Toyota
Dodge Durango
 Service Manual
Chime/Buzzer Warning Systems » Description and operation
Instrument cluster

The instrument cluster is an electromechanical unit that contains integrated circuitry and internal programming to perform a variety of functions. The instrument cluster circuitry monitors hard-wired switch inputs, as well as message inputs received from other vehicle electronic modules on the chrysler collision detection (ccd) data bus network.

The instrument cluster uses these many inputs along with its internal programming to provide hardwired chime tone requests to the central timer module (ctm), which performs the functions of the chime warning module on this model. The instrument cluster circuitry also has a self-diagnostic capability.

Refer to instrument cluster in the diagnosis and testing section of group 8e - instrument panel systems for more information on this feature.

The only instrument cluster diagnosis found in this group consists of confirming the viability of the hardwired chime request circuit between the instrument cluster circuitry and the ctm, and diagnosis of the hard-wired seat belt switch input to the instrument cluster. For diagnosis of the ccd data bus and the data bus message inputs, a drb scan tool and the proper diagnostic procedures manual are recommended.

Refer to instrument cluster in the removal and installation section of group 8e - instrument panel systems for the instrument cluster service procedures.

Refer to the diagnosis and testing section of group 8e - instrument panel systems for more information on the remaining hard-wired instrument cluster inputs. The instrument cluster chime warning circuitry cannot be repaired and, if faulty or damaged, the instrument cluster assembly must be replaced.

    More about «Description and operation»:

    Central timer module

    Instrument cluster

    Driver door ajar switch

    Key-in ignition switch

    Headlamp switch

    Driver seat belt switch

    Dodge Durango Service Manual / Chime/Buzzer Warning Systems / Description and operation / Instrument cluster

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