1ColorNotes
    A01B05Injector 4A02Yellow
    A02B04Injector 3A05Light Blue
    A03B03Injector 2A03Red
    A04B11Injector 1A01Brown
    A05A08SO2HNo connection on OBD1
    A06C01PO2HA06Orange/black
    A08B12VTSA04Orange/White
    A09B20LG1A26Black/Red
    A10B02PG1A23Black
    A11B01IGP1A25Yellow/Black
    A12B23IACVA09Green/White
    A15A06PCSA20Red
    A16A16FLRA07Green/Yellow
    A17A17ACCA15Black/Red
    A18A18MILA13Green/Orange
    A19A02ALTCA16White/YellowNo connection on D16Y8 P2Nb
    A20B13ICMA21Red/Green
    A22B22LG2B02Brown
    A23B10PG2A24Black
    A24B09ICP2B01Yellow Black
    A27A20FANCA12Yellow/Green
    C01C31CKFPNo connection on OBD1
    C02C08CKPPB15Blue/Green
    C03C20TDCPB13Orange/Blue
    C04C29CYPPB11Orange
    C05A27ACSB05Blue/Red
    C06A24STSB09Blue/White
    C07A10SCSD04Brown
    C10B21VBUD01White/Blue
    C11C22CKFMNo connection on OBD1
    C12C09CKPMB16Blue/Yellow
    C13C21TDCMB14White/Blue
    C14C30CYPMB12White
    C15C10VTMD06Orange/GreenConnected to VTS on OBD2a
    C16A26PSWB08Brown/Red
    C17C05ALTFD09PinkNo connection on D16Y8 P2Nb
    C18C23VSSB10Yellow/Blue
    D01C27TPSD11Pink/Black
    D02C26ECTD13Red/White
    D03C17MAPD17Pink/White
    D04C19VCC1D19Yellow/Green
    D05A32BKSMD02Greem/White
    D06C03KSD03Red/GreenNo connection on P08, P28
    D07C16PO2SD14White
    D08C25IATD15
    D10C28VCC2D20Yellow/White
    D11C18SG2D22Green/White
    D12C07SG1D21Green/Blue
    D14A23SO2SNo connection on OBD1
    D16A30ELD10Green/RedNo connection on D16Y8 P2Nb

    DPFI to MPFI


    DPFI--MPFI-
    Pin#Wire ColorFunctionWire ColorFunction
    A1Yellow 2Aux InjectorBrown#1 Injector
    A2Black 1Main Relay/GroundBlack 1Main Relay/Ground
    A3Yellow 1Aux InjectorRed#2 Injector
    A4Black 2Main Relay/GroundBlack 2Main Relay/Ground
    A5Red 2Main InjectorLight Blue#3 Injector
    A6GreenPurge Cut Off Solenoid Valve (Coil)GreenPurge Cut Off Solenoid Valve (Coil)
    A7Red 1Main InjectorYellow 1#4 Injector
    A8Yellow 3Sedan LX A/T
    A10RedEGR Solenoid Control Valve (Coil) (A/T only)
    A11Blue/YellowEACV (Coil)Blue/YellowEACV (Coil)
    A12Green/Black 2Main RelayGreen/Black 2Main Relay
    A13Yellow/Black 2Main RelayYellow/Black 2Main Relay/Injector Resistor Box
    A14Green/Black 1Main RelayGreen/Black 1Main Relay
    A15Yellow/Black 1Main RelayYellow/Black 1Main Relay/Injector Resistor Box
    A16Brown/BlackGroundBrown/BlackGround
    A17
    A18Black/RedGroundBlack/RedGround
    Pin#Wire ColorFunctionWire ColorFunction
    B1White/GreenHazard FuseWhite/GreenHazard Fuse
    B2OrangeTandem Control Solenoid ValveBlue 1Fast Idle Control Solenoid Valve
    B3YellowA/C Clutch RelayYellowA/C Clutch Relay
    B4Yellow/GreenRadiator Fan RelayYellow/GreenRadiator Fan Relay
    B5White/YellowAlternatorWhite/YellowAlternator
    B6Green/OrangeCheck Engine Warning LightGreen/OrangeCheck Engine Warning Light
    B7Green/OrangeA/T Shift Position Console Switch (Park, Neutral)
    B8Blue/RedA/C SwitchBlue/RedA/C Switch
    B9
    B10 OrangeCrank Angle Sensor
    B11Green/BlackA/T Shift Position Console Switch (Drive)
    B12 WhiteCrank Angle Sensor
    B13Blue WhiteMain RelayBlue WhiteMain Relay
    B14Blue 2To Yellow, To AlternatorBlue 2Alternator
    B15White 1Ignitor UnitWhite 1Ignitor Unit
    B16Yellow/RedSpeed SensorYellow/RedSpeed Sensor
    B17White 2Ignitor UnitWhite 2Ignitor Unit
    B18
    B19Green/RedElectric Load DetectorGreen/RedElectric Load Detector
    B20BrownIgnition Timing Adjusting ConnectorBrownIgnition Timing Adjusting Connector
    Pin#Wire ColorFunctionWire ColorFunction
    C1OrangeCrank Angle SensorBlue/GreenCylinder Position Sensor
    C2White 4Crank Angle SensorBlue/YellowCylinder Position Sensor
    C3Orange/BlueTDC SensorOrange/BlueTDC Sensor
    C4White/BlueTDC SensorWhite/BlueTDC Sensor
    C5Red/YellowTA SensorRed/YellowTA Sensor
    C6Red/White 1TW SensorRed/White 1TW Sensor
    C7Red/BlueThrottle (Position) Angle Sensor (TPS)Red/BlueThrottle (Position) Angle Sensor (TPS)
    C8YellowEGR Lift Valve Sensor
    C9Red/White 2PA SensorRed/White 2PA Sensor
    C10Green/White 3Brake SwitchGreen/White 3Brake Switch
    C11White 1MAP SensorWhite 1MAP Sensor
    C12Green/White 2EGR Lift Valve Sensor/Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW SensorGreen White 2Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW Sensor
    C13Yellow/WhiteEGR Lift Valve Sensor/Pa Sensor/TPS SensorYellow/WhitePa Sensor/TPS Sensor
    C14Green/White 1MAP SensorGreen/White 1MAP Sensor
    C15Yellow/RedMAP SensorYellow/RedMAP Sensor
    C16White 3O2 SensorWhite 3O2 Sensor

    All OBD0, OBD1, and OBD2 as well as DPFI to MPFI conversion charts are available for offline viewing/printing in the following spreadsheet.

    Download options:

    View on Google Drive: https://drive.google.com/file/d/0B8N-X8ULCQrUdF80SDV4NnVQOEU/edit?usp=sharing
    Or download/unzip the attachment
    (both are the same)

    Document is not to be distributed. For HondaSwap.com visitors and member's use only. Reproduction and/or hosting by other websites strictly forbidden.

    Attached Files:

    Last edited by a moderator: Oct 7, 2014
  2. pissedoffsol

    pissedoffsol RETIRED

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    in case that link/pics die, i've attached them here.

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    Last edited: Jun 19, 2006
  3. Briansol

    Briansol Admins Admin

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    OBD 0 Wire Colors off HF/Si


    A1No 1 INJ Gold/Silver DOTS
    A2GRD w/A4 to main relay Black/silver DOTS
    A3No 2 Yellow/silver DOTS
    A4GRD w/A2 to main relay Black/silver DOTS
    A5NO 3 INJ Red/silver DOTS
    A6Purge cut off solenoid HF only Green/silver DOTS
    A7NO 4 INJ Red/silver DOTS
    A8Lock-up control solenoid valve/VTEC
    A9nothing
    A10EGR valve HF only Yellow/red
    A11EACV w/A17 Blue/yellow
    A12MAIN relay w/A14 Green/black
    A13MAIN relay w/A15 Yellow/black
    A14MAIN relay w/A12 Green/black
    A15MAIN relay w/A13 Yellow/black
    A16GRD w/A18 Brown/black
    A17Nothing or B18 IAB Solenoid
    A18GRD w/A18 Black/red
    B1Hazzard/Fuse/Brake switch/No HF
    B2Tandem Valve control Solenoid valve Orange/silver DOTS NO HF OR SIR
    B3FAST Idle valve or A/C Clutch Relay Yellow/Silver DOTS
    B4RADIATOR FAN RELAY Yellow/green NO SIR
    B5ALTERNATOR White/silver or on SIR OIL PRESSURE SWITCH
    B6CHECK ENGINE LIGHT Green/red
    B7Shift position sensor A/T only HF/Si A/C SWITCH w/B8 Green/silver DOTS NO SIR
    B8A/C SWITCH w/B7 Blue/silver DOTS NO SIR
    B9Nothing/COULD BE BRAKE SWITCH for SIR
    B10CRANK ANGLE SENSOR Blue/green
    B11CLUTCH SWITCH (HF ONLY) Green/black OR Rear defogger Switch on SIR
    B12CRANK ANGLE SENSOR White/red
    B13NO2 FUSE 10A Blue/white
    B14ALTERNATOR Blue/silver DOTS
    B15IGNITER UNIT w/B17 White/silver DOTS
    B16SPEED SENSOR Yellow/red
    B17IGNITER UNIT w/B15 White/silver DOTS
    B18Nothing
    B19ELD or on SIR KNOCK SENSOR
    B20ING TIMING ADJ CONNECTOR Brown/red
    C1CYLINDER POSITION SENSOR Orange/silver DOTS
    C2CYLINDER POSITION SENSOR White/si lver DOTS
    C3TDC SENSOR Orange/black
    C4TDC SENSOR White/blue
    C5TA SENSOR Red/orange
    C6TW SENSOR Red/white
    C7THROTTLE ANGLE SENSOR Red/blue
    C8SECOND O/2 SENSOR For B16A
    C9PA SENSOR Red/white or ON SIR P/S OIL SWITCH
    C10BRAKE AND REVERSE LIGHTS (HF ONLY) Green/white OR on SIR BRAKE SWITCH
    C11MAP SENSOR White/brown
    C12THROTTLE ANGLE SENSOR Green/white
    C13THROTTLE ANGLE SENSOR White/yellow
    C14MAP SENSOR Green/white
    C15MAP SENSOR Yellow/red
    C16#1 O/2 SENSOR White/silver DOTS
    Last edited: Oct 7, 2014
  4. Briansol

    Briansol Admins Admin

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    Charts updated.
    phunky.buddha likes this.

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