AIR CONDITIONING SYSTEM Cooling Box Magnetic Valve Circuit

DESCRIPTION

The cooler expansion valve (cooler magnet valve) is controlled by the air conditioning amplifier assembly (for cool box).

WIRING DIAGRAM

A01WQ3NE08

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. 1 COOLER WIRING HARNESS SUB-ASSEMBLY - BATTERY)


    1. A01WR9BE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Cooler Wiring Harness Sub-assembly)

      Disconnect the No. 1 cooler wiring harness sub-assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      1 - Body ground Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY - BODY GROUND)


    1. A01WR9BE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to No. 1 Cooler Wiring Harness Sub-assembly)

      Disconnect the No. 1 cooler wiring harness sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY


    1. Replace the No. 1 cooler wiring harness sub-assembly with a normal one and check that the condition returns to normal.

      OK
      Same problem does not occur.

    OK

    END (NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY WAS DEFECTIVE))

    NG

  4. CHECK COOLER MAGNET VALVE ASSEMBLY


    1. Replace the cooler magnet valve assembly Click here.

      Tech Tips

      Since the cooler magnet valve cannot be inspected while it is removed from the vehicle, replace the cooler magnet valve with a normal one and check that the condition returns to normal.

      OK
      Same problem does not occur.

    OK

    REPLACE COOLER MAGNET VALVE ASSEMBLY Click here

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Cool Box) Click here