90A5

90A5-FUEL TANK LEVEL SENSOR CIRCUIT LOW





For a complete wiring diagram, Refer to the Wiring Information Electrical Diagrams.






1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Is the DTC active?

Yes

- Go To

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.

2. FUEL PUMP MODULE
1. Turn the ignition off.
2. Disconnect the Fuel Pump Module.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Is the DTC active?

Yes

- Go To 3

No

- Replace the Fuel Pump Module.
- Perform the BODY VERIFICATION TEST. Verification Tests.

3. FUEL TANK LEVEL SENSOR SIGNAL CIRCUIT SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C9 harness connector.
3. Measure the resistance between ground and the Fuel Tank Level Sensor Signal circuit.

Is the resistance below 10K ohms?

Yes

- Repair the Fuel Tank Level Sensor Signal circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Verification Tests.

No

- Replace the BCM.
- Perform the BODY VERIFICATION TEST. Verification Tests.