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389 starter interlock

Discussion in 'Peterbilt Forum' started by ClineER, Feb 4, 2017.

  1. Feb 4, 2017 #1
    ClineER

    ClineER Light Load Member

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    Apr 27, 2016
    N.E. Oklahoma
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    Working on a 13 389 ISX. Eveey so often starter interlock relay behind dash kicks out. Does anyone have a schematic or knows what controls the circuit
     
    ClineER, Feb 4, 2017
    ClineER, Feb 4, 2017
    #1
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  3. Feb 8, 2017 #2
    pushbroom

    pushbroom Road Train Member

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    Cecu will control the starter interlock relay. Starter overheat protection is the primary function. If you go to a pete dealer or someone who has ESA you can tell the cecu to disable to relay. Is this truck an auto?
     
    pushbroom, Feb 8, 2017
    pushbroom, Feb 8, 2017
    #2
    ClineER Thanks this.
  4. Feb 8, 2017 #3
    ClineER

    ClineER Light Load Member

    229
    139
    Apr 27, 2016
    N.E. Oklahoma
    0
    No 18 speed. No thermo protect switch on starter. I put a bypass wire In relay and it worked fine. May just leave jumper In. Thanks for help
     
    ClineER, Feb 8, 2017
    ClineER, Feb 8, 2017
    #3
  5. Feb 8, 2017 #4
    pushbroom

    pushbroom Road Train Member

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    The cecu just has a set time of cranking it allows before it locks it out for starter protection. No sensor needed on the starter.

    Bypassing it will work as well as getting it turned off
     
    pushbroom, Feb 8, 2017
    pushbroom, Feb 8, 2017
    #4
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