Lighting System Light Control Switch Circuit

Vehicle Exterior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Lighting (Ext). Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (HEADLIGHT DIMMER SWITCH)

INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU AND BODY GROUND)

LIGHTING SYSTEM - Light Control Switch Circuit


DESCRIPTION

The main body ECU receives light control switch, dimmer switch and front fog light switch information signals from the headlight dimmer switch.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System.Lighting System Light Control Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (HEADLIGHT DIMMER SWITCH)

  1. Operate the intelligent tester according to the display and select the "Data List".

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Dimmer SW
    		Dimmer switch signal/ON or OFF
    		ON: Dimmer switch on
    OFF: Dimmer switch off
    		-
    Passing Light SW
    		Passing light switch signal/ON or OFF
    		ON: Passing light switch on
    OFF: Passing light switch off
    		-
    Front Fog Light SW
    		Front fog light switch signal/ON or OFF
    		ON: Front fog light switch on
    OFF: Front fog light switch off
    		-
    Rear Fog Light SW
    		Rear fog light switch signal/ON or OFF
    		ON: Rear fog light switch on
    OFF: Rear fog light switch off
    		-
    Auto Light SW
    		Auto light switch signal/ON or OFF
    		ON: Auto light switch on
    OFF: Auto light switch off
    		-
    Head Light SW (Head)
    		Headlight switch signal/ON or OFF
    		ON: Headlight switch (Head) on
    OFF: Headlight switch (Head) off
    		-
    Head Light SW (Tail)
    		Taillight switch signal/ON or OFF
    		ON: Headlight switch (Tail) on
    OFF: Headlight switch (Tail) off
    		-
    OK:
    When combination light switch operation is performed, the result will be the same as above.


NG
Go to step 2
OK

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

2.INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System.Lighting System Light Control Switch Circuit

  1. Remove the headlight dimmer switch (Click here).

  1. for LH Side:

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

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      18 (T) - 12 (EL)
      		Light control switch tail
      		Below 1 Ω
      20 (H) - 12 (EL)
      		Light control switch head
      18 (T) - 12 (EL)
      19 (A) - 12 (EL)
      		Light control switch AUTO
      4 (BFG) - 3 (LFG)
      		Front fog light switch on
      2 (B) - 3 (LFG)
      		Rear fog light switch on
      17 (HF) - 12 (EL)
      		Dimmer switch flash
      11 (HU) - 12 (EL)
      		Dimmer switch hi beam


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System.Lighting System Light Control Switch Circuit

  1. for RH Side:

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      13 (T) - 19 (EL)
      		Light control switch tail
      		Below 1 Ω
      11 (H) - 19 (EL)
      		Light control switch head
      13 (T) - 19 (EL)
      12 (AUTO) - 19 (EL)
      		Light control switch AUTO
      7 (BFG) - 8 (LFG)
      		Front fog light switch on
      9 (B) - 8 (LFG)
      		Rear fog light switch on
      14 (HF) - 19 (EL)
      		Dimmer switch flash
      20 (HU) - 19 (EL)
      		Dimmer switch hi beam


NG
REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU AND BODY GROUND)

  1. Disconnect the E14 switch connector.



  1. for LH Side:



    1. Disconnect the E1, E2 and 2D ECU connectors.


      Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System.Lighting System Light Control Switch Circuit

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E14-4 (BFG) - E2-28 (FFOG)
      		Always
      		Below 1 Ω
      E14-2 (B) - E2-9 (RFGO)
      E14-19 (A) - E1-21 (A)
      E14-20 (H) - E2-17 (HEAD)
      E14-18 (T) - E1-23 (TAIL)
      E14-17 (HF) - E1-13 (HF)
      E14-11 (HU) - 2D-13 (HU)
      E14-12 (EL) - Body ground
      E14-3 (LFG) - Body ground
      E14-4 (BFG) - Body ground
      		Always
      		10 kΩ or higher
      E14-2 (B) - Body ground
      E14-19 (A) - Body ground
      E14-20 (H) - Body ground
      E14-18 (T) - Body ground
      E14-17 (HF) - Body ground
      E14-11 (HU) - Body ground


  1. for RH Side:



    1. Disconnect the E1, E2 and 2D ECU connectors.


      Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System.Lighting System Light Control Switch Circuit

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E14-7 (BFG) - E2-28 (FFOG)
      		Always
      		Below 1 Ω
      E14-9 (B) - E2-9 (RFOG)
      E14-12 (A) - E1-21 (A)
      E14-11 (H) - E2-17 (HEAD)
      E14-13 (T) - E1-23 (TAIL)
      E14-14 (HF) - E1-13 (HF)
      E14-20 (HU) - 2D-13 (HU)
      E14-19 (EL) - Body ground
      E14-8 (LFG) - Body ground
      E14-7 (BFG) - Body ground
      		Always
      		10 kΩ or higher
      E14-9 (B) - Body ground
      E14-12 (A) - Body ground
      E14-11 (H) - Body ground
      E14-13 (T) - Body ground
      E14-14 (HF) - Body ground
      E14-20 (HU) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU