DTC P0AA3 (128)

DTC P0AA3  : HV Battery Sub Contactor Circuit

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, and wait 120 seconds.

   -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
   P0AA3 HV Battery Sub Contactor Circuit

   Is DTC P0AA3 indicated?

   YES 

   The failure is duplicated. 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. Determine possible failure area (short in CNTN line, others)

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

   -2. Remove the service plug and the IPU cover .

   -3. Disconnect the following connector.

   Battery condition monitor module connector E (32P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 5
   Test point 2	Body ground

   Is there continuity?

   YES 

   Go to step 3.

   NO 

   Go to step 4.

3. Shorted wire check (CNTN line)

   -1. Disconnect the following connector.

   Junction board 4P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Battery condition monitor module connector E (32P): disconnected
   	Junction board 4P connector: disconnected
   Test point 1	Battery condition monitor module connector E (32P) No. 5
   Test point 2	Body ground

   Is there 1 MΩ or more?

   YES 

   The CNTN wire is OK. Replace the junction board .

   NO 

   Repair a short in the CNTN wire between the junction board and the battery condition monitor module (E5).

4. Junction board check

   -1. Remove the junction board .

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

   Test condition	Vehicle OFF (LOCK) mode
   Test point 1	Junction board terminal (A)
   Test point 2	Junction board terminal (B)

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

   Is there continuity?

   YES 

   There is a failure in the high voltage sub contactor. Replace the junction board .

   NO 

   Replace the battery condition monitor module .