AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Operation not Accepted Even If Air Conditioning Switch is Operated

DESCRIPTION

If the air conditioning system cannot be operated using the air conditioning control panel (radio and display receiver assembly)*1 or air conditioning control assembly*2, the following factors may be the cause.

Symptom Factor

Air conditioning system cannot be operated using air conditioning control panel (radio and display receiver assembly)*1 or air conditioning control assembly*2


  • (With the exception of the switch indicators, no inputs are reflected when other switches operated)

  • CAN communication malfunction between air conditioning amplifier assembly and air conditioning control panel (radio and display receiver assembly)*1

  • LIN communication malfunction between air conditioning amplifier assembly and air conditioning control assembly*2

  • Short to +B or ground in air conditioning amplifier assembly circuit

  • Air conditioning amplifier assembly malfunction

  • Air conditioning control panel (radio and display receiver assembly) malfunction*1

  • Air conditioning control assembly malfunction*2

  • Harness or connector

WIRING DIAGRAM


  1. for 8 Inch Display

    B006WY1E03

  2. except 8 Inch Display

    B006ZKPE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CONFIRM MODEL

    Result
    Result Proceed to
    for 8 Inch Display A
    except 8 Inch Display B

    B

    CHECK FOR DTC Click here

    A

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - POWER SOURCE AND BODY GROUND)


    1. Disconnect the h1 air conditioning control panel (radio and display receiver assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      h1-3 (+B) - Body ground Always 11 to 14 V
      h1-10 (ACC) - Body ground Ignition switch ACC 11 to 14 V
      h1-2 (IG+) - Body ground Ignition switch ON 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      h1-6 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK FOR DTC (AUDIO AND VISUAL SYSTEM)


    1. Check for DTCs.


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      B15F9 is not output A
      B15F9 is output B

    B

    REPLACE AIR CONDITIONING CONTROL PANEL (RADIO AND DISPLAY RECEIVER ASSEMBLY) Click here

    A

  4. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  5. PERFORM ACTIVE TEST USING GTS


    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 / Active Test.

    5. 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
      Blower Motor Blower motor with fan sub-assembly

      Min.: 0

      Max.: 31

      		 -

      Body Electrical > Air Conditioner > Active Test
      Tester Display
      Blower Motor
      OK
      Blower motor with fan sub-assembly operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING CONTROL PANEL (RADIO AND DISPLAY RECEIVER ASSEMBLY) Click here

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  6. CHECK FOR DTC


    1. Check for DTCs.


      Body Electrical > Air Conditioner > Trouble Codes
      Result
      Result Proceed to
      B14B2 is not output A
      B14B2 is output B

    B

    GO TO DTC B14B2 Click here

    A

  7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE AND BODY GROUND)

    B006ZF9C12
    *a

    Front view of wire harness connector

    (to Air Conditioning Amplifier Assembly)

    1. Disconnect the K54 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K54-4 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K54-1 (B) - Body ground Always 11 to 14 V
      K54-2 (IG+) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR