DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 92 (Heating / Air Conditioning System (HV) - Diagnostic Codes (3 Of 3), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for HV Model) >> No Cooling at All [11/2023 - ] >> Procedure

No Cooling at All [11/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK SWITCH INDICATOR 
    1. Operate each switch on the air conditioning control assembly and check that the switch indicators operate normally.

      OK

      All switch indicators operate normally.

      Result

      Result Proceed to
      OK A
      NG (for Air conditioning control assembly) B
      NG (for No. 2 air conditioning control assembly) C

    Result: 

    GO TO OTHER DIAGNOSIS PROCEDURE (Operation not Accepted Even If Air Conditioning Switch is Operated). Refer to  Operation not Accepted Even If Air Conditioning Switch is Operated [11/2023 - ]  

    Result: 

    GO TO OTHER DIAGNOSIS PROCEDURE (Rear Panel Switch Operation not Accepted). Refer to  Rear Panel Switch Operation not Accepted [11/2023 - ]  

    Result: 

    See step  2

  2. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Air Conditioner > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Front Left Air Mix Damper Control Servo Motor This test activates the Front Left Air Mix Damper Control Servo Motor.
      (No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix))
      128: Min
      384: Max
      Operate with ignition switch ON.
      Front Right Air Mix Damper Control Servo Motor This test activates the Front Right Air Mix Damper Control Servo Motor.
      (No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix))
      128: Min
      384: Max
      Operate with ignition switch ON.
      Rear Air Mix Damper Control Servo Motor This test activates the rear air mix damper control servo motor.
      (Rear air mix damper servo sub-assembly)
      128: Min
      384: Max
      Operate with ignition switch ON.

      Body Electrical > Air Conditioner > Active Test 

      Active Test Display
      Front Left Air Mix Damper Control Servo Motor
      Data List Display
      Front Left Air Mix Damper Control Servo Motor Actual Pulse

      Body Electrical > Air Conditioner > Active Test 

      Active Test Display
      Front Right Air Mix Damper Control Servo Motor
      Data List Display
      Front Right Air Mix Damper Control Servo Motor Actual Pulse

      Body Electrical > Air Conditioner > Active Test 

      Active Test Display
      Rear Air Mix Damper Control Servo Motor
      Data List Display
      Rear Air Mix Damper Control Servo Motor Actual Pulse

      OK

      Damper servo motor is operated.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET. Refer to  ON-VEHICLE INSPECTION [12/2019 - ] 

    Result: 

    NG 

    GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]