B1176

DTC Troubleshooting: B1176

DTC B1176:

Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Short

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 B1176 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for worn/missing insulation or an internal short in the wire.

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

6. Disconnect the fuel tank unit 5P connector.

7. Clear the DTCs with the HDS.

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

9. Wait for at least 30 seconds.

10. Check for DTCs with the HDS.

Is DTC B1176 indicated?

YES -

Go to step 11.

NO -

Replace the fuel gauge sending unit Fuel Pump/Fuel Gauge Sending Unit Replacement.

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

12. Disconnect gauge control module connector A (20P).

13. Check for continuity between gauge control module connector A (20P) terminal No. 19 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire between the gauge control module and the fuel tank unit.

NO -

Go to step 14.

14. Disconnect the secondary fuel gauge sending unit 5P connector.

15. Check for continuity between fuel tank unit 5P connector terminals No. 1 and No. 2.





Is there continuity?

YES -

Repair a short in the wires.

NO -

Go to step 16.

16. Reconnect gauge control module connector A (20P).

17. Reconnect the fuel tank unit 5P connector.

18. Clear the DTCs with the HDS.

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

20. Wait for at least 30 seconds.

21. Check for DTCs with the HDS.

Is DTC B1176 indicated?

YES -

Go to step 22.

NO -

Replace the secondary fuel gauge sending unit Secondary Fuel Gauge Sending Unit Replacement.

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

23. Disconnect the fuel tank unit 5P connector.

24. Check for continuity between fuel tank unit 5P connector terminal No. 1 and body ground.





Is there continuity?

YES -

Repair a short to ground in the wire between the fuel tank unit and the secondary fuel gauge sending unit.

NO -

Go to step 25.

25. Disconnect gauge control module connector A (20P).

26. Check for continuity between secondary fuel gauge sending unit 5P connector terminals No. 1 and No. 2.





Is there continuity?

YES -

Repair a short in the wires.

NO -

Replace the gauge control module Service and Repair.