Diagnostic Procedure
DIAGNOSTIC INFORMATION AND PROCEDURES CHART (SPEEDOMETER INACCURATE OR INOPERATIVE)
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | With the DRBIII®, read DTCs. Are any Powertrain DTCs present? Yes --> Refer to DRIVEABILITY for the related symptom(s). No --> Go To 2 |
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| 2 | With the DRBIII®, ensure that the Instrument Cluster is correctly configured for Tire Size, Axle Type, and Transfer Case Type. Are the Instrument Cluster configurations correct? Yes --> Go To 3 No --> Using the DRBIII®, select Miscellaneous, Configure Cluster for the correct Tire Size, Axle Type, and Transfer Case Type. With the DRBIII®, erase DTCs. |
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| 3 | Turn the ignition off. Perform the INSTRUMENT CLUSTER SELF TEST . Press and hold the Trip Reset button. Turn the ignition on. Observe the Speedometer during the self test.
NOTE:
The self test can also be initiated using the DRBIII®. The Speedometer should pause at the following calibration points: Cal Point 1: 20 MPH (40km/h Canada/BUX) (40 MPH Aus/Japan) Cal Point 2: 55 MPH (80 km/h Canada/BUX) (80 MPH Aus/Japan) Cal Point 3: 75 MPH (120 km/h Canada/BUX) (120 MPH Aus/Japan) Did the Speedometer pause at the correct calibration points? Yes --> The condition is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins (TSBs) that may apply. Visually inspect the related wiring harness and connector terminals. No --> Replace and configure the Instrument Cluster in accordance with the Service Information. |
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