Heating Air Conditioning. Air Conditioning System (For Automatic Air Conditioning System) Back-Up Power Source Circuit

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200

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

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)

AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) - Back-up Power Source Circuit

DESCRIPTION

The back-up power source circuit for the air conditioning amplifier assembly is shown below. Power is supplied even when turning the ignition switch off and is used for diagnostic trouble code memory, etc.

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) Back-Up Power Source Circuit

w/o Rear Heater:

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND)

w/ Rear Heater:
1. Disconnect the air conditioning amplifier assembly connectors.
2. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E35-6 (E1) - Body ground
  Always
  11 to 14 V
  E36-1 (GND) - Body ground
  Always
  11 to 14 V
3. Measure the voltage according to the value(s) in the table below.
  Standard Voltage:
  Tester Connection
  Condition
  Specified Condition
  E36-6 (+B1) - Body ground
  Always
  11 to 14 V
  E36-7 (+B2) - Body ground
  Always
  11 to 14 V

w/o Rear Heater:
1. Disconnect the air conditioning amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  E81-14 (GND) - Body ground
  Always
  11 to 14 V
3. Measure the voltage according to the value(s) in the table below.
  Standard Voltage:
  Tester Connection
  Condition
  Specified Condition
  E81-21 (+B1) - Body ground
  Always
  11 to 14 V

Text in Illustration
*a	Rear view of wire harness connector (to Air Conditioning Amplifier Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

Tester Connection	Condition	Specified Condition
E35-6 (E1) - Body ground	Always	11 to 14 V
E36-1 (GND) - Body ground	Always	11 to 14 V