AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) Idle Up Switch Circuit

DESCRIPTION

When the idle up switch is pushed, the air conditioning amplifier assembly outputs the engine idle up signal. If engine idle up does not occur when the idle up switch is pushed, there may be a problem in the circuit shown below.

WIRING DIAGRAM

B001HR4E02

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (IDLE UP SWITCH)


    1. Use the Data List to check if the idle up switch is functioning properly Click here.

      Air Conditioner
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      IDLE UP/PWR HEAT Switch Idle up switch / ON or OFF

      ON: Idle up switch on

      OFF: Idle up switch off

      		 -
      OK
      The display is as specified in the normal condition column.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT IDLE UP SWITCH


    1. B001E4EE01

      Remove the idle up switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (SW) - 3 (E) Idle up switch on Below 1 Ω
      6 (SW) - 3 (E) Idle up switch off 10 kΩ or higher

    NG

    REPLACE IDLE UP SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (IDLE UP SWITCH - AIR CONDITIONING AMPLIFIER AND BODY GROUND)


    1. Disconnect the G20 switch connector.

    2. Disconnect the G25 amplifier connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G20-6 (SW) - G25-36 (SWVC) Always Below 1 Ω
      G20-3 (E) - Body ground Always Below 1 Ω
      G25-36 (SWVC) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR