B1175

DTC Troubleshooting: B1175

DTC B1175: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Open

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Wait for at least 30 seconds.

4. Check for DTCs with the HDS.

Is DTC B1175 indicated?
YES - Go to step 5.

NO - Intermittent failure, the fuel level sensor circuit is OK at this time. Check for loose or poor connections.


5. Turn the ignition switch to LOCK (0).

6. Disconnect the fuel tank unit 5P connector and the gauge control module (tach) 36P connector.

7. Connect fuel tank unit 4P connector terminals No. 1 and No. 3 to body ground with jumper wires.






8. Check for continuity between gauge control module (tach) 36P connector terminals No. 32 and No. 33 and body ground individually.

Is there continuity?
YES - Go to step 9.

NO - Repair open in the wire between the gauge control module (tach) and the fuel tank unit.






9. Do the fuel gauge sending unit test, R18A1 engine, Testing and Inspection K20Z3 engine. Testing and Inspection

Is the fuel gauge sending unit OK?
YES - Replace the gauge control module (tach). Gauge Control Module Replacement

NO - Replace the fuel tank unit, R18A1 engine, Fuel Tank Unit Removal and Installation K20Z3 engine. Fuel Tank Unit Removal and Installation