Pinpoint Test G: The Low Fuel Warning Indicator Is Never/Always On: Testing
- G1 CARRY OUT THE INSTRUMENT CLUSTER WARNING LAMPS AND CHIME ACTIVE COMMAND USING THE DIAGNOSTIC TOOL
- Key in ON position.
- Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
- Select the instrument cluster warning lamps and chime active command. Trigger the all lamps active command on and off. Observe the low fuel warning indicator.
- Does the low fuel warning indicator illuminate when triggered on and turn off when triggered off?
- Yes : GO to G2.
- No : GO to G6.
- G2 CHECK THE FUEL GAUGE
- Key in ON position.
- Check the fuel gauge.
- Does the fuel gauge operate correctly?
- Yes : GO to G3.
- No : GO to PINPOINT TEST B to continue diagnosis of the fuel gauge.
- G3 CHECK THE FUEL SENDER RESISTANCE READING NOTE: The fuel sender resistance should be approximately 22 ohms or less when empty (E).
- Key in OFF position.
- Disconnect: Fuel Sender C3104.
- Measure the resistance between the fuel sender C3104 pin 1, component side and the fuel sender C3104 pin 2, component side.
- Is the resistance within specifications?
- Yes : GO to G4.
- No : GO to G5.
- G4 CHECK THE REMOTE FUEL SENDER RESISTANCE READING NOTE: The remote fuel sender resistance should be approximately 30 ohms or less when empty (E).
- Disconnect: Remote Fuel Sender C3270.
- Measure the resistance between the remote fuel sender C3270 pin 1, component side and the remote fuel sender C3270 pin 4, component side.
- Is the resistance within specifications?
- Yes : CONNECT the fuel sender and the remote fuel sender. GO to G6.
- No : GO to G5.
- G5 INSPECT THE FUEL TANK
- Visually inspect the fuel tank for any damage or deformation.
- Is the fuel tank OK?
- Yes : INSTALL a new fuel sender or remote fuel sender as necessary. REFER to FUEL TANK & LINES . TEST the system for normal operation.
- No : INSTALL a new fuel tank. REFER to FUEL TANK & LINES . TEST the system for normal operation.
- G6 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect all the instrument cluster connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all the instrument cluster connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.