DTC P0AFA (641) (Battery Charge Control Module)

DTC P0AFA  : HV Battery Charging System Voltage Low

DTC (Electric Powertrain)

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. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P0AFA HV Battery Charging System Voltage Low

   Is DTC P0AFA indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the No. D8 fuse, the relay circuit board, and the battery charge control module. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

2. Fuse check

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

   -2. Check the following fuse.

   Fuse

   No. D8

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the No. D8 fuse. Also check for a short to ground on the No. D8 fuse circuit if needed.

3. IGC relay circuit check

   -1. Remove the relay circuit board .

   -2. Test the IGC relay circuit .

   Is the IGC relay circuit OK?

   YES 

   Go to step 4.

   NO 

   Replace the relay circuit board .

4. Open wire check (+B IGC line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Relay circuit board: removed
   Test point 1	Relay circuit board connector B (14P) (female terminals) No. 13:
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   Go to step 5.

   NO 

   Repair an open in the +B IGC wire between the No. D8 fuse and the relay circuit board.

5. Open wire check (IGC RLY CL- line)

   -1. Do the 12 volt battery terminal disconnection procedure .

   -2. Disconnect the following connector.

   Battery charge control module connector A (36P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Relay circuit board: removed
   	Battery charge control module connector A (36P): disconnected
   Test point 1	Relay circuit board connector C (10P) (female terminals) No. 1:
   Test point 2	Battery charge control module connector A (36P) No. 30

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

   Is there continuity?

   YES 

   Go to step 6.

   NO 

   Repair an open in the IGC RLY CL- wire between the relay circuit board and the battery charge control module.

6. Open wire check (IGC line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Relay circuit board: removed
   	Battery charge control module connector A (36P): disconnected
   Test point 1	Relay circuit board connector C (10P) (female terminals) No. 6:
   Test point 2	Battery charge control module connector A (36P) No. 17

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

   Is there continuity?

   YES 

   Check for any authorized service information related to the DTC(s) or symptoms you are troubleshooting or substitute a known-good battery charge control module .

   NO 

   Repair an open in the IGC wire between the relay circuit board and the battery charge control module.