Code No. P1A10: On board charger power supply relay circuit, low input
Code No. P1A11: On board charger power supply relay circuit, high input


REGULAR CHARGING CONTROL SYSTEM CIRCUIT






OPERATION



DIAGNOSIS CODE SET CONDITIONS



  • When the on board charger relay coil drive circuit monitor is set to ON while the on board charger relay stop command is underway, the diagnosis code No. P1A10 will be set.
  • When the on board charger relay coil drive circuit monitor is set to OFF while the on board charger relay drive command is underway, the diagnosis code No. P1A11 will be set.

PROBABLE CAUSES



  • Damaged wiring harness or connector(s)
  • Malfunction of the on board charger relay
  • Malfunction of the EV-ECU

DIAGNOSIS PROCEDURE

STEP 1. Measure the voltage at A-06X on board charger relay (relay box) connector.
(1)Disconnect the on board charger relay, and measure the voltage at the wiring harness side.
(2)Turn the electric motor switch to the ON position.
(3)Measure the voltage between the A-06X on board charger relay (relay box) connector terminal No. 3 and the body earth.
OK: Battery voltage

Q. Is the check result normal?
Go to Step 4.
Go to Step 2.

STEP 2. Connector check: A-06X on board charger relay (relay box) connecter

Q. Is the check result normal?
Go to Step 3.
Correct or replace the relay box.

STEP 3. Check the wiring harness between A-06X on board charger relay (relay box) connector terminal No. 3 and A-08X EV control relay (relay box) connector terminal No. 1.
Check the power supply line for open circuit.

Q. Is the check result normal?
Go to Step 4.
Repair the wiring harness.

STEP 4. On board charger relay check
Check the on board charger relay. (Refer to .)

Q. Is the check result normal?
Go to Step 5.
Replace the on board charger relay.

STEP 5. Connector check: A-06X on board charger relay (relay box) connecter, C-108 EV-ECU connector

Q. Is the check result normal?
Go to Step 6.
Repair the damaged connector. In addition, repair or replace the relay box.

STEP 6. Check the wiring harness between C-108 EV -ECU connector terminal No. 66 and A-06X on board charger relay (relay box) connector terminal No. 2.
Check the power supply line for open circuit and short to earth.

Q. Is the check result normal?
Go to Step 7.
Repair the wiring harness.

STEP 7. M.U.T.-III actuator test and service data
Conduct the actuator test to set the on board charger relay drive to OFF (refer to ), and check the service data of the on board charger relay (refer to ).
Actuator test
  • Item No. 6 : On board charger power supply relay
OK: The on board charger operates normally.
Data list
  • Item No. 59 : On board charger power supply relay

Q. Is the check result normal?
Go to Step 8.
Replace the on board charger relay.

STEP 8. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Connect the regular charging gun. Or connect the M.U.T.-III..
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the EV-ECU. (Refer to .) Then go to Step 9.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

STEP 9. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Connect the regular charging gun. Or connect the M.U.T.-III..
(3)Check if the diagnosis code is set.

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