Pinpoint Test T : The Lights On RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On
- Normal Operation and Fault Conditions
See Lights On. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the park lamp status message is missing for less than 5 seconds, the IPC defaults the lights on RTT indicator to its last indication state (on or off), based upon the last message received.
If the park lamp status message is missing for 5 seconds or longer, the IPC defaults the lights on RTT indicator off.
Possible Sources
- Exterior lighting concern
- Communication concern
- GWM
- BCM
- IPC
- T1 CHECK THE PARKING LAMPS OPERATION
- Place the headlamp switch in the PARKLAMP position.
- Ignition ON.
- Observe the parking lamps.
Do the parking lights operate correctly?
Yes GO to T2 No REFER to: Parking, Rear and License Plate Lamps . - T2 CHECK THE MESSAGE CENTER OPERATION
- Ignition ON.
- Close all doors, liftgate and hood.
- Clear all message center warnings by pressing the OK button for each warning present.
- Monitor the door ajar RTT warning indicator.
- Open the driver door.
- Clear the message center popup warning.
- Monitor the door ajar RTT warning indicator.
Is the door ajar RTT warning indicator off with the door closed, and on with the door open?
Yes GO to T3 No GO to Pinpoint Test A - T3 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Using a diagnostic scan tool, perform the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to the IPC DTC Chart. Refer to Diagnostic Trouble Code (DTC) Chart No GO to T4 - T4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (DTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to: Communications Network . No DIAGNOSE all BCM Diagnostic Trouble Codes (DTCs). REFER to: Body Control Module (BCM) .