Air Conditioning System (For Automatic Air Conditioning System) Air Conditioning Control Panel Does Not Operate

Heater & Air Conditioning System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Air Conditioning. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRE HARNESS (AIR CONDITIONING CONTROL ASSEMBLY - BODY GROUND)

CHECK WIRE HARNESS (AIR CONDITIONING CONTROL ASSEMBLY - BATTERY)

CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - AIR CONDITIONING CONTROL)

REPLACE AIR CONDITIONING CONTROL ASSEMBLY

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - Air Conditioning Control Panel does not Operate


DESCRIPTION

This circuit consists of the air conditioning control and the air conditioning amplifier. When the air conditioning control is operated, signals are transmitted to the air conditioning amplifier through the LIN communication system.
If the LIN communication system malfunctions, the air conditioning amplifier does not operate even if the air conditioning control is operated.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Air Conditioning Control Panel Does Not Operate


INSPECTION PROCEDURE

1.CHECK WIRE HARNESS (AIR CONDITIONING CONTROL ASSEMBLY - BODY GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Air Conditioning Control Panel Does Not Operate

  1. Disconnect the air conditioning control assembly connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E26-7 (GND) - Body ground
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


2.CHECK WIRE HARNESS (AIR CONDITIONING CONTROL ASSEMBLY - BATTERY)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Air Conditioning Control Panel Does Not Operate

  1. Disconnect the E26 air conditioning control assembly connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E26-7 (GND) - E26-2 (IG+)
    		Ignition switch on (IG)
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - AIR CONDITIONING CONTROL)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Automatic Air Conditioning System) Air Conditioning Control Panel Does Not Operate

  1. Disconnect the E26 control connector.

  1. Disconnect the E41 amplifier connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E41-37 (LIN1) - E26-11 (LIN1)
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.REPLACE AIR CONDITIONING CONTROL ASSEMBLY

  1. Replace the air conditioning control with a new or properly functioning one.

  1. Operate the air conditioning control to check that it functions properly.

    Result:

    Result
    		Proceed to
    Air conditioning control malfunctions
    		A
    Air conditioning control functions properly
    		B


B
END (AIR CONDITIONING CONTROL ASSEMBLY IS FAULTY)
A

REPLACE AIR CONDITIONING AMPLIFIER