DTC Troubleshooting: B1175 (2WD)

DTC B1175  : 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 .

1. Problem verification

   -1. Clear the DTCs with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode.

   -3. Turn the vehicle to the ON mode, and wait more than 30 seconds.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   B1175 Fuel level sensor (Fuel gauge sending unit) circuit malfunction

   Is DTC B1175 indicated?

   YES 

   Go to step 2.

   NO 

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

2. Open wire check (FUEL GAUGE+, FUEL GAUGE- lines)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connectors.

   Gauge control module 32P connector Fuel tank unit 4P connector

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

   Test condition	Vehicle OFF (LOCK) mode Gauge control module 32P connector: disconnected Fuel tank unit 4P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 11
   Test point 2	Fuel tank unit 4P connector No. 2

   Test point 1	Gauge control module 32P connector No. 18
   Test point 2	Fuel tank unit 4P connector No. 4

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The FUEL GAUGE+ and FUEL GAUGE- wires are OK. Go to step 3.

   NO 

   Repair an open or high resistance in the wire.

3. Fuel gauge sending unit check

   -1. Test the fuel gauge sending unit .

   Is the fuel gauge sending unit OK?

   YES 

   Replace the gauge control module .

   NO 

   Replace the fuel gauge sending unit .