Meter / Gauge System Meter Illumination Does Not Dim At Night

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Meter Gauge Display. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

READ VALUE USING INTELLIGENT TESTER (LIGHT CONTROL RHEOSTAT)

INSPECT LIGHT CONTROL RHEOSTAT

CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT)

METER / GAUGE SYSTEM - Meter Illumination does not Dim at Night


DESCRIPTION

w/ Multi-information Display:
If the dimmer switch is turned to TAIL, HEAD or AUTO, the main body ECU sends a TAIL relay signal, panel light illumination signal, panel relay signal, and TAIL cancel switch off signal to the combination meter. Then the meter and accessory meter become dim.
HINT:
TAIL cancel switch: When the headlights are illuminated and the TAIL cancel switch is turned on, the meter does not dim.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Meter Gauge Display.Meter / Gauge System.Meter / Gauge System Meter Illumination Does Not Dim At Night


INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    CAN communication system DTC is not output
    		A
    CAN communication system (for LHD) DTC is output
    		B
    CAN communication system (for RHD) DTC is output
    		C


B
Go to CAN COMMUNICATION SYSTEM (Click here)

C
Go to CAN COMMUNICATION SYSTEM (Click here)
A


2.READ VALUE USING INTELLIGENT TESTER (LIGHT CONTROL RHEOSTAT)

  1. Operate the intelligent tester according to the display and select Data List (Click here).

    Combination Meter
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Tail Cancel SW*
    		TAIL cancel switch condition/ON or OFF
    		ON: TAIL cancel switch ON
    OFF: TAIL cancel switch OFF
    		-
    Rheostat value
    		Light control rheostat switch input/Min.: 0, Max.: 100
    		Light control rheostat switch is fully turned right (0) → fully turned left (100)
    		Unit: %
    HINT:
    *: w/ TAIL Cancel Switch
    OK:
    Light brightness can be changed within specified range by manual operation.


NG
Go to step 3
OK

REPLACE COMBINATION METER ASSEMBLY (Click here)

3.INSPECT LIGHT CONTROL RHEOSTAT


  1. Inspect the light control rheostat.


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Meter Gauge Display.Meter / Gauge System.Meter / Gauge System Meter Illumination Does Not Dim At Night

    1. Remove the light control rheostat (Click here).

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

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      6 (TC) - 1 (E)
      		TAIL cancel switch off → on
      		10 kΩ or higher → Below 1 Ω
      5 (T) - 1 (E)
      		Always
      		10 kΩ or higher
      7 (TR) - 1 (E)
      		Light control rheostat fully turned right → fully turned left
      		10 kΩ or higher → Below 100 Ω

  1. Inspect the trip switch.

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

      Standard Resistance:
      Tester Connection
      		Switch Condition
      		Specified Condition
      4 (A/B) - 1 (E)
      		TRIP switch on (Pushed)
      		Below 200 Ω
      TRIP switch off (Not Pushed)
      		1 MΩ or higher


NG
REPLACE LIGHT CONTROL RHEOSTAT (Click here)
OK


4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Meter Gauge Display.Meter / Gauge System.Meter / Gauge System Meter Illumination Does Not Dim At Night

  1. Disconnect the E8 meter connector.

  1. Disconnect the E9 rheostat connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E8-18 (ILL+) - E9-5 (T)
    		Always
    		Below 1 Ω
    E8-19 (TR) - E9-7 (TR)
    E8-23 (E2) - E9-1 (E)
    E8-20 (TC) - E9-6 (TC)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (Click here)