Code No. P0A10: DCDC converter (2)


AUXILIARY BATTERY CHARGING CONTROL CIRCUIT





OPERATION



DIAGNOSIS CODE SET CONDITIONS



  • When the DC-DC converter driving state continues for 2 seconds or longer while the DC-DC converter stop is underway, the diagnosis code No. P0A10 will be set.

PROBABLE CAUSES



  • Damaged wiring harness or connector(s)
  • Malfunction of the DC-DC converter
  • Malfunction of the EV-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: E-03 on board charger/DC-DC converter connecter, C-111 EV-ECU connector

Q. Is the check result normal?
Go to Step 2.
Repair the damaged connector.

STEP 2. Check the wiring harness between E-03 on board charger/DC-DC converter connector terminal No. 4, 11 and C-111 EV-ECU connector terminal No. 116, 127.
Check the signal lines for short to power supply.

Q. Is the check result normal?
Go to Step 3.
Repair the wiring harness.

STEP 3. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the on board charger/DC-DC converter. (Refer to .) Then go to Step 4.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the EV-ECU. (Refer to .) Then go to Step 5.
The diagnosis is complete.

STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?
Return to Step 1.
The diagnosis is complete.