Diagnostic Self Test

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

The Instrument Cluster is capable of performing a Diagnostic Self Test. This self test can be initiated manually by depressing and holding the odometer trip reset button while cycling the ignition from the Off to the On position. This self test can also be initiated using the DRBIII®. During the self test, all of the PCI Bus controlled light emitting diode (LED) indicators will illuminate. (NOTE: The VTSS indicator can be turned on and off through the BCM using the DRBIII®; the Airbag indicator is illuminated by the ORC module in response to a PCI Bus message from the cluster). The Speedometer, Tachometer, Fuel gauge, and the Engine Coolant Temperature gauge will position the pointers at the respective calibration points. The vacuum fluorescent (VF) display will illuminate all segments beginning with 111111 through 999999, and then display the cluster software version. The chime will sound 5 (five) times. The cluster will then return to normal operation. Turning the ignition switch to the Off position or the cluster detecting engine RPM greater than 0 (zero) will stop the self test.