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Thảo luận Sơ đồ các chân OBD1 Của ECU Honda

Thảo luận trong 'Điện - Điện tử' bắt đầu bởi Vin, 12/9/11.

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  1. Vin

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    These are the pin designations for the OBD1 ECU as well as their wire color and voltage. I always have a hard time finding this information when I need it as I'm sure others do, so here it is [​IMG]

    (voltage values measured in DC Volts unless otherwise specified)
    V = Volts
    Wht = White
    Blk = Black
    Grn = Green
    Yel = Yellow
    Brn = Brown
    Blu = Blue
    Org = Orange

    KOEO = Key On Engine Off
    KOER = Key On Engine Running

    A, B, D= Slot. Numbers are read up and down from left to right, not straight across (see diagram at end).

    A1-INJ1 INJECTOR#1 Brown, Battery Voltage with KOEO
    A2-INJ4 INJECTOR#4 Yellow, Battery Voltage with KOEO
    A3-INJ2 INJECTOR#2 Red, Battery Voltage with KOEO
    A4-VTS VTEC solenoid GRN/YEL, n/a
    A5-INJ3 INJECTOR#3 Blue, Battery Voltage with KOEO
    A6-PO2SHTC O2 sensor heating element Org/Wht, Battery Voltage with KOEO
    A7-FLR1 fuel pump Grn/BLK, Battery Voltage with KOEO
    A8-empty A7 and A8 have the same circurt, so they can be the same
    A9-IACV IAC valve Blk/Blu, About 10v KOEO on Warm engine
    A11-EGR Control Solenoid Valve (if the ECU has it) Red, n/a
    A12-FANC engine coolant temp switch Blu/red, n/a
    A13-MIL MIL (check engine light) Blu/wht, n/a
    A15-ACC (a/c compressor clutch) Red/Blu, n/a
    A16-ALT C alternator Wht/Grn, n/a
    A17-IAB IAB Solenoid Pink, n/a
    A18-Org/Red, Transmission Control Module (A/T), n/a
    A19-White, Intake control solenoid, Battery Voltage with KOEO
    A20-PCS EVAP purge control solenoid Red/Grn, n/a
    A21-ICM Yel/Grn, Ignition Control Module output signal, About 10V KOEO
    A22-Igniter, same as A21
    A23-PG1 ground Black, Power ground, less than 1V
    A24-PG2 ground same as A23
    A25-IGP2 to main relay and to ground Yel/blk, Battery positive from Main relay, Battery Voltage with KOEO
    A26-LG1 gound Blk/red, less than 1V

    B1-IGP2 to pin A25 Yel/Blk, Battery positive from Main relay, Battery Voltage with KOEO
    B2-LG2 ground to shields for CYP & TDC Brown/Blk, <1V
    B3-Orange, upshift/downshift comparative input, n/a
    B4-Pink, upshift/downshift comparative input, n/a
    B5-ACS a/c switch Blu/Blk, a/c input, ~5V with KOEO & A/C off; <1V KOER with A/C & blower on
    B7-Light green, Park/Neutral switch (A/T), <1V in Park or Neutral with KOEO; 5V in Park or neutral with KOER; Battery voltage in all other positions
    B8-PSPSW PSP switch Red/Green, Power steering oil pressure switch, 0V KOEO; Battery Voltage KOER While slowly turning steering wheel
    B9-STARTER SIGNAL starter signal Blue/red, Battery Voltage in the START position (clutch depressed on M/T models)
    B10-VSS vehicle speed sensor Orange, Pulses 0-12V while turning the left front wheel
    B11-CYP P CYP(#1 piston position) -P Orange, CYP sensor input, n/a
    B12-CYP M CYP -M White, CYP sensor signal, n/a
    B13-TDC P TDC(top dead ceter) -P Org/Blue, TDC sensor input, n/a
    B14-TDC M TDC -M Wht/Blue, TDC sensor signal, n/a
    B15-CKP P CKP(crank position) -P Blu/Green, CKP Sensor input, n/a
    B16-CKP M CKP -M Blu/yel, CKP Sensor signal, n/a

    D1-VBU Back Up Power Wht/Yel, Battery positive From battery through Fuse Box, Battery Voltage at ALL times
    D2-BKSW brake switch Grn/wht, Battery voltage at all times
    D3-KS Knock Sensor Red/Blue, n/a
    D4-SCS service check connector Brown/Wht, ~5V (M/T); ~11V (A/T)
    D6-VTM VTEC pressure switch Light Blue, n/a
    D7-TXD/RXD (data link connector) Light Green/Red, n/a
    D9-ALT F alternator Wht/Red, Alternator Charging Signal, ~4.5V KOEO; Decreases under Electrical load (Headlights & rear defogger on) At warm idle
    D10-ELD electric load detector input Grn/Blk, n/a
    D11-TPS (throttle position sensor) Signal Red/Blk, ~0.5V KOEO with throttle fully closed; ~4.5V KOEO with throttle fully open
    D12-Wht/Blk, EGR Valve Lift sensor, ~1.2V KOEO
    D13-ECT (engine coolant temp) sensor input Yel/Blu, ~5V KOEO (varies with temperature)
    D14-PHO2S O2 sensor White, heated 02 sensor Signal, 0.4-0.5V when ignition is turned on; drops to less than 0.1V within 2 minutes
    D15-IAT Intake Air Temperature sensor signal Red/Yel, .05-4.5V KOEO(Varies with temperature)
    D16-VREF (no info)
    D17-MAP Map Signal Wht/Blu, ~3V KOEO (Varies with Temperature)
    D18-Light Green/Blk, Transmission Control Module (A/T Only), n/a
    D19-Red/Wht, Reference Voltage, ~5V KOEO
    D20-Yel/Wht, Reference Voltage, ~5V KOEO
    D21-Blue/Wht, Sensor ground, <1V
    D22-Green/Wht, Sensor ground, <1V


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