DTC U0100 (Gauge Control Module) (2014 2015)

DTC U0100  : Gauge control module lost communication with ENG/AT

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 - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2014 2015 2016) .

1. Problem verification

   - 1. Clear the DTCs with the HDS.

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

   - 3. Wait for at least 6 seconds.

   - 4. Check for DTCs with the HDS.

   DTC Description	DTC
   U0100 Gauge control module lost communication with ENG/AT

   Is DTC U0100 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 (F-CAN lines)

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

   - 2. Jump the SCS line with the HDS.

   SCS short

   - 3. Disconnect the following connectors.

   PCM connector A (51P) - Refer to: PCM Removal and Installation (2014 2015)

   Gauge control module connector A (32P)

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

   Test condition	Vehicle OFF (LOCK) mode PCM connector A (51P): disconnected Gauge control module connector A (32P): disconnected
   Test circuit	F-CAN_H
   Test point 1	Gauge control module connector A (32P) No. 27 (WHT)
   Test point 2	PCM connector A (51P) No. 9 (WHT)

   Test circuit	F-CAN_L
   Test point 1	Gauge control module connector A (32P) No. 28 (BLK)
   Test point 2	PCM connector A (51P) No. 10 (BLK)

   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 PCM and the gauge control module.