DTC P0AFA (492)

DTC P0AFA  : HV Battery System Voltage Low

NOTE:  Before you troubleshoot, review the general troubleshooting information .

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 System Voltage Low

   Is DTC P0AFA indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. 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. E5

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the No. E5 fuse. Also check for a short to ground on the No. E5 fuse circuit if needed.

3. Relay check

   -1. Remove the service plug and the IPU cover .

   -2. Remove the IGHLDB relay .

   -3. Test the IGHLDB relay .

   Is the relay OK?

   YES 

   Go to step 4.

   NO 

   Replace the IGHLDB relay.

4. Open wire check (+B_IMA1/+B_IGB line)

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

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

   Test condition	Vehicle OFF (LOCK) mode
   	IGHLDB relay: disconnected
   Test point 1	IGHLDB relay 4P socket (female terminal) No. 2, No. 3:
   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_IMA1/+B_IGB wire between the No. E5 fuse and IGHLDB relay.

5. Open wire check (IGHLDB line)

   -1. Disconnect the following connector.

   Battery condition monitor module connector E (32P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   	IGHLDB relay: disconnected
   Test point 1	IGHLDB relay 4P socket (female terminal) No. 4:
   Test point 2	Battery condition monitor module connector E (32P) No. 19

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

   Is there 1.0 Ω or less?

   YES 

   Go to step 6.

   NO 

   Repair an open in the IGHLDB wire between IGHLDB relay and the battery condition monitor module (E19).

6. Open wire check (IGB line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   	IGHLDB relay: disconnected
   Test point 1	IGHLDB relay 4P socket (female terminal) No. 1:
   Test point 2	Battery condition monitor module connector E (32P) No. 2

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

   Is there 1.0 Ω or less?

   YES 

   The IGB wire is OK. Replace the battery condition monitor module .

   NO 

   Repair an open in the IGB wire between IGHLDB relay and the battery condition monitor module (E2).