DTC U0100: Power Control Unit Lost Communication With PCM (2013-15)

DTC (Power Control Unit)

1. Problem verification:

   Clear the DTCs with the HDS.

   Clear DTCs

   - 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
   U0100 Power Control Unit Lost Communication With PCM

   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):

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

   - 2. Jump the SCS line with HDS.

   SCS Short

   - 3. Disconnect the following connectors.

   Power control unit connector C (36P) PCM connector A (49P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2013-15), or How to Troubleshoot the A/T System (2013-15)

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

   Test condition	OFF modePower control unit connector C (36P): disconnectedPCM connector A (49P): disconnected
   Test circuit	F CAN-H
   Test point 1	Power control unit connector C (36P) No. 21 (WHT)
   Test point 2	PCM connector A (49P) No. 19 (WHT)

   Test circuit	F CAN-L
   Test point 1	Power control unit connector C (36P) No. 20 (RED)
   Test point 2	PCM connector A (49P) No. 20 (RED)

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

   Is there continuity?

   YES 

   The F CAN wires are OK. Replace the power control unit .

   NO 

   An open or poor connection in the F CAN wires between the PCM and the power control unit.