Pinpoint Test U: The Front Or Rear Eld (Electronic Locking Differential) RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On
- Normal Operation and Fault Conditions
See ELD - Front or Rear. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the front differential lock indicator request or rear differential lock indicator request message is missing for less than 5 seconds, the IPC defaults the front or rear ELDRTT indicator to its last indication state (on or off), based upon the last message received.
If the front differential lock indicator request or rear differential lock indicator request message is missing for 5 seconds or longer, the IPC defaults the front or rear ELDRTT indicator off.
Possible Sources
- Communication concern
- Message center concern
- Locking differential concern
- GWM concern
- IPC
- U1 CHECK THE MESSAGE CENTER OPERATION
- Ignition ON.
- Close all doors, tailgate and the hood.
- Clear all message center warnings by pressing the OK button for each warning present.
- Monitor the door ajar RTT indicator.
- Open the driver door.
- Clear the message center popup warning.
- Monitor the door ajar RTT indicator.
Is the door ajar RTT indicator off with the door closed, and on with the door open?
Yes GO to U2 No GO to Pinpoint Test A - U2 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to the Diagnostic Trouble Code (DTC) Chart . No GO to U3 - U3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CM DTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to: Controller Area Network (CAN) Module Communications Network . No DIAGNOSE the ELD. REFER to the appropriate Four-Wheel Drive Systems service information .