Thread: body control module

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  1. #1 body control module 
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    I'm having trouble with the blower circuit. I had one source tell me it could be the body control module, however, I found information indicating it controls door locks and keyless entry. Does it have anything to do with the blower control? If so, does it have to be programmed after replacememt?
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  2. #2 Re: body control module 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    can you give us the real problem?

    Like what is the blower circut/blower motor doing?

    SMGPFC Member #1
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  3. #3 Re: body control module 
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    It will only work on fan speed 5. I have replaced the resistor and dash control unit. Tested the blower motor and checked all fuses and relays. There is some conection with the headlights, I can't figure out
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  4. #4 Re: body control module 
    Turbo is the way to go. BillBoost37's Avatar
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    I would check the fused power feed to the resistor. The ignition switch feeds most of the power in our cars and is prone to going bad. If you have no power going in and the fuse is good, I'd trace that back to the ignition switch and it's feed to check that it's giving power.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  5. #5 Re: body control module 
    SE Level Member midrange's Avatar
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    ^^^ Yup, if you have already replaced the resisitor and that didn't fix it, its your ignition switch.
    2004 Grand Prix GT1
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  6. #6 Re: body control module 
    Turbo is the way to go. BillBoost37's Avatar
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    There is a write up somewhere to bypass the power going through the ignition switch and keep the switch from being a problem.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  7. #7 Re: body control module 
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    Same problem on my '02 blower. Now doesn't even work on "5". Have replaced the resister 3 times. Solves problem only intermitently. How hard is to replace ignition switch?
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  8. #8 Re: body control module 
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    The fan only works on speed 5. I have replaced the resistor & harness, the dash control unit, tested all fuses, relays and the motor. There is some conection to the head lights. If I start the car with the blower off and then turn the blower on, it might not come on. But, I have noticed that if I turn the head lights on the blower will come on.
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