AIR CONDITIONING SYSTEM Operation not Accepted Even If Air Conditioning Switch is Operated

DESCRIPTION

If the air conditioning system does not operate even when the integration control and panel assembly is operated, the following causes are possible.

Malfunction Status Factor

Operations are never accepted by the integration control and panel assembly


  • (With the exception of the switch indicator, everything is turned off)

  • LIN communication malfunction between air conditioning amplifier assembly and integration control and panel assembly

  • Air conditioning amplifier assembly malfunction (+B or GND circuit)

  • Air conditioning amplifier assembly malfunction

  • Integration control and panel assembly malfunction

WIRING DIAGRAM

B000NYKE02

CAUTION / NOTICE / HINT

Note


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

  • If DTC B14B7 is output at the same time, troubleshoot for DTC B14B7 first.

  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Air Conditioner > Trouble Codes
      OK
      DTC B14B2 is not output.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO DTC B14B2 Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)


    1. B000QU7C06
      *a

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

      Disconnect the 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
      P58-4 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      P58-1 (+B1) - Body ground Power switch off 11 to 14 V
      P58-2 (IG+) - Body ground Power switch on (IG) 11 to 14 V
      Power 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