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Thread: other ECM options

  1. #301
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    Re: other ECM options

    can you explain a little better? what do you mean by main?



  2. #302
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    Re: other ECM options

    Quote Originally Posted by guaynabo89
    can you explain a little better? what do you mean by main?
    Ooops i guess i forgot the word relay.

    When the car is running the main relay will just click off and back on quickly several time until the ecu will just go into limp mode and run really rich. I believe its the main since it sounds like the same sound I hear when i go to start it.

    Pgm-fi conversion 4-16-05
    OBD1 11-25-06
    Turbo 2-26-07
    Tuned with eCtune 239whp 237wtq

  3. #303
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    Re: other ECM options

    just to add my .02 in, if your looking for everyhint to chip your ecu yourself, moates has a kit, its $15.

    http://www.moates.net/product_info.p...products_id=42

    this page also have some nice pics of the parts being installed. you can find more detailed info on pgmfi.org

    http://home.comcast.net/~keebler65/honda/uberdata.html
    Last edited by SQ is the SQUAD; 11-13-2006 at 07:01 PM.
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  4. #304
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    Re: other ECM options

    Quote Originally Posted by Vinny
    Correct. Most of the pinouts are the same. As a general reference dfor OBD1 ECU's
    A1-INJ1 INJ1
    A2-INJ4 INJ4
    A3-INJ2 INJ2
    A4-VTS VTEC solenoid
    A5-INJ3 INJ3
    A6-PO2SHTC O2 sensor (heating element)
    A7-FLR1 fuel pump
    A8-empty
    A9-IACV IAC valve
    A10-empty
    A11-empty
    A12-FANC engine coolant temp switch
    A13-MIL MIL (check engine light)
    A14-empty
    A15-ACC (a/c compressor clutch)
    A16-ALT C alternator
    A17-IAB IAB Solenoid
    A18-empty
    A19-**
    A20-PCS EVAP purge control solenoid
    A21-ICM ICM
    A22- *per Sander* Ignitor
    A23-PG1 ground
    A24-PG2 ground
    A25-IGP2 to main relay and to gound for o
    A26-LG1 gound
    B1-IGP2 to pin A25
    B2-LG2 ground to shields for CYP & TDC
    B3-**
    B4-**
    B5-ACS a/c switch
    B6-empty
    B7-**
    B8-PSPSW PSP switch
    B9-STARTER SIGNAL starter signal
    B10-VSS vehicle speed sensor
    B11-CYP P CYP -P
    B12-CYP M CYP -M
    B13-TDC P TDC -P
    B14-TDC M TDC -M
    B15-CKP P CKP -P
    B16-CKP M CKP -M
    D1-VBU Back Up Power
    D2-BKSW brake switch
    D3-KS Knock Sensor
    D4-SCS service check connector
    D5-empty
    D6-VTM VTEC pressure switch
    D7-TXD/RXD (data link connector)
    D8-empty
    D9-ALT F alternator
    D10-ELD electric load detector
    D11-TPS TPS Signal
    D12-**
    D13-ECT ECT sensor
    D14-PHO2S O2 sensor
    D15-IAT IAT sensor
    D16-VREF VREF
    D17-MAP Map Signal
    D18-**
    C19-VCC1 MAP 5V
    C20-VCC2 TPS 5V
    C21-SG1 MAP GND
    C22-SG2 TPS GND


    My contribution to the thread. Some people dont feel like following links and stuff and dont want to have to PM people for info so I'll post some here.
    Enjoy

    the iput sockets on my ecu that i removed to make my jumper harmess, its only 2 plugs how do i know what is a,b,c,d,?





    i am using this chard for compasason
    Last edited by SQ is the SQUAD; 11-14-2006 at 12:02 PM.
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  5. #305
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    Pgm-fi conversion 4-16-05
    OBD1 11-25-06
    Turbo 2-26-07
    Tuned with eCtune 239whp 237wtq

  6. #306
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    Re: other ECM options

    thanks eric. i was just looking at that page too. lol. i had to sign up to see the images

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  7. #307

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    Re: other ECM options

    the black connector has two connectors.
    Alex.

  8. #308

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    Re: other ECM options

    You can alays count the number of pins. They're all different between the connectors

    http://pages.videotron.com/omus
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    I need these parts!
    https://www.3geez.com/forum/showthread.php?t=67742

  9. #309
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    Re: other ECM options

    Does any one know what pin is the ELD(electronic load detector) on the P75 ecu?


    On a side note i have a full pin out of the 86-87 accord to the p75 conversion harness written down and will make a spreadsheet out of it as soon as i can.

    I also solved my problem with the main relay clicking off and on. I believe it was caused by the pin on the conversion harness about to break off, since it broke yesterday and i had to fix it. Then when i took it out for a test drive i heard a loud pop out of the exhaust and the tach went to about 8 grand and i got a solid check engine light. I checked the code(4) and its for one of the sensors or its circuit, i hope its just another one of the wires in the conversion harness but i won't have time to find out until tomorrow.
    Last edited by EricW; 11-30-2006 at 06:37 PM.

    Pgm-fi conversion 4-16-05
    OBD1 11-25-06
    Turbo 2-26-07
    Tuned with eCtune 239whp 237wtq

  10. #310
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    Re: other ECM options

    glad to hear your atlest running
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  11. #311
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    Re: other ECM options

    d10 is the eld pinout on the p75 buddy


    remember I have the 94 teg manual on my pc.

    glad your getting it running

  12. #312

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    Re: other ECM options

    The ELD is a device that detects if there is a load in the electric circuit. It's used to raise the idle a bit when the alternator had more load on it.

    This isn't needed. You will not trigger the CEL light for this one. However, if you jump the service connector, the ECU will display the ELD code.

    http://pages.videotron.com/omus
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  13. #313
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    Re: other ECM options

    yup

    the eld should not trip the cel but keeping a good idle with full load on the alt is always a plus

  14. #314
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    Re: other ECM options

    bump for good info. i forgot some stuff i posted, lol. i was suprised when i reread this thread and said "i posted that?"
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  15. #315
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    Re: other ECM options

    guys share the firmware b20a obd1

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