Toyota
Jeep Cherokee
 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 and an integral chime tone generator to perform the functions of the chime warning module on this model. The instrument cluster circuitry also has a self-diagnostic capability.

Refer to Group 8E - Instrument Panel Systems for more information on this feature.

Hard-wired chime warning system inputs to the instrument cluster include the following:

  •  Driver door jamb switch
  •  Driver seat belt switch
  •  Headlamp switch
  •  Key-in ignition switch.

The only instrument cluster diagnosis found in this group consists of confirming the viability of the hardwired chime request inputs to the instrument cluster circuitry. 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 Group 8E - Instrument Panel Systems for the instrument cluster service procedures. The instrument cluster chime warning circuitry and chime tone generator cannot be repaired and, if faulty or damaged

    More about «Description and operation»:

    Instrument cluster

    Driver door jamb switch

    Driver seat belt switch

    Key-in ignition switch

    Headlamp switch

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