Lin Communication System Rear Heater Control Panel Lin Communication Malfunction

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK AIR CONDITIONING TYPE

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - NO. 2 AIR CONDITIONING PANEL)

CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING CONTROL BATTERY AND BODY GROUND)

CHECK NO. 2 AIR CONDITIONING CONTROL

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - AIR CONDITIONING CONTROL)

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL BATTERY AND BODY GROUND)

CHECK AIR CONDITIONING CONTROL ASSEMBLY

LIN COMMUNICATION SYSTEM - Rear Heater Control Panel LIN Communication Malfunction


DESCRIPTION

The LIN communication of the components related to the rear air conditioning occurs between the air conditioning amplifier, air conditioning control and No. 2 air conditioning control*.
  1. *: w/ Rear heater

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Lin Communication System Rear Heater Control Panel Lin Communication Malfunction


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Lin Communication System Rear Heater Control Panel Lin Communication Malfunction


INSPECTION PROCEDURE

NOTICE:
  1. When using the GTS with the ignition switch off to troubleshoot:
    Connect the GTS to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the GTS and vehicle begins.
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK AIR CONDITIONING TYPE

  1. Check air conditioning type.

Result
Result
Proceed to
w/ Rear Heater
A
w/o Rear Heater
B


B
Go to step 5
A


2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - NO. 2 AIR CONDITIONING PANEL)

  1. Disconnect the E36 amplifier connector

  1. Disconnect the E55 panel connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E36-20 (RLIN) - E55-4 (RLIN)
    		Always
    		Below 1 Ω
    E36-20 (RLIN) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (NO. 2 AIR CONDITIONING CONTROL BATTERY AND BODY GROUND)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Lin Communication System Rear Heater Control Panel Lin Communication Malfunction

  1. Disconnect the panel connector.

  1. Measure the resistance and voltage according to the value(s) in the tables below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E55-1 (E) - Body ground
    		Always
    		Below 1 Ω
    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E55-6 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to No. 2 Air Conditioning Control)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK NO. 2 AIR CONDITIONING CONTROL

  1. Temporarily replace the No. 2 air conditioning control panel with a new or normally functioning one (Click here).

  1. Check that the rear air conditioning function is normal.

    OK:
    Rear air conditioning function is normal.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (w/ Navigation System)
    		B
    NG (w/o Navigation System)
    		C


B
Go to step 5

C
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
A

END (NO. 2 AIR CONDITIONING CONTROL IS DEFECTIVE)

5.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - AIR CONDITIONING CONTROL)
  1. *1: w/ Rear Heater
  2. *2: w/o Rear Heater
  3. *3: w/o Entry and Start System
  4. *4: w/ Entry and Start System

  1. Disconnect the E36*1 E81*2 amplifier connector

  1. Disconnect the F10*3 or F111*4 panel connector.

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

    Standard Resistance:
    w/ Rear Heater
    Tester Connection
    		Condition
    		Specified Condition
    E36-21 (LIN1) - F10-5 (LIN1)*3
    		Always
    		Below 1 Ω
    E36-21 (LIN1) - F111-2 (LIN1)*4
    		Always
    		Below 1 Ω
    E36-21 (LIN1) - Body ground
    		Always
    		10 kΩ or higher
    w/o Rear Heater
    Tester Connection
    		Condition
    		Specified Condition
    E81-37 (LIN1) - F10-5 (LIN1)*3
    		Always
    		Below 1 Ω
    E81-37 (LIN1) - F111-2 (LIN1)*4
    		Always
    		Below 1 Ω
    E81-37 (LIN1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL BATTERY AND BODY GROUND)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.Lin Communication System Rear Heater Control Panel Lin Communication Malfunction

  1. Disconnect the panel connector.

  1. Measure the resistance and voltage according to the value(s) in the tables below.

    Standard Resistance:
    w/o Entry and Start System
    Tester Connection
    		Condition
    		Specified Condition
    F10-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    w/ Entry and Start System
    Tester Connection
    		Condition
    		Specified Condition
    F111-8 (GND) - Body ground
    		Always
    		Below 1 Ω

    Standard Voltage:
    w/o Entry and Start System
    Tester Connection
    		Switch Condition
    		Specified Condition
    F10-7 (IG+) - Body ground
    		Ignition switch ON
    		11 to 14 V
    w/ Entry and Start System
    Tester Connection
    		Switch Condition
    		Specified Condition
    F111-5 (IG+) - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *A
    		w/o Entry and Start System
    *B
    		w/ Entry and Start System
    *a
    		Front view of wire harness connector
    (to Air Conditioning Control)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.CHECK AIR CONDITIONING CONTROL ASSEMBLY

  1. Temporarily replace the air conditioning control with a new or normally functioning one.

    1. w/o Entry and Start System: Click here
    2. w/o Navigation System: Click here

  1. Check the that front air conditioning function is normal.

    OK:
    Front air conditioning function is normal.


NG
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (Click here)
OK

END (AIR CONDITIONING CONTROL ASSEMBLY IS DEFECTIVE)