Pinpoint Test Am: The Charging System RTT (RECONFIGURABLE Telltale) Is Never Or Always On
- Normal Operation and Fault Conditions
See Charging System RTT. REFER to: Message Center - 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 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 on.
Possible Sources
- Charging system concern
- Communication concern
- GWM concern
- IPC
- AM1 CHECK THE MESSAGE CENTER OPERATION
- Ignition OFF.
- Remove BJB fuse 64 (5A).
- Ignition ON.
- Monitor the message center display.
Does the message center display the power steering malfunction warning?
Yes GO to AM2 No GO to Pinpoint Test AO - AM2 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 DTC Chart: Instrument Panel Cluster (IPC) . No GO to AM3 - AM3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to: Communications Network No GO to AM4 - AM4 CHECK THE CHARGING SYSTEM OPERATION
- Check the charging system operation.
Does the charging system operate correctly?
Yes If the charging system RTT is never on, the system is operating correctly at this time. If the charging system RTT is always on, DIAGNOSE all BCM Diagnostic Trouble Codes (DTCs). REFER to: Body Control Module (BCM) No REFER to the appropriate Battery and Charging System article.