CHECK THE INSULATION RESISTANCE IN THE 120V AC SOCKET

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 120V AC socket (Refer to Interior - Luggage Trim Removal and Installation

or Instrument Panel - Console Rear Finisher Removal and Installation

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

3. Measure the insulation resistance of the 120V AC socket.

Measuring terminal	Standard value
Between terminal Nos. 1 and 4	10 MΩ or more
Between terminal Nos. 2 and 4	10 MΩ or more

4. If the measured value is not within the standard value, replace the 120V AC socket.