AIR CONDITIONING SYSTEM Cooling Box Control Switch Circuit

DESCRIPTION

The cooler control switch sub-assembly is the activation switch for the cool box. If the cool box does not activate when the cooler control switch is pushed, there may be a malfunction in the circuit shown below.

WIRING DIAGRAM

A01WSOSE06

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 Condition Specified Condition
      4 - Body ground Always 11 to 14 V
      1 - Body ground Engine switch off Below 1 V
      1 - Body ground 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 new or known good one.

      OK
      Same problem does not occur.

    OK

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

    NG

  4. INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY


    1. Remove the cooler control switch sub-assembly Click here.

    2. Inspect the cooler control switch sub-assembly Click here.


    OK

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

    NG

    REPLACE COOLER CONTROL SWITCH SUB-ASSEMBLY Click here