Code No. P0AE7: Charging contactor (high input)



caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.

TROUBLE JUDGEMENT


The PHEV-ECU stores diagnosis code No. P0AE7 when the drive and pre-charge circuits of the charging contactor are defective.

PROBABLE CAUSES



  • Damaged harness or connector
  • Malfunction of charging contactor
  • Malfunction of PHEV-ECU

DIAGNOSIS PROCEDURE


STEP 1. Check the signal line for open circuit and short to power supply (PHEV-ECU connector and drive battery connector).



  • Check the wiring harness between PHEV-ECU (CNTP terminal) connector and the drive battery connector.

Q. Is the check result normal?

Go to Step 2.
Repair the connector or wiring harness.

STEP 2. Check the CNTP wire at the drive battery connector for short to power supply.


Disconnect the connector and check for short to power supply.

Q. Is the check result normal?

Go to Step 3.
Go to Step 4.

STEP 3. Check whether the diagnosis code is stored again.


Recheck if the diagnosis code is stored.
(1)Erase the diagnosis code.
(2)Turn on the power supply mode of the electric motor switch to make the READY (ready to drive) indicator illuminate.
(3)Check if the diagnosis code is stored.

Q. Is the diagnosis code stored?

Replace the PHEV-ECU (Refer to ). Then go to Step 6.
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).

STEP 4. Charging contactor check


Disassemble the drive battery and check the contactor.

Q. Is the check result normal?

Go to Step 5.
Replace the contactor.

STEP 5. Check the signal line (CNTP) for open circuit and short to power supply (drive battery connector and charging contactor).



  • Check the wiring harness between drive battery connector terminal No.1 and the charging contactor terminal No.4.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
Repair the connector or wiring harness. Then go to Step 6.

STEP 6. Check whether the diagnosis code is stored again.


Recheck if the diagnosis code is stored.
(1)Erase the diagnosis code.
(2)Turn on the power supply mode of the electric motor switch to make the READY (ready to drive) indicator illuminate.
(3)Check if the diagnosis code is stored.

Q. Is the diagnosis code stored?

Return to Step 1.
The procedure is complete.