Code No. 02: Load Connection Abnormal (main battery not connected)










TROUBLE JUDGMENT


Check Conditions
  • The on board charger control power supply voltage is more than 8 V.
  • While the on board charger is allowed to be charged from the EV-ECU.
Judgement Criterion
  • The output (terminal) voltage is less than 184 V.

FAIL-SAFE AND BACKUP FUNCTION



  • The charge is stopped.

PROBABLE CAUSES



  • Fuse meltdown between on board charger and inverter
  • Open circuits or damage of high voltage circuits between on board charger and main battery; or poor contact of connector
  • The on board charger is failed.

DIAGNOSIS PROCEDURE


danger When high voltage system components are served, be sure to pull service plugs to shut down high voltage (Refer to ).
danger When pulling service plugs, wear the specified protective equipment (Refer to ).

STEP 1. M.U.T.-III other system diagnosis code.


Q. Is the diagnosis code of EV-ECU system set?

Check EV-ECU system (Refer to ).
Go to Step 2 .

STEP 2. Continuity check on fuse between on board charger and inverter



danger High voltage system components are served, be sure to pull service plugs to shut down high voltage before serving (Refer to ).
danger When pulling service plugs, wear the specified protective equipment (Refer to ).

  • Check continuity of fuse both ends.
OK: Continuity

Q. Is the check result normal?

Go to Step 3 .

Replace the fuse.

STEP 3. Connector check: G-13 on board charger/DC-DC converter connector, G-06 inverter (+ terminal) connector


Q. Is the check result normal?

Go to Step 4 .
Repair.

STEP 4. Check harness between G-13 (terminal No. 1) main battery connector and G-06 (terminal No. 1) inverter (+ terminal) connector



  • Check power supply line for open circuit and damage.

Q. Is the check result normal?

Go to Step 5 .
Repair.

STEP 5. Connector check: G-05 inverter (- terminal) connector


Q. Is the check result normal?

Go to Step 6 .
Repair.

STEP 6. Check harness between G-13 (terminal No. 2) main battery connector and G-05 (terminal No. 1) inverter (- terminal) connector



  • Check power supply line for open circuit and damage.

Q. Is the check result normal?

Go to Step 7 .
Repair.

STEP 7. M.U.T.-III diagnosis code


Q. Is the diagnosis code set?

Replace the on board charger/DC-DC converter.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).




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