STOP AND START SYSTEM Air Conditioning Control Panel Circuit

DTC Code DTC Name
Air Conditioning Control Panel Circuit

DESCRIPTION

The air conditioning control assembly transmits the operation signal of each switch to the engine stop and start ECU.

WIRING DIAGRAM

A327787E01

PROCEDURE

  1. READ VALUE 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: Powertrain / Stop and Start / Data List / A/C & Blower & Defroster SW and A/C & Blower SW.

    5. According to the display on the GTS, read the Data List.

      OK

      Tester Display

      Condition

      Normal Condition

      A/C & Blower & Defroster SW

      A/C, blower (bower level 2 or more) and defroster switches on

      ON

      A/C, blower or defroster switch off

      OFF

      A/C & Blower SW

      A/C and blower (bower level 2 or more) switches on

      ON

      A/C or blower switch off

      OFF

      Powertrain > Stop and Start > Data List

      Tester Display

      A/C & Blower & Defroster SW

      A/C & Blower SW

      Result

      Result

      Proceed to

      NG (A/C & Blower & Defroster SW)

      A

      NG (A/C & Blower SW)

      B

      OK

      C
    B

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - AIR CONDITIONING CONTROL ASSEMBLY)Click here

    C

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick hereClick here

    A

  2. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - AIR CONDITIONING CONTROL ASSEMBLY)

    1. Disconnect the A25 engine stop and start ECU connector.

    2. Disconnect the E26 air conditioning control assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A25-26 (DEON) - E26-2 (IMD)

      Always

      Below 1 Ω

      A25-26 (DEON) - Body ground

      Always

      10 kΩ or higher

      E26-2 (IMD) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK ENGINE STOP AND START ECU (DEON TERMINAL VOLTAGE)

    1. Disconnect the E26 air conditioning control assembly connector.

      A285225C61

      *a

      Component with harness connected

      (Engine Stop and Start ECU)

      -

      -

    2. Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A25-26 (DEON) - A23-8 (GND)

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    GO TO AIR CONDITIONING SYSTEM

    Click here

    NG

    REPLACE ENGINE STOP AND START ECU

    Click here

  4. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - AIR CONDITIONING CONTROL ASSEMBLY)

    1. Disconnect the A25 engine stop and start ECU connector.

    2. Disconnect the E26 air conditioning control assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A25-8 (ABON) - E26-1 (DLY)

      Always

      Below 1 Ω

      A25-8 (ABON) - Body ground

      Always

      10 kΩ or higher

      E26-1 (DLY) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK ENGINE STOP AND START ECU (ABON TERMINAL VOLTAGE)

    1. Disconnect the E26 air conditioning control assembly connector.

      A285225C60

      *a

      Component with harness connected

      (Engine Stop and Start ECU)

      -

      -

    2. Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A25-8 (ABON) - A23-8 (GND)

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    GO TO AIR CONDITIONING SYSTEM

    Click here

    NG

    REPLACE ENGINE STOP AND START ECU

    Click here