Operation - LHD: Notes

All gauges receive battery current through the Instrument Cluster circuitry only when the ignition switch is in the ON or START positions. With the ignition switch in the OFF position battery current is not supplied to any gauges, and the cluster circuitry is programmed to move all of the gauge needles back to the low end of their respective scales. Therefore, the gauges do not accurately indicate any vehicle condition unless the ignition switch is in the ON or START positions.

Each of the gauges contains an electronically controlled stepper motor unit. The cluster circuitry completely controls the activation and deactivation of these stepper motors to position each gauge needle in the appropriate position based upon cluster programming and electronic messages received over the Controller Area Network (CAN) data bus or the Local Interface Network (LIN) data bus.

The gauges are diagnosed using the instrument cluster self-test. Refer to DIAGNOSIS AND TESTING . Proper testing of the CAN or LIN data bus and the electronic data bus message inputs to the cluster that control each gauge requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.