Pinpoint Test AK: The OVERSPEED Warning RTT (RECONFIGURABLE Telltale) Indicator Is Never Or Always On (GSO Member Countries)
- Normal Operation and Fault Conditions
See Overspeed Warning (GSO Member Countries). REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the vehicle speed message is missing or invalid for less than 5 seconds, the IPC defaults the overspeed warning RTT indicator to its last state (on or off) based upon the last known good message received.
If the vehicle speed message is missing for 5 seconds or longer, the IPC defaults the overspeed warning RTT indicator off.
Possible Sources
- Speedometer indication concern
- IPC configuration concern
- IPC
- AK1 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 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 AK2 No GO to Pinpoint Test A - AK2 CHECK THE SPEEDOMETER OPERATION
- Verify the speedometer operates.
Does the speedometer operate?
Yes GO to AK3 No GO to Pinpoint Test D - AK3 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 CONFIRM the vehicle was built for the GSO member market. If the vehicle was not built for the GSO member market, the IPC is functioning correctly. If the vehicle was built for the GSO member market, PERFORM the PMI procedure as directed by the diagnostic scan tool. REFER to: Module Configuration - System Operation and Component Description .