Heating Air Conditioning. Air Conditioning System (For Automatic Air Conditioning System) Eco Switch Circuit

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200

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

INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY

CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY AND BODY GROUND)

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - ECO Switch Circuit

DESCRIPTION

When the integration control and panel assembly is turned to ECO position, the air conditioning amplifier assembly controls the air conditioning system to enhance fuel efficiency.

WIRING DIAGRAM

w/ Rear Heater:

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) Eco Switch Circuit

w/o Rear Heater:

INSPECTION PROCEDURE

1.READ VALUE USING GTS (ECO SWITCH)

Use the Data List to check if the integration control and panel assembly is functioning properly (Click here).

Air Conditioner
Tester Display	Measurement Item/Range	Control Range	Diagnostic Note
ECO Switch	Integration control and panel assembly / OFF or ON	ON: Integration control and panel assembly being turned and held at ECO position OFF: Integration control and panel assembly not turned	-

OK:: The integration control and panel assembly condition displayed on the GTS changes with the actual switch operation.

Go to step 2

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

2.INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY

Remove the integration control and panel assembly.
1. for AB60F: Click here
2. for A750F: Click here

Inspect the integration control and panel assembly.
1. for AB60F: Click here
2. for A750F: Click here

Result
Result	Proceed to
OK	A
NG (for AB60F)	B
NG (A750F)	C

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY (Click here)

A

3.CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY AND BODY GROUND)

w/ Rear Heater:
1. Disconnect the V9 integration control and panel assembly connector.
2. Disconnect the E36 air conditioning amplifier assembly connector.
3. Measure the resistance according to the value(s) in the table below.
  
  Standard Resistance:
  for LHD:
  Tester Connection
  Condition
  Specified Condition
  V9-6 (ECU) - E36-29 (ECOS)
  Always
  Below 1 Ω
  V9-5 (E) - Body ground
  Always
  Below 1 Ω
  V9-6 (ECU) or E36-29 (ECOS) - Body ground
  Always
  10 kΩ or higher
  for RHD:
  Tester Connection
  Condition
  Specified Condition
  V9-3 (ECU) - E36-29 (ECOS)
  Always
  Below 1 Ω
  V9-5 (E) - Body ground
  Always
  Below 1 Ω
  V9-3 (ECU) or E36-29 (ECOS) - Body ground
  Always
  10 kΩ or higher

w/o Rear Heater:
1. Disconnect the V9 integration control and panel assembly connector.
2. Disconnect the 165 air conditioning amplifier assembly connector.
3. Measure the resistance according to the value(s) in the table below.
  
  Standard Resistance:
  for LHD:
  Tester Connection
  Condition
  Specified Condition
  V9-6 (ECU) - E165-6 (ECOS)
  Always
  Below 1 Ω
  V9-5 (E) - Body ground
  Always
  Below 1 Ω
  V9-6 (ECU) or E165-6 (ECOS) - Body ground
  Always
  10 kΩ or higher
  for RHD:
  Tester Connection
  Condition
  Specified Condition
  V9-3 (ECU) - E165-6 (ECOS)
  Always
  Below 1 Ω
  V9-5 (E) - Body ground
  Always
  Below 1 Ω
  V9-3 (ECU) or E165-6 (ECOS) - Body ground
  Always
  10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)

Tester Connection	Condition	Specified Condition
V9-6 (ECU) - E36-29 (ECOS)	Always	Below 1 Ω
V9-5 (E) - Body ground	Always	Below 1 Ω
V9-6 (ECU) or E36-29 (ECOS) - Body ground	Always	10 kΩ or higher