Honda HR-V: DTC B1175 (AWD) Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Malfunction

DTC (Gauge Control Module)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks.

1. Problem verification.

1. Check the fuel gauge.

Does the gauge move to the empty position and the low fuel indicator blink?

YES

Go to step 2.

NO

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Fuel gauge operation check.

1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.

Fuel tank unit 4P connector

3. Connect terminals A and B with a 2 Ω resistor and a jumper wire.

4. Remove the No. B21 (10 A) fuse from the under-hood fuse/relay box for at least 10 seconds, then reinstall it.
5. Turn the vehicle to the ON mode.
6. Check the fuel gauge.

Does the gauge move to the full position?

YES

Go to step 5.

NO

Go to step 3.

3. Open wire check (FUEL GAUGE+ line).

Measure the voltage between test points 1 and 2.

Is there battery voltage?

YES

Repair an open or high resistance in the wire.

NO

The FUEL GAUGE+ wire is OK. Replace the gauge control module.

4. Open wire check (FUEL GAUGE1-2 line).

1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.

Secondary fuel gauge sending unit 4P connector

3. Check for continuity between test points 1 and 2.

Is there continuity?

YES

The FUEL GAUGE1-2 wire is OK. Go to step 5.

NO

Repair an open or high resistance in the wire.

5. Open wire check (FUEL GAUGE- line).

1. Disconnect the following connector.

Gauge control module connector A (32P)

2. Check for continuity between test points 1 and 2.

Is there continuity?

YES

The FUEL GAUGE- wire is OK. Go to step 6.

NO

Repair an open or high resistance in the wire.

6. Fuel tank unit test.

Do the fuel gauge sending unit test - Refer to: Fuel Gauge Sending Unit Test (2WD), or Fuel Gauge Sending Unit Test (AWD).

Is the fuel tank unit OK?

YES

Go to step 7.

NO

Faulty fuel gauge sending unit, replace fuel tank unit - Refer to: Fuel Tank Unit Removal and Installation (2WD), or Fuel Tank Unit Removal and Installation (AWD).

7. Secondary fuel gauge sending unit test.

Do the secondary fuel gauge sending unit test - Refer to: Fuel Gauge Sending Unit Test (2WD), or Fuel Gauge Sending Unit Test (AWD).

Is the secondary fuel gauge sending unit OK?

YES

Replace the gauge control module.

NO

Replace the secondary fuel gauge sending unit.

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