Air Conditioning System (For Automatic Air Conditioning System) Rear Magnetic Valve Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (REAR A/C MAG VALVE)

CHECK HARNESS AND CONNECTOR (WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY - BATTERY)

CHECK HARNESS AND CONNECTOR (WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

CHECK REAR COOLING UNIT EXPANSION VALVE

CHECK WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY (OPERATION)

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - Rear Magnetic Valve Circuit


DESCRIPTION

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

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) Rear Magnetic Valve Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING GTS (REAR A/C MAG VALVE)

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

    Air Conditioner
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Rear A/C Mag Valve
    		Rear A/C magnetic valve
    		ON or OFF
    		-
    OK:
    Rear magnetic valve operates normally using GTS.


NG
Go to step 2
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)

2.CHECK HARNESS AND CONNECTOR (WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY - BATTERY)


    Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. Disconnect the wiring air conditioning harness sub-assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    2 - Body ground
    		Ignition switch off
    		Below 1 V
    2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Wiring Air Conditioning Harness Sub-assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

  1. Disconnect the wiring air conditioning harness sub-assembly connector.

  1. Disconnect the E36 air conditioning amplifier assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - E36-19 (RMGV)
    		Always
    		Below 1 Ω
    3 or E36-19 (RMGV) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK REAR COOLING UNIT EXPANSION VALVE

  1. Replace the rear cooling unit expansion valve with a new or known good one and check that the condition returns to normal. (Click here)

    HINT:
    Since the rear cooling unit expansion valve cannot be inspected while it is removed from the vehicle, replace the rear cooling unit expansion valve with a new or known good one and check that the condition returns to normal.
    OK:
    Same problem does not occur.


NG
Go to step 5
OK

END (REAR COOLING UNIT EXPANSION VALVE WAS DEFECTIVE)

5.CHECK WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY (OPERATION)

  1. Replace the wiring air conditioning harness sub-assembly with a new or known good one and check that the condition returns to normal.

    OK:
    Same problem does not occur.


NG
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
OK

END (WIRING AIR CONDITIONING HARNESS SUB-ASSEMBLY WAS DEFECTIVE)