Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - HEATING / AIR CONDITIONING

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (A/C)

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)

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 engine switch off and is used for diagnostic trouble code memory, etc.


WIRING DIAGRAM

Air Conditioning System (For Automatic Air Conditioning System) - Back-Up Power Source Circuit. HEATING / AIR CONDITIONING. Land Cruiser URJ200  URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

1.INSPECT FUSE (A/C)

Remove the A/C fuse from the cowl side junction block LH.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    A/C fuseAlwaysBelow 1 Ω
NG
REPLACE FUSE
OK
2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)
Air Conditioning System (For Automatic Air Conditioning System) - Back-Up Power Source Circuit. HEATING / AIR CONDITIONING. Land Cruiser URJ200  URJ202 GRJ200 VDJ200

w/ Rear Heater


Disconnect the E36 amplifier connector.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    E36-6 (+B1) - Body groundAlways11 to 14 V
    E36-7 (+B2) - Body ground
Air Conditioning System (For Automatic Air Conditioning System) - Back-Up Power Source Circuit. HEATING / AIR CONDITIONING. Land Cruiser URJ200  URJ202 GRJ200 VDJ200

w/o Rear Heater


Disconnect the E81amplifier connector.

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

  • Standard Voltage:
  • Tester ConnectionConditionSpecified Condition
    E81-21 (+B1) - Body groundAlways11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY ()