ECU pinout question
Ok so i got an eGay obd0 to obd1 and the chucko didnt send the second part of the harness so i am going to have to do it manually. i looked at the pin outs but not REAL sure on it. and i need 4 wires going to it o2 ground o2 12v switch o2 signal o2 heater control Anyone know which 2 pins i use for power and ground for the o2? Thanks So i got a6 = o2 heater control d14 = o2 signal a23 = ? PG1 ground Black, Power ground, less than 1V a25 = ? IGP2 to main relay and to ground Yel/blk, Battery positive from main relay, Battery Voltage with Key on engine on a26 = ? LG1 gound Blk/red, less than 1V b1 = ? IGP2 to pin A25 Yel/Blk, Battery positive from Main relay, Battery Voltage with key on engine on b2 = ? LG2 ground to shields for CYP & TDC Brown/Blk, <1V |
Re: ECU pinout question
Here you go.
KEY: (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 A10-empty 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 A14-empty 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 B6-empty 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) D5-empty D6-VTM VTEC pressure switch Light Blue, n/a D7-TXD/RXD (data link connector) Light Green/Red, n/a D8-empty 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 |
Re: ECU pinout question
I have the diagram, i just dont know which to use for power and ground for the o2 or does it even matter.
The ones i posted as "?" are the possible ones i know of. |
Re: ECU pinout question
the O2 sensor is extra....you dont need it ::)
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Re: ECU pinout question
Originally Posted by turbohf
the O2 sensor is extra....you dont need it ::)
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Re: ECU pinout question
Originally Posted by emoretared
Oh sweet, ill take that thing out then. itll give my honduh like 10 HP and mad rep points. :y
i havent run an O2 sensor on any of my project cars, other than my wideband (NOT looped into the ECU) |
Re: ECU pinout question
So I don't need to run an o2 with the right tune? im on a basemap atm, can i run without one? Im not a pro at tuning yet.
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