Pinpoint Test Ab: The Lights On 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 indicator or 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 indicator or RTT indicator off.
Possible Sources
- Exterior lighting concern
- Communication concern
- GWM
- BCM
- IPC
- AB1 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 AB2 No REFER to: Parking, Rear and License Plate Lamps - AB2 IDENTIFY THE IPC (INSTRUMENT PANEL CLUSTER) LEVEL
- Determine if the vehicle is equipped with a base IPC. REFER to: Instrument Panel Cluster (IPC) - Overview
Is the vehicle equipped with a base IPC?
Yes GO to AB4 No GO to AB3 - AB3 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 AB5 No GO to Pinpoint Test A - AB4 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- Access the IPC and control the SIDELIGHT_LMPPID
- Command the lights on indicator on and off while observing the indicator.
Does the lights on indicator illuminate when commanded on and turn off when commanded off?
Yes GO to AB5 No GO to AB7 - AB5 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. No GO to AB6 - AB6 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 the Master DTC Chart. - AB7 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION
- Ignition OFF.
- Disconnect and inspect the IPC connector.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the IPC connector. Make sure it seats and latches correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. REFER to: Instrument Panel Cluster (IPC) No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.