Pinpoint Test Ag: 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

AG1 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 AG3

No GO to AG2

AG2 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 AG4

No GO to Pinpoint Test A

AG3 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 AG4

No GO to AG8

AG4 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 AG5

No For base and mid-level IPC, GO to Pinpoint Test E For high-level IPC, GO to Pinpoint Test B

AG5 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 AG6

AG6 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 AG7

AG7 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, GO to AG8

No	If the low fuel warning indicator is always on, GO to AG8 If the low fuel warning indicator is never on, the system is operating correctly at this time based on the current fuel level.

AG8 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.