AIR CONDITIONING SYSTEM(for Automatic 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


  1. w/ Rear Heater:

    A01XB3DE05

  2. w/o Rear Heater:

    A01XB3DE06

PROCEDURE


  1. READ VALUE USING GTS (IDLE UP/PWR HEAT SWITCH)


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

      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.

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    OK

  2. INSPECT IDLE UP SWITCH


    1. Remove the idle up switch Click here.

    2. Inspect the idle up switch Click here.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. w/ Rear Heater:


      1. Disconnect the E97 idle up switch connector.

      2. Disconnect the E35 air conditioning amplifier assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E97- 6 (+S) - E35-28 (SW 1) Always Below 1 Ω
        E97-3 (E) - Body ground Always Below 1 Ω
        E97- 6 (+S) or E35-28 (SW 1) - Body ground Always 10 kΩ or higher

    2. w/o Rear Heater:


      1. Disconnect the E97 idle up switch connector.

      2. Disconnect the E81 air conditioning amplifier assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E97- 6 (+S) - E81-4 (SW 1) Always Below 1 Ω
        E97-3 (E) - Body ground Always Below 1 Ω
        E97- 6 (+S) or E81-4 (SW 1) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR