Air Conditioning System (For Automatic Air Conditioning System) Cooling Box Control Switch Circuit

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Heating Air Conditioning. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY - BATTERY)

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

CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY

INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY

AIR CONDITIONING SYSTEM (for Automatic 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


Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Cooling Box Control Switch Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY - BATTERY)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Cooling Box Control Switch Circuit

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

  1. 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
    		Ignition switch off
    		Below 1 V
    1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 1 Cooler Wiring Harness Sub-assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Cooling Box Control Switch Circuit

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

  1. 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
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 1 Cooler Wiring Harness Sub-assembly)


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.


NG
Go to step 4
OK

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

4.INSPECT COOLER CONTROL SWITCH SUB-ASSEMBLY

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

  1. Inspect the cooler control switch sub-assembly (Click here).



NG
REPLACE COOLER CONTROL SWITCH SUB-ASSEMBLY (Click here)
OK

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