DTC: U0131(Gauge Control Module) (2013 2014 2015 2016)

DTC U0131  : Gauge Control Module Lost Communication With EPS Control Unit

DTC (Gauge Control Module)

NOTE: 

• If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first.
• 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. Press the engine start/stop button to select the OFF mode and then the ON mode.

   -3. Wait for at least 6 seconds.

   -4. Check for DTCs with the HDS.

   DTC Description	DTC
   U0131 Gauge Control Module Lost Communication With EPS Control Unit

   Is DTC U0131 indicated?

   YES 

   Go to step 2.

   NO 

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

2. Fuse check

   -1. Check the following fuse.

   Fuse	No. B24 (7.5 A)
   Location	Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the fuse. If the fuse blows again, repair a short to ground in the No. B24 (7.5 A) fuse circuit.

3. Open wire check (IG1 VSA/ABS line)

   -1. Press the engine start/stop button to select the OFF mode.

   -2. Disconnect the following connector.

   EPS control unit connector A (11P)

   -3. Press the engine start/stop button to select the ON mode.

   -4. Measure the voltage between test points 1 and 2.

   Test condition	ON modeEPS control unit connector A (11P): disconnected
   Test circuit	IG1 VSA/ABS
   Test point 1	EPS control unit connector A (11P) No. 9 (GRY)
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The IG1 VSA/ABS wire is OK. Go to step 4.

   NO 

   Repair an open or high resistance in the wire.

4. Open wire check (GND line)

   -1. Press the engine start/stop button to select the OFF mode.

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

   Test condition	OFF modeEPS control unit connector A (11P): disconnected
   Test circuit	GND
   Test point 1	EPS control unit connector A (11P) No. 1 (BLK)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 5.

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G403).

5. Open wire check (F CAN lines)

   -1. Press the engine start/stop button to select the OFF mode.

   -2. Disconnect the following connector.

   Gauge control module 32P connector

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

   Test condition	OFF modeEPS control unit connector A (11P): disconnectedGauge control module 32P connector: disconnected
   Test circuit	F CAN-H
   Test point 1	Gauge control module 32P connector No. 23 (WHT)
   Test point 2	EPS control unit connector A (11P) No. 10 (WHT)

   Test circuit	F CAN-L
   Test point 1	Gauge control module 32P connector No. 24 (RED)
   Test point 2	EPS control unit connector A (11P) No. 11 (RED)

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

   Is there continuity?

   YES 

   The F CAN wires are OK. Replace the gauge control module .

   NO 

   An open or poor connection in the F CAN wires between the EPS control unit and the gauge control module.