CHECK ON INSULATION RESISTANCE OF ON BOARD CHARGER (OBC) /DC-DC CONVERTER

CHECK ON INSULATION RESISTANCE OF ON BOARD CHARGER (OBC)/DC-DC CONVERTER

danger

When servicing the high voltage components, be sure to remove the service plug in order to shut off the high voltage (Refer to PRECAUTIONS ON HOW TO USE THE HIGH-VOLTAGE VEHICLE).
When servicing the high voltage components, be sure to wear an insulating protective equipment to measure the high voltage (Refer to PRECAUTIONS ON HOW TO USE THE HIGH-VOLTAGE VEHICLE).

caution

The insulation resistance check must be completed within 10 seconds. (Since DC 1,000 V is applied while checking, parts may be damaged if the check continues for 10 seconds or more.)

Required Special Tools:

MB991223: Wiring harness set
MB992006: Extra fine probe
MB992355: Electric insulation tester

1. Remove the third seat (Refer to Removal and Installation

2. Remove the cargo floor cover (Refer to Removal and Installation

3. Remove the EV control unit cover (LH/RH) (Refer to ON BOARD CHARGER (OBC) &DC-DC CONVERTER REMOVAL AND INSTALLATION

4. Remove the junction box upper lid (Refer to JUNCTION BOX REMOVAL AND INSTALLATION

5. Disconnect the On Board Charger (OBC)/DC-DC converter cable from the junction box (Refer to ON BOARD CHARGER (OBC) &DC-DC CONVERTER REMOVAL AND INSTALLATION

6. Use the electric insulation tester (Special tool: MB992355) and set it to the 1,000 V range.

7. Measure the insulation resistance between the On Board Charger (OBC)/DC-DC converter high voltage terminals (P, N) and On Board Charger (OBC)/DC-DC converter (body ground).

Standard value: 10 MΩ or more

8. If the measured value is not within the standard value, replace the On Board Charger (OBC)/DC-DC converter.