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Thread: short in circuit 38

  1. #1
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    Default short in circuit 38

    Trying to chase a draw in my bk/o circuit (38) from the starter solenoid, with my test light from battery to positive cable I have a blinking light,(thinking CB or relay) I have removed all fuses not change (this circuit is actually on a circuit breaker) if I am reading my book correctly , this wire feeds the ecm (pcm) to the eec power relay . unplugged processor no change . any ideas ??

    this car has auto dim wo/keyless entry 1987 20th anniversary

  2. #2
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    What light is blinking?

  3. #3
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    page 57,
    87 EVTM for my hunting down exactly where you "may be".

    ckt 38 is on teh print **not** powering the eec relay,, that ckt 38 is a hot at all times side tap that travels over to feed pin 1 of the EEC.
    with the

    jump over to page 58 and you see the path for the fuel pump relay power by way of the eec power relay.

    Perhaps your chime module with the door open is causing a blink,, especially if the chime speaker is broke but the ckt is still doing the ding/ding / ding / ding.

    look at your chime module power and see if that ties bact to get its source from the Blk /Org ckt 38.

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    After rereading your post, I understand better what you are doing. With the positive battery cable disconnected from the battery and a test light between the battery post and the cable, the test light is blinking.

    See page 23 of the EVTM
    1. Unplug the connectors on the alternator.
    2. If still blinking, disconnect the two BK/O wires at the starter solenoid one at a time. Chase the BK/O wire that has the problem into the harness to the splice with three fuse links.
    3. Let us know if it is the three black fuse links splice or the one black and two blue fuse links splice.

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    test light

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    Read post #4

  7. #7
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    it is the tripple black set of fuse links, already know it in circuit 38,

  8. #8
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    EVTM page 83:
    Figure 1 View A
    1. Unplug the one wire pig tail in the Auto Dimmer Control harness to the main headlight switch. This will isolate the Auto Lamp feature stuff from circuit 38.

    2. Still blinking, unplug the main headlight switch connector.
    Attached Images Attached Images

  9. #9
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    Pulled both connectors (dimmer control and headlight switch) i do NOT have the red arrowed connector on my car, and light is still blinking. the image you have is from the EVTM ? or a shop manual?IMG_3074.jpg
    Last edited by 20thanvcat; 05-31-2017 at 08:28 AM.

  10. #10
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    this is the first plug I pulled, I added a 3g alt and questioned if it was wired correctly, but the light was still blinking, and later isolated it to the black/ orange wire at hardshell connector c497


    reply to post #8

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