CHECK THE INSULATION RESISTANCE IN THE AC INVERTER

CHECK ON INSULATION RESISTANCE OF AC INVERTER

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. Disconnect the high voltage cable (P, N) from the AC inverter.

5. Disconnect the AC power supply wiring harness from the AC inverter.

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 AC inverter high voltage terminals (P, N) and AC power supply terminals (AC+, AC-), and AC inverter (body ground).

Standard value: 10 MΩ or more

8. If the measured value is not within the standard value, replace the AC inverter.