DTC P0463

DTC P0463  : Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Wait 30 seconds.

   -6. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage

   Is DTC P0463 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the gauge control module and the fuel tank unit. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

2. Open wire check (FUEL_GAUGE- line)

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

   -2. Remove the gauge control module .

   -3. Disconnect the following connector.

   Fuel tank unit 4P connector

   Gauge control module connector A (32P)

   -4. Connect terminals A and B with a jumper wire.

   Terminal A	Fuel tank unit 4P connector (female terminals) No. 4:
   Terminal B	Body ground

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

   -5. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Fuel tank unit 4P connector: disconnected
   	Fuel tank unit 4P connector No. 4: jumped to body ground
   	Gauge control module connector A (32P): disconnected
   Test point 1	Gauge control module connector A (32P) No. 21
   Test point 2	Body ground

   Is there 1.0 Ω or less?

   YES 

   Go to step 3.

   NO 

   Repair an open in the FUEL_GAUGE- wire between the gauge control module and the fuel tank unit.

3. Open wire check (FUEL_GAUGE+ line)

   -1. Remove the jumper wire from the fuel tank unit 4P connector.

   -2. Connect terminals A and B with a jumper wire.

   Terminal A	Fuel tank unit 4P connector (female terminals) No. 2:
   Terminal B	Body ground

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

   -3. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Fuel tank unit 4P connector: disconnected
   	Fuel tank unit 4P connector No. 2: jumped to body ground
   	Gauge control module connector A (32P): disconnected
   Test point 1	Gauge control module connector A (32P) No. 22
   Test point 2	Body ground

   Is there 1.0 Ω or less?

   YES 

   Go to step 4.

   NO 

   Repair an open in the FUEL_GAUGE+ wire between the gauge control module and the fuel tank unit.

4. Fuel gauge sending unit check

   -1. Remove the jumper wire from the fuel tank unit 4P connector.

   -2. 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 .