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2002 Chrysler Town & Country Question: gauges, speedo, tach, gear selector go out when blinker is turned on

 

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shadetreemech, Albion, NY, November 13, 2010, 19:07
 Rookie

When I put on my blinker or hazards my instrument panel goes out which includes: fuel, temp, spedometer, tach gauges as well as the gear selector, odometer, door ajar, seat belt, air bag, low oil, high beam and the other cluster of light indicators. The back light stays on but the rest of them are out. All exterior running and head lamps are on as well as the brake lights. When the gauges are on as soon as I turn on my blinker all the gagues go dead. Occasionally the complete dash of gauges and lights will then reset as though it were on start up mode and then work until the next time the turn or hazard is triggered. The blinkers never do work after it wipes out all of the other lights and gauges. If all is out then even when I just turn the key to the on position and do not start the vehicle the "dummy" lights do not come on. I have removed all of the bulbs from the blinkers to try to isolate which one was the culpret but this still did not do anything. I am wondering where the fuse or relay is for the panel of where the panel gets its power from?

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  • Answer #1

    November 15, 2010, 13:18
     Master

    The culprit may be your Multifunction Switch (turn signal wiper switch). I may be sending an erronuos voltage signal to the Body Control Module (BCM) which controls many of the functions of the instrument cluster. The Body Control Module (BCM) supplies vehicle occupants with visual and audible information and controls various vehicle functions. To provide and receive information, the BCM is interfaced to the vehicle's serial bus communications network, referred to as the Programmable Communications Interface (PCI) bus.

    This network consists of the;
    Powertrain Control Module (PCM)
    Transmission Control Module (TCM)
    Mechanical Instrument Cluster (MIC)
    Occupant Restraint Controller (ORC)
    Compass/Mini-Trip Computer (CMTC)
    Electronic Vehicle Information Center (EVIC)
    Controller Antilock Brake (CAB)
    HVAC Control Module
    Sliding Door Control Modules (driver and passenger side doors)
    Power Liftgate Module (PLG)
    Audio system equipped with RAZ, RBU, RBK, and RBB radios.
    Side Impact Airbag Control Module (SIACM)
    Memory Seat Module (MSM)
    Sentry Key Immobilizer Module (SKIM)

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    shadetreemech, November 15, 2010, 15:35
     Rookie

    Thanks for the info. After further investigation it was discoverd that the bottom of the under hood fuse block had some very corroded wires. The fuse block was replaced as well as some of the wire ends and now all is well. Thanks again.

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