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

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A )

Clear the DTCs with the HDS
Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode
Check for DTCs with the HDS
Is DTC B1175 indicated?

YES -
- With SH-AWD Go to step 4
- Without SH-AWD Go to step 4
NO -Intermittent failure, the fuel level sensor circuit is OK at this time Check for loose or poor connections
Test the fuel gauge sending unit and the secondary fuel gauge sending unit (see FUEL GAUGE SENDING UNIT TEST )
Are the fuel gauge sending units OK?

YES -Reconnect the sending units, then go to step 5

NO -Replace the affected fuel gauge sending unit(s) (see FUEL PUMP/FUEL GAUGE SENDING UNIT REPLACEMENT )
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
Without disconnecting the connectors, measure the voltage between terminals No 2 and No 22 of the gauge control module 32P connector and terminals No 1 and No 3 of the fuel gauge sending unit 4P connector

Fig 1: Measuring Voltage Between Terminals 2 And 22 Of Gauge Control Module 32P Connector And Terminals 1 And 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0 2V?

YES -Replace the gauge control module (see Gauge Control Module Replacement )

NO -Repair the loose connection, high resistance, or open in the PUR or ORN wire between the gauge control module and fuel gauge sending unit
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
Test the fuel gauge sending init and the secondary fuel gauge sending unit (see FUEL GAUGE SENDING UNIT TEST )
Are the fuel gauge sending units OK?

YES -Go to step 9

NO -Replace the affected fuel gauge sending unit(s) (see FUEL GAUGE SENDING UNIT TEST )
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
Disconnect the fuel gauge sending unit 4P connector
Disconnect the gauge control module 32P connector.
Connect secondary fuel gauge sending unit 4P connector terminal No. 3 body ground with a jumper wire.

Fig 2: View Of Fuel Gauge Sending Unit 4P Connector Terminal No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between gauge control module 32P connector terminal No. 2 and body ground.

Fig 3: Checking Continuity Between Gauge Control Module 32P Connector Terminal No 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 14

NO -Repair an open in the wire
Disconnect the secondary fuel gauge sending unit 4P connector (see SECONDARY FUEL GAUGE SENDING UNIT REMOVAL/INSTALLATION )
Connect secondary fuel gauge sending unit 4P connector terminal No. 1 to body ground with a jumper wire.

Fig 4: Connecting Secondary Fuel Gauge Sending Unit 4P Connector Terminal No 1 To Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Check for continuity between gauge control module 32P connector terminal No. 22 and body ground.

Fig 5: Checking Continuity Between Gauge Control Module 32P Connector Terminal No 22 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 17

NO -Repair an open in the wire
Check for continuity between fuel gauge sending unit 4P connector terminal No 3 and secondary fuel gauge sending unit 4P connector terminal No 1

Fig 6: Checking Continuity Between Fuel Gauge Sending Unit 4P Connector Terminal 3 And Secondary Fuel Gauge Sending Unit 4P 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT )

NO -Repair the loose connection, high resistance, or open in the YEL wire between the fuel gauge sending units