AIR CONDITIONING SYSTEM Rear Magnetic Valve Circuit

DTC Code DTC Name
Rear Magnetic Valve Circuit

DESCRIPTION

The rear cooling unit expansion valve (rear magnetic valve) is controlled by the air conditioning amplifier assembly.

WIRING DIAGRAM

E204873E04

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (REAR MAGNETIC VALVE)

    1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the rear cooling unit expansion valve (rear magnetic valve) operates

      Click hereClick here

      OK

      Rear cooling unit expansion valve (rear magnetic valve) operates normally.

      Body Electrical > Air Conditioner > Active Test

      Tester Display

      Rear A/C Mag Valve

      Body Electrical > Air Conditioner > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Rear A/C Mag Valve

      Rear magnetic valve operation

      ON or OFF

      -

    Result

    Result

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click hereClick here

    NG

  2. CHECK HARNESS AND CONNECTOR (REAR MAGNETIC VALVE - BATTERY)

    1. E205395C01

      *a

      Front view of wire harness connector

      (to Rear Cooling Unit Expansion Valve [Rear Magnetic Valve])

      Disconnect the Q26 valve connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      Q26-2 (+S) - Body ground

      Engine switch off

      Below 1 V

      Engine switch on (IG)

      11 to 14 V

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (REAR MAGNETIC VALVE - AIR CONDITIONING AMPLIFIER)

    1. Disconnect the Q26 valve connector.

    2. Disconnect the G13 amplifier connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q26-1 (RMGV) - G13-19 (RMGV)

      Always

      Below 1 Ω

      Q26-1 (RMGV) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE REAR COOLING UNIT EXPANSION VALVE (REAR MAGNETIC VALVE)

    1. Replace the rear cooling unit expansion valve (rear magnetic valve)

      Click here

      Tip:

      Since the rear cooling unit expansion valve (rear magnetic valve) cannot be inspected while it is removed from the vehicle, replace the rear cooling unit expansion valve (rear magnetic valve) with a normal one and check that the operation returns to normal.

      OK

      Same problem does not occur.

    Result

    Result

    OK

    NG
    OK

    END (REAR COOLING UNIT EXPANSION VALVE [REAR MAGNETIC] IS FAULTY)

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

    Click here