DTC U0100: F-CAN Malfunction (Battery Condition Monitor Module - PCM) (103) (Battery Condition Monitor Module) (2014-15)

DTCs (HEV)

1. Problem verification

   - 1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

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

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   U0100 F-CAN Malfunction (Battery Condition Monitor Module - PCM)

   Is DTC U0100 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 battery condition monitor module and the PCM.

2. CAN gateway system DTCs check

   - 1. Check for CAN gateway system DTCs with the HDS.

   DTC Description	DTC
   U0029-00 CAN Gateway F-CAN ch A Buss Off
   U0047-00 CAN Gateway F-CAN ch B Buss Off
   U0056-00 CAN Gateway F-CAN ch C Buss Off
   U3000-49 CAN Gateway Internal Failure

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting.

   NO 

   Go to step 3.

3. F-CAN circuit communication check

   - 1. Select the CAN GATEWAY with the HDS, and select the FUNCTIONAL TESTS.

   - 2. Select the F-CAN BUS CONNECTED UNIT CHECK with the HDS.

   Functional Tests

   Which result is indicated?

   Battery Condition Monitor Module and PCM are Detected

   Intermittent failure, the system is OK at this time.

   Battery Condition Monitor Module (Bus A) is Not Available

   Go to step 4.

   PCM (Bus A) is Not Available

   Go to step 5.

   PCM (Bus B) is Not Available

   Go to step 6

4. Open wire check (F-CAN A lines)

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

   - 2. Do the 12 volt battery terminal disconnection procedure.

   - 3. Disconnect the following connectors.

   CAN gateway 24P connector - Refer to: CAN Gateway Removal and Installation (2014-15)

   Battery condition monitor module connector C (40P) - Refer to: Battery Condition Monitor Module Removal and Installation (2014-15)

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

   Test condition	Vehicle OFF (LOCK) mode Battery condition monitor module connector C (40P): disconnected
   	CAN gateway 24P connector: disconnected
   Test circuit	F-CAN A_H
   Test point 1	CAN gateway 24P connector No. 14 (WHT)
   Test point 2	Battery condition monitor module connector C (40P) No. 30 (WHT)

   Test circuit	F-CAN A_L
   Test point 1	CAN gateway 24P connector No. 15 (RED)
   Test point 2	Battery condition monitor module connector C (40P) No. 10 (RED)

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

   Is there continuity?

   YES 

   The F-CAN A wires are OK. Update the battery condition monitor module if it does not have the latest software, then recheck. If the DTC U0100 goes away and the battery condition monitor module was updated, troubleshooting is complete. If the DTC U0100 goes away and the battery condition monitor module was substituted, replace the original battery condition monitor module - Refer to: Battery Condition Monitor Module Removal and Installation (2014-15) .

   NO 

   Repair an open or poor connection in the F-CAN A wires between the CAN gateway and the battery condition monitor module.

5. Open wire check (F-CAN A lines)

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

   - 2. Jump the SCS line with the HDS.

   Change SCS State

   - 3. Disconnect the following connectors.

   CAN gateway 24P connector - Refer to: CAN Gateway Removal and Installation (2014-15)

   PCM connector A (51P) - Refer to: PCM Removal and Installation (2014-15)

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

   Test condition	Vehicle OFF (LOCK) mode CAN gateway 24P connector: disconnected PCM connector A (51P): disconnected
   Test circuit	F-CAN A_H
   Test point 1	CAN gateway 24P connector No. 14 (WHT)
   Test point 2	PCM connector A (51P) No. 3 (WHT)

   Test circuit	F-CAN A_L
   Test point 1	CAN gateway 24P connector No. 15 (RED)
   Test point 2	PCM connector A (51P) No. 4 (RED)

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

   Is there continuity?

   YES 

   The F-CAN A wires are OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014-15) , then recheck. If the DTC U0100 goes away and the PCM was updated, troubleshooting is complete. If the DTC U0100 goes away and the PCM was substituted, replace the original PCM - Refer to: PCM Removal and Installation (2014-15) .

   NO 

   Repair an open or poor connection in the F-CAN A wires between the CAN gateway and the PCM.

6. Open wire check (F-CAN B lines)

   - 1. Jump the SCS line with the HDS.

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

   - 3. Disconnect the following connectors.

   CAN gateway 24P connector - Refer to: CAN Gateway Removal and Installation (2014-15)

   PCM connector A (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems (2014-15)

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

   Test condition	Vehicle OFF (LOCK) mode
   	CAN gateway 24P connector: disconnected
   	PCM connector A (51P): disconnected
   Test circuit	F-CAN B_L

   Test point 1	CAN gateway 24P connector No. 10 (LT GRN)
   Test point 2	PCM connector A (51P) No. 6 (LT GRN)

   Test circuit	F-CAN B_H
   Test point 1	CAN gateway 24P connector No. 11 (GRN)
   Test point 2	PCM connector A (51P) No. 5 (LT BLU)

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

   Is there continuity?

   YES 

   The F-CAN B wires are OK. Check for poor connections or loose terminals at the CAN gateway and the PCM. Update the PCM if it does not have the latest software, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014-15) , then recheck. If the DTC U0110 goes away and the PCM was updated, troubleshooting is complete. If the DTC U0110 goes away and the PCM was substituted, replace the original PCM - Refer to: PCM Removal and Installation (2014-15) .

   NO 

   Repair an open in the F-CAN B wire between the PCM (A5, A6) and the CAN gateway.