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

A01SAZ6E01

CAUTION / NOTICE / HINT

Note

When the servo motor or air conditioning amplifier assembly is replaced, be sure to perform servo motor initialization.

Click here

Tech Tips

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


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


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Data List.

    5. Check the value(s) by referring to the table below.


      Body Electrical > Air Conditioner > Data List
      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

      		 -

      Body Electrical > Air Conditioner > Data List
      Tester Display
      IDLE UP/PWR HEAT Switch
      OK
      The display is as specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

    NG

  2. CHECK IDLE UP SWITCH


    1. A01SBU9C01
      *a

      Front view of wire harness connector

      (to Idle Up Switch)

      Disconnect the idle up switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G75-6 (SW) - Body ground Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT IDLE UP SWITCH


    1. Remove the idle up switch.

      Click here

    2. Inspect the idle up switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE IDLE UP SWITCH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (IDLE UP SWITCH - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. Disconnect the G75 idle up switch connector.

    2. Disconnect the G33 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
      G75-3 (E) - G33-4 (SWVC) Always Below 1 Ω
      G75-3 (E) or G33-4 (SWVC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR