Pinpoint Test Ac: The Led (Light Emitting Diode) Low Beam Malfunction Indicator Or RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On
- Normal Operation and Fault Conditions
See LED Low Beam Malfunction. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the headlamp low beam out message is missing for less than 5 seconds, the IPC defaults the LED low beam malfunction RTT indicator to its last indication state (on or off), based upon the last message received.
If the headlamp low beam out message is missing for 5 seconds or longer, the IPC defaults the LED low beam malfunction RTT indicator off.
Possible Sources
- Low beam lighting concern
- Communication concern
- GWM
- BCM
- IPC
- AC1 DETERMINE THE FAULT CONDITION
- Ignition ON.
- Check the operation of the low beam headlamps.
Do the low beam headlamps operate correctly?
Yes GO to AC2 No REFER to: Headlamps - AC2 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 AC4 No GO to AC3 - AC3 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 AC5 No GO to Pinpoint Test A - AC4 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND
- Access the IPC and control the ALL_LAMPSPID
- Command all lamps on and off while observing the LED low beam malfunction indicator.
Does the LED low beam malfunction indicator illuminate when commanded on and turn off when commanded off?
Yes GO to AC5 No GO to AC7 - AC5 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 GO to AC6 - AC6 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 AC7 - AC7 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.