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 - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC ChecksBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not CommunicatingBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode C - No DTCs and Output Won't Shut OFFBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode D - No DTCs and Output Won't Turn ON .

• 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 gauge sending unit 4P connector

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

  Terminal A	Fuel gauge sending unit 4P connector No. 2
  Terminal B	Body ground

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

  4. Remove the No. A29 (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 4.

  NO 

  Go to step 3.

• 3. Open wire check (FUEL GAGE+ line):

  1. Measure the voltage between test points 1 and 2.

  Test condition	Vehicle ON mode Fuel gauge sending unit 4P connector: disconnected
  Test point 1	Gauge control module connector A (32P) No. 22
  Test point 2	Body ground

  Is there battery voltage?

  YES 

  Repair an open or high resistance in the wire.

  NO 

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

• 4. Open wire check (FUEL GAGE- line):

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

  2. Disconnect the following connector.

  Gauge control module connector A (32P)

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

  Test condition	Vehicle OFF (LOCK) mode Fuel gauge sending unit 4P connector: disconnected Gauge control module connector A (32P): disconnected
  Test point 1	Gauge control module connector A (32P) No. 21
  Test point 2	Fuel gauge sending unit 4P connector No. 4

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

  Is there continuity?

  YES 

  The FUEL GAGE- wire is OK. Replace the fuel gauge sending unit .

  NO 

  Repair an open or high resistance in the wire.