AIR CONDITIONING SYSTEM No Cooling at All

DESCRIPTION

If cool air is not discharged (air is discharged), the following malfunctions are possible.

Malfunction Status Factor
Cool air is not discharged (air is discharged)

  • Compressor with motor assembly

  • Refrigerant pressure malfunction

  • Quantity of refrigerant gas lack

  • Dirty cooler condenser

  • Cooling fan system malfunction

  • A/M damper and link operation (jamming)

  • No. 1 cooler thermistor (determined as cold, conflicting with actual temperature)

  • Warm air flow

PROCEDURE


  1. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY (SWITCH INDICATOR)


    1. Operate each switch on the integration control and panel assembly to check that the switch indicators are illuminated normally.

      OK
      Switch indicators are illuminated normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO OPERATION NOT ACCEPTED EVEN IF AIR CONDITIONING SWITCH IS OPERATED Click here

    OK

  2. PERFORM ACTIVE TEST USING GTS (SERVO PULSE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Active Test.

    5. Check the operation by referring to the table below.


      Body Electrical > Air Conditioner > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Air Mix Servo Targ Pulse(D)

        for LHD:

      • No. 1 air conditioning radiator damper servo sub-assembly (driver side upper air mix) operation


        for RHD:

      • No. 4 air conditioning radiator damper servo sub-assembly (driver side upper air mix) operation

      Min.: 128

      Max.: 383

      		 Operates between 186 and 258 pulses
      Air Mix Servo Targ Pulse(P) No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) operation

      Min.: 128

      Max.: 383

      		 Operates between 154 and 258 pulses

      Body Electrical > Air Conditioner > Active Test
      Tester Display
      Air Mix Servo Targ Pulse(D)

      Body Electrical > Air Conditioner > Active Test
      Tester Display
      Air Mix Servo Targ Pulse(P)
      OK
      Damper servo motor is operated.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO ON-VEHICLE INSPECTION Click here

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION) Click here