Meter / Gauge System - Meter Illumination Does Not Dim At Night

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - METER / GAUGE / DISPLAY

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

Meter / Gauge System - Meter Illumination Does Not Dim At Night. METER / GAUGE / DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

Check for DTCs ().

Result
ResultProceed to
CAN communication system DTC is not outputA
CAN communication system (for LHD) DTC is outputB
CAN communication system (for RHD) DTC is outputC
B
Go to CAN COMMUNICATION SYSTEM ()
C
Go to CAN COMMUNICATION SYSTEM ()
A
2.READ VALUE USING INTELLIGENT TESTER (LIGHT CONTROL RHEOSTAT)

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

Combination Meter
Tester DisplayMeasurement Item/RangeNormal ConditionDiagnostic Note
Tail Cancel SW*TAIL cancel switch condition/ON or OFFON: TAIL cancel switch ON
OFF: TAIL cancel switch OFF		-
Rheostat valueLight control rheostat switch input/Min.: 0, Max.: 100Light 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 ()
3.INSPECT LIGHT CONTROL RHEOSTAT

Inspect the light control rheostat.

Meter / Gauge System - Meter Illumination Does Not Dim At Night. METER / GAUGE / DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Remove the light control rheostat ().

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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified Condition
    6 (TC) - 1 (E)TAIL cancel switch off → on10 kΩ or higher → Below 1 Ω
    5 (T) - 1 (E)Always10 kΩ or higher
    7 (TR) - 1 (E)Light control rheostat fully turned right → fully turned left10 kΩ or higher → Below 100 Ω

Inspect the trip switch.


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

  • Standard Resistance:
  • Tester ConnectionSwitch ConditionSpecified 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 ()
OK
4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT)
Meter / Gauge System - Meter Illumination Does Not Dim At Night. METER / GAUGE / DISPLAY. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the E8 meter connector.

Disconnect the E9 rheostat connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    E8-18 (ILL+) - E9-5 (T)AlwaysBelow 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 ()