Lighting System Back Door Courtesy Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (DOOR COURTESY LIGHT SWITCH)

INSPECT BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY)

INSPECT BACK WINDOW LOCK ASSEMBLY (GLASS HATCH COURTESY LIGHT SWITCH)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK WINDOW LOCK ASSEMBLY AND BODY GROUND)

LIGHTING SYSTEM - Back Door Courtesy Switch Circuit


DESCRIPTION

The main body ECU receives a door open/closed signal from each door courtesy light switch.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Int).Lighting System.Lighting System  Back Door Courtesy Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (DOOR COURTESY LIGHT SWITCH)
  1. Using the intelligent tester, read the Data List (LandCruiser RM000000PKV0J5X.html).

    Main Body
    Tester Display
    Measurement Item/Range
    Normal Condition
    Diagnostic Note
    Back Door Courtesy SW
    Back door courtesy switch signal / ON or OFF
    ON: Back door open
    OFF: Back door closed
    -
    Glass Hatch Courtesy Switch*
    Glass hatch courtesy switch signal / ON or OFF
    ON: Glass hatch open
    OFF: Glass hatch closed
    -
    1. *: w/ Glass Hatch Opener System
    OK:
    The display is as specified in the normal condition column.
    Result
    Result
    Proceed to
    OK
    A
    NG (Back door courtesy light switch does not operate)
    B
    NG (Glass hatch courtesy light switch does not operate)
    C


B
Go to step 2

C
Go to step 4
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000002CE20QGX.html)

2.INSPECT BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155
  1. Remove the back door courtesy light switch (LandCruiser RM000003YNI01FX.html).

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

    Standard Resistance:
    Tester Connection
    Switch Condition
    Specified Condition
    1 - Switch body
    Pin not pushed
    Below 1 Ω
    Pin pushed
    10 kΩ or higher


NG
REPLACE BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY (LandCruiser RM000003YNI01FX.html)
OK


3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY)
  1. Disconnect the G64 main body ECU connector.

  1. Disconnect the R9 back door courtesy light switch connector.

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

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    G64-19 (BCTY) - R9-1
    Always
    Below 1 Ω
    G64-19 (BCTY) - Body ground
    Always
    10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)

4.INSPECT BACK WINDOW LOCK ASSEMBLY (GLASS HATCH COURTESY LIGHT SWITCH)


  1. Remove the back window lock (LandCruiser RM0000045AR00EX.html).


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Int).Lighting System.Lighting System  Back Door Courtesy Switch Circuit


    Text in Illustration
    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155
    Open
    -
    -
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    1 (-) - 2 (+)
    Open
    Below 1 Ω
    Closed
    10 kΩ or higher


NG
REPLACE BACK WINDOW LOCK ASSEMBLY (LandCruiser RM0000045AW00FX.html)
OK


5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK WINDOW LOCK ASSEMBLY AND BODY GROUND)
  1. Disconnect the G64 main body ECU connector.

  1. Disconnect the X4 back window lock connector.

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

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    G64-1 (GCTY) - X4-2 (+)
    Always
    Below 1 Ω
    G64-1 (GCTY) - Body ground
    Always
    10 kΩ or higher
    X4-1 (-) - Body ground
    Always
    Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (LandCruiser RM000003WBO05FX.html)