Pinpoint Test AF : The Low Fuel Warning Indicator Or RTT (RECONFIGURABLE Telltale) Is Never Or Always On
- Normal Operation and Fault Conditions
See Low Fuel. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
Possible Sources
- Communication concern
- Fuel gauge concern
- PCM
- GWM
- IPC
- AF1 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 AF3 No GO to AF2 - AF2 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 AF4 No GO to Pinpoint Test A - AF3 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL
- Ignition ON.
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- Access the IPC and control the W_LOW_FUELPID
- Command the low fuel warning indicator on then off while observing the low fuel warning indicator.
Does the low fuel warning indicator turn on when commanded on and turn off when commanded off?
Yes GO to AF4 No Refer to IPC Guided Routine Testing . - AF4 VERIFY THE OPERATION OF THE FUEL GAUGE
- Ignition ON.
- Verify the fuel gauge operates correctly and there are no customer concerns with the fuel gauge operation.
Does the fuel gauge operate correctly without any customer concerns related to fuel gauge indication?
Yes GO to AF5 No For base and mid-level IPC, GO to Pinpoint Test E For high-level IPC, GO to Pinpoint Test B - AF5 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the PCM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to the Master DTC Chart. No GO to AF6 - AF6 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 AF7 - AF7 CONFIRM THE CURRENT FUEL LEVEL
- Enter the Dealer Test Mode. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
- Scroll to the
Inst Fuel1 display.
Does the FLPM (second value) indicate 104 or less with an administrator key or between 104 and 164 with a MyKey® programmed key?
Yes If the low fuel RTT warning indicator is always on, the system is operating correctly at this time based on the current fuel level. If the low fuel RTT warning indicator is never on, Refer to IPC Guided Routine Testing . No If the low fuel warning indicator is always on, Refer to IPC Guided Routine Testing . If the low fuel warning indicator is never on, the system is operating correctly at this time based on the current fuel level.