1. #1
    MarkSD's Avatar
    MarkSD is offline Junior Member
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    2004 Grand Cherokee Laredo 4.7L V-8 wiring issue

    Just suddenly lost use of passenger side door locks, windows, driver side rear electric door lock, and tailgate door lock.
    Also, passenger electric seat moves back and forward but not up or down. Everything was good this morning. All this in one shot! Have the Haynes manual but need more electrical diagrams - where can I get them?

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    JPNinPA's Avatar
    JPNinPA is offline Senior Member
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    Check the door switch and the wiring going into the door. The wires get flexed and can break over time.

    PS the FSM from jeep is the best investment you could make.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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    Re: 2004 Grand Cherokee Laredo 4.7L V-8 wiring issue

    Thanks JP. Downloaded all 2333 pages - very helpful. Now I need a wiring harness layout schematic. Looked at passenger door transition - wiring is good but no power when there should be. Checked power out at JB on that circuit and have it. Need to follow cabling from under driver's dash to passenger under dash - where does it track over? Inside cabin under dash or through driver side firewall through engine compartment and through passenger firewall? FSM has no harnessing layout info.
    THx

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    Re: 2004 Grand Cherokee Laredo 4.7L V-8 wiring issue

    Update - using a voltage needle probe to tap through the lead wire in question - found the issue to be with the pin connector (receptacle) on the JB-C2 plug assembly.

    Thanks all.

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    JPNinPA's Avatar
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    Glad to hear you figured it out.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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