TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Measure the resistance between ground and the (G4) Fuel Level Signal circuit at the
Fuel Pump Module harness connector.
Is the resistance below 100 ohms?
All
Yes → Repair the short to ground in the (G4) Fuel Level Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 4
4 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance of the (G4) Fuel Level Signal circuit from the Fuel Pump
Module harness connector to the BCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes → Go To 5
No → Repair the open in the (G4) Fuel Level Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
5 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Measure the resistance of the (Z2) Ground circuit from the Fuel Pump Module
harness connector to ground.
Is the resistance below 5.0 ohms?
All
Yes → Go To 6
No → Repair the open in the (Z2) Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
6 WARNING: The fuel system is under a constant pressure even with the
engine off. Before opening the fuel system the fuel pressure must be release.
Relieve the fuel pressure in accordance with the service information.
Remove the Fuel Tank in accordance with the Service Information.
Remove the Fuel Pump Module.
Visually inspect the inside of the Fuel Tank for any obstructions or deformities.
Inspect the Fuel Pump Module Float arm for damage.
Were any problems found?
All
Yes → Repair or replace as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 7
7 If there are no possible causes remaining, view repair. All
Repair
Replace the Fuel Level Sensor.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
177
DRIVEABILITY - NGC
P0461-FUEL LEVEL SENSOR #1 PERFORMANCE — Continued
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