AIR CONDITIONING SYSTEM Rear Air Conditioning Control Panel Circuit

DTC Code DTC Name
Rear Air Conditioning Control Panel Circuit

DESCRIPTION

This circuit consists of the No. 2 air conditioning control assembly and air conditioning amplifier. When the No. 2 air conditioning control assembly is operated, signals are transmitted to the air conditioning amplifier through the LIN communication system.

If the LIN communication system malfunctions, the air conditioning amplifier does not operate even if the No. 2 air conditioning control assembly is operated.

WIRING DIAGRAM

E157369E51

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING CONTROL - AIR CONDITIONING AMPLIFIER)

    1. Disconnect the G12 amplifier connector.

    2. Disconnect the T2 control connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      T2-6 (RLIN) - G12-13 (RLIN)

      Always

      Below 1 Ω

      T2-6 (RLIN) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING CONTROL - BATTERY AND BODY GROUND)

    1. E204872C03

      *a

      Front view of wire harness connector

      (to No. 2 Air Conditioning Control Assembly)

      Disconnect the T2 control connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      T2-1 (IG) - T2-8 (E)

      Engine switch off

      Below 1 V

      T2-1 (IG) - T2-8 (E)

      Engine switch on (IG)

      11 to 14 V

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      T2-8 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE NO. 2 AIR CONDITIONING CONTROL ASSEMBLY

    1. Replace the No. 2 air conditioning control assembly with a new or normally functioning one

      Click here

    2. Operate the No. 2 air conditioning control assembly to check that it functions properly.

      OK

      No. 2 air conditioning control assembly operates normally.

    Result

    Result

    OK

    NG
    OK

    END (NO. 2 AIR CONDITIONING CONTROL ASSEMBLY IS FAULTY)

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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