Diagnostic Procedure

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.

DIAGNOSTIC PROCEDURE - 4WD INDICATOR INACCURATE

TEST	ACTION	APPLICABILITY
1	NOTE: With the DRBIII®, ensure that the Instrument Cluster is configured for the correct transfer case before proceeding with this test. With the DRBIII®, read DTCs.Does the DRBIII® display any 4WD Mode Sensor DTCs?Yes --> Refer to the DRIVEABILITY category and perform the appropriate symptom.No --> Go To 2	All
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? Yes --> Go To 3 No --> Replace and configure the Instrument Cluster in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .	All
3	Turn the ignition on. With the DRBIII® in Sensors, read the T-Case Position while moving the transfer case shift lever through all of the positions. The DRBIII® should display the following values: 4WD Lo: 0.96 - 1.35 volts Neutral: 2.39 - 2.76 volts Full Time: 3.2 - 3.5 volts Part Time: 3.7 - 4.0 volts 2WD: 4.17 - 4.45 volts Is the Transfer Case Position voltage within the specified ranges? Yes --> The condition is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring harness and connector terminals. No --> Replace the Transfer Case Position Sensor in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 2 .	All