Pinpoint Test Q: The Charging System RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On
- Normal Operation and Fault Conditions
See Charging System RTT Indicator. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the battery low state of charge message is missing for less than 5 seconds, the IPC defaults the charging system RTT indicator to the last indication state (on or off), based upon on the last message received.
If the battery low state of charge message is missing for 5 seconds or longer, the IPC defaults the charging system RTT indicator on.
Possible Sources
- Charging system concern
- Message center concern
- BCM concern
- GWM concern
- IPC
- Q1 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 Q2 No GO to Pinpoint Test A - Q2 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 Diagnostic Trouble Code (DTC) Chart . No GO to Q3 - Q3 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 GO to Q4 - Q4 CHECK THE CHARGING SYSTEM OPERATION
- Check the charging system operation.
Does the charging system operate correctly?
Yes If the charging system warning indicator is never on, the system is operating correctly at this time. If the charging system warning indicator is always on, DIAGNOSE all BCM Diagnostic Trouble Codes (DTCs). REFER to the Diagnostic Trouble Code (DTC) Chart . No For 2.3L, REFER to: Charging System - 2.3L EcoBoost (199kW/270PS) . . For 2.7L, REFER to: Charging System - 2.7L EcoBoost (238kW/324PS) .