4WD Indicator Inaccurate

Possible Causes:

• 4WD Mode Sensor DTC Present
• Intermittent Condition
• Transfer Case Position Sensor
• Instrument Cluster

Testing

NOTE: With the DRBIII(R), ensure that the Instrument Cluster is configured for the correct transfer case before proceeding with this test.
1. With the DRBIII(R), read DTCs. Does the DRBIII(R) display any 4WD Mode Sensor DTCs? If yes, see SELF-DIAGNOSTICS - LIBERTY article in ENGINE PERFORMANCE. If no, go to next step.
2. Perform the Instrument Cluster Self Test. Depress and hold the Trip Odometer reset button while turning the ignition from the off to the on position. Did the 4WD indicator in question illuminate? If yes, go to next step. If no, replace the Instrument Cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION in ANALOG INSTRUMENT PANELS - LIBERTY article. Perform BODY VERIFICATION TEST  .
3. Turn the ignition on. With the DRBIII(R) in Sensors, read the T-Case Position while moving the transfer case shift lever through all of the positions. See TRANSFER CASE/SHIFT LEVER POSITION  table. Is the Transfer Case Position voltage within the specified ranges? If yes, the condition is not present at this time. Monitor DRBIII(R) parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins (TSB) that may apply. Visually inspect the related wiring harness and connector terminals. If no, replace the Transfer Case Position Sensor in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER-2  .