Pinpoint Test Z: The Hill Start Assist Indicator Or RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On
- Normal Operation and Fault Conditions
See Hill Start Assist. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the hill start assist status message is missing for less than 5 seconds, the IPC defaults the hill start assist indicator or RTT indicator to its last indication state (on or off), based upon the last message received.
If the hill start assist status message is missing for 5 seconds or longer, the IPC defaults the hill start assist indicator or RTT indicator off.
Possible Sources
- Communication concern
- Message center concern
- Hill start assist system concern
- ABS concern
- GWM concern
- IPC
- Z1 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 Z3 No GO to Z2 - Z2 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 Z4 No GO to Pinpoint Test A - Z3 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 W_HILL_STRTPID
- Command the hill start assist indicator on and off while observing the indicator.
Does the hill start assist indicator illuminate when commanded on and turn off when commanded off?
Yes GO to Z4 No GO to Z7 - Z4 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Using a diagnostic scan tool, perform the IPC self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to the IPC DTC Chart. No GO to Z5 - Z5 PERFORM THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST
- Using a diagnostic scan tool, perform the ABS module self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the ABS module self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to:Anti-Lock Brake System (ABS) And Stability Control No GO to Z6 - Z6 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: Communications Network No GO to Z7 - Z7 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.