Lighting System Problem Symptoms Table

Lighting System -- Problem Symptoms Table


  1. *1: w/ Entry and Start System
  2. *2: w/o Entry and Start System
  3. *3: w/ Interior Foot Light
  4. *4: w/ Door Illumination
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Illuminated Entry System
Symptom
Suspected Area
See page
Illuminated entry system does not operate
DOME fuse
-
Entry and start system (for entry function)*1
LandCruiser RM000000XU70G9X.html
Wireless door lock control system (w/o entry and start system)*2
LandCruiser RM000001WY702OX.html
Door courtesy switch circuit
LandCruiser RM0000011T30D0X.html
Back door courtesy switch circuit
LandCruiser RM000002WL802EX.html
Harness or connector
-
Main body ECU (Multiplex network body ECU)
-

Interior Light System
Symptom
Suspected Area
See page
Map light does not illuminate
Map light bulb
-
Map light assembly
LandCruiser RM000003YO701EX.html
Harness or connector
-
No. 1 room light does not illuminate
No. 1 room light bulb
-
No. 1 room light assembly
-
Harness or connector
-
No. 2 room light does not illuminate
No. 2 room light bulb
-
No. 2 room light assembly
-
Harness or connector
-
Interior foot light does not illuminate*3
Active Test (Step Light Operation)
LandCruiser RM000000PKV0J5X.html
Harness or connector
-
Main body ECU (Multiplex network body ECU)
-
Door inside handle illumination light does not illuminate*4
Front door inside handle illumination light assembly
LandCruiser RM000003YNN02NX.html
Rear door inside handle illumination light assembly
LandCruiser RM0000045ET00FX.html
Harness or connector
-
Door pocket illumination does not illuminate*4
No. 2 interior illumination light sub-assembly (for front door)
LandCruiser RM000003YNN02NX.html
No. 2 interior illumination light sub-assembly (for rear door)
LandCruiser RM0000045ET00FX.html
Harness or connector
-
Ornament illumination does not illuminate*4
Door trim board sub-assembly
-
Harness or connector
-
Door illumination light does not illuminate*4
Main body ECU (Multiplex network body ECU)
-
Harness or connector
-

Ignition Key Cylinder Light System (w/o Entry and Start System)
Symptom
Suspected Area
See page
Ignition key cylinder light does not illuminate
Transponder key amplifier
LandCruiser RM000003YNZ01DX.html
Harness or connector
-
Main body ECU (Multiplex network body ECU)
-

Side Step Light System (w/ Side Step Light)
Symptom
Suspected Area
See page
Side step light does not illuminate
Side step light bulb
-
Harness or connector
-
Main body ECU (Multiplex network body ECU)
-

Vanity Light System
Symptom
Suspected Area
See page
Vanity light does not illuminate
Vanity light bulb
-
Visor assembly
-
Harness or connector
-

Glove Box Light System
Symptom
Suspected Area
See page
Glove box light does not illuminate
Harness or connector
-

Interior Light Switch System (w/ Door Illumination)
Symptom
Suspected Area
See page
Interior light switch does not operate
Interior light switch signal circuit
LandCruiser RM000001TA203BX.html

Battery Saving Control System
Symptom
Suspected Area
See page
Battery saving function does not operate
Door courtesy switch circuit
LandCruiser RM0000011T30D0X.html
Back door courtesy switch circuit
LandCruiser RM000002WL802EX.html
IG signal circuit
LandCruiser RM0000011SQ0LWX.html
Main body ECU (Multiplex network body ECU)
-
Battery saving function (interior light auto cut function) does not operate
DOME relay
LandCruiser RM000005IYJ004X.html
Main body ECU (Multiplex network body ECU)
-
Harness or connector
-

Center Console Spot Light System
Symptom
Suspected Area
See page
Center console spot light does not illuminate
Overhead console illumination light circuit
LandCruiser RM000001TA103DX.html
IG signal circuit
LandCruiser RM0000011SQ0LWX.html
ACC signal circuit
LandCruiser RM0000011SQ0LXX.html
Main body ECU (Multiplex network body ECU)
-