ASC SWITCH INSPECTION

PROCEDURE


  1. INSPECT VEHICLE SOUND SWITCH


    1. A01MT6HC08
      *a

      Component without harness connected

      (Vehicle Sound Switch)
      *b Switch Indicator

      Check the vehicle sound switch on/off operation


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        3 (NVI) - 8 (NVS) Vehicle sound switch on Below 1 Ω
        Vehicle sound switch off 10 kΩ or higher

        If the result is not as specified, replace the vehicle sound switch.

    2. Inspect the switch indicator


      1. Apply auxiliary battery voltage to the vehicle sound switch connector and check that the switch indicator comes on.

        OK
        Measurement Condition Condition Specified Condition

        Auxiliary battery positive (+) → 8 (NVS)

        Auxiliary battery negative (-) → 4 (E)

        		 Vehicle sound switch on Switch indicator comes on

        If the result is not as specified, replace the vehicle sound switch.

    3. Check the volume control function


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        6 (NVM) - 8 (NVS) Vehicle sound switch volume set to maximum 4.08 to 2.72 kΩ
        Vehicle sound switch volume set to minimum 0.42 to 0.28 kΩ

        If the result is not as specified, replace the vehicle sound switch.

    4. Inspect the switch illumination


      1. Apply auxiliary battery voltage to the vehicle sound switch connector and check that the switch illumination comes on.

        OK
        Measurement Condition Specified Condition

        Auxiliary battery positive (+) → 7 (ILL+)

        Auxiliary battery negative (-) → 2 (ILL-)

        		 Switch illumination comes on

        If the result is not as specified, replace the vehicle sound switch.