Lighting System -- Problem Symptoms Table |
- 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.
| Symptom | Suspected Area | See page |
| Low beam headlight on one side does not illuminate | H-LP LH LO fuse or H-LP RH LO fuse | - |
| Headlight bulb (Low) [for Halogen Headlight] | - | |
| Harness or connector | - | |
| Headlight unit | - | |
| Both left and right low beam headlights do not illuminate | H-LP MAIN fuse | - |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| Headlight relay circuit | LandCruiser RM000000ZBM0ATX.html | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| High beam headlight on one side does not illuminate | H-LP LH HI fuse or H-LP RH HI fuse | - |
| Headlight bulb (High) | - | |
| Headlight unit | - | |
| Harness or connector | - | |
| Both left and right high beam headlights do not illuminate (low beam headlights are normal) | H-LP HI fuse | - |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| Headlight (High beam) circuit | LandCruiser RM000001A7L0B2X.html | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| High beam headlights do not illuminate with "High Flash" function (passing function) | Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html |
| Main body ECU (Multiplex network body ECU) | - | |
| Low beam headlights or high beam headlights do not turn off | Headlight dimmer switch assembly | LandCruiser RM000003QJJ018X.html |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - |
| Symptom | Suspected Area | See page |
| Clearance light does not illuminate | Clearance light bulb [for Halogen Headlight] | - |
| Headlight unit | - | |
| Harness or connector | - | |
| Taillight does not illuminate | Rear combination light assembly | LandCruiser RM000003S7S02SX.html |
| Harness or connector | - | |
| License plate light does not illuminate | License plate light bulb | - |
| License plate light assembly | - | |
| Harness or connector | - | |
| All lights do not illuminate | TAIL fuse | - |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| Taillight relay circuit | LandCruiser RM000001MEH0G5X.html | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - |
| Symptom | Suspected Area | See page |
| Stop light on one side does not illuminate | Rear combination light assembly | LandCruiser RM000003S7S02SX.html |
| Harness or connector | - | |
| Center stop light does not illuminate | Center stop light assembly | LandCruiser RM000003S8N021X.html |
| Harness or connector | - | |
| All lights do not illuminate | STOP fuse | - |
| Stop light circuit | LandCruiser RM000003UIG013X.html | |
| Harness or connector | - | |
| Stop light control relay | - |
| Symptom | Suspected Area | See page |
| Front fog light on one side does not illuminate | Front fog light bulb | - |
| Harness or connector | - | |
| Both left and right front fog lights do not illuminate (taillight is normal) | FR FOG fuse | - |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| Front fog light circuit | LandCruiser RM0000011T40A4X.html | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - |
| Symptom | Suspected Area | See page |
| Rear fog light on one side does not illuminate | Rear fog light bulb | - |
| Harness or connector | - | |
| Both left and right rear fog lights do not illuminate (taillight is normal) | RR FOG fuse | - |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| Rear fog light circuit | LandCruiser RM000001A6405BX.html | |
| Harness or connector | - | |
| Main body ECU (Multiplex network body ECU) | - |
| Symptom | Suspected Area | See page |
| Hazard warning lights do not operate (turn signal lights are normal) | TRN-HAZ fuse | - |
| Hazard warning switch circuit | LandCruiser RM000002ZNJ02MX.html | |
| Harness or connector | - | |
| Turn signal flasher assembly | LandCruiser RM000003QVF01KX.html | |
| Turn signal lights do not operate (hazard warning lights are normal) | ECU-IG NO. 2 fuse | - |
| Headlight dimmer switch assembly (Turn signal light switch) | LandCruiser RM000003QJJ018X.html | |
| Turn signal flasher assembly | LandCruiser RM000003QVF01KX.html | |
| Harness or connector | - | |
| Hazard warning lights and turn signal lights do not operate | TRN-HAZ fuse and ECU-IG NO. 2 fuse | - |
| Turn signal flasher assembly | LandCruiser RM000003QVF01KX.html | |
| Harness or connector | - | |
| Turn signal lights do not operate in one direction | Headlight dimmer switch assembly (Turn signal light switch) | LandCruiser RM000003QJJ018X.html |
| Turn signal flasher assembly | LandCruiser RM000003QVF01KX.html | |
| Harness or connector | - | |
| Front turn signal light does not illuminate | Front turn signal light bulb | - |
| Headlight unit | - | |
| Harness or connector | - | |
| Side turn signal light does not illuminate | Side turn signal light assembly | LandCruiser RM000003S7S02RX.html |
| Outer rear view mirror assembly | LandCruiser RM000003S7S02RX.html | |
| Harness or connector | - | |
| Rear turn signal light does not illuminate | Rear turn signal light bulb | - |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
| Back-up light on one side does not illuminate | Back-up light bulb | - |
| Harness or connector | - | |
| Both left and right back-up lights do not illuminate | ECU-IG NO. 2 fuse | - |
| BK/LP relay | - | |
| Park/neutral position switch (for AC60F Automatic Transmission) | LandCruiser RM000000OD401HX.html | |
| Park/neutral position switch (for A750F Automatic Transmission) | LandCruiser RM000002BKX04GX.html | |
| Back-up light switch assembly (for G52F Manual Transmission) | LandCruiser RM00000471B00HX.html | |
| Back-up light switch assembly (for RA61F Manual Transmission) | LandCruiser RM0000047AP005X.html | |
| Back-up light switch assembly (for R150F Manual Transmission) | LandCruiser RM0000046SU00QX.html | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
| Automatic light control system does not operate | Check DTCs | LandCruiser RM000000PKT0AFX.html |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| IG signal circuit | LandCruiser RM0000011SQ0LWX.html | |
| Main body ECU (Multiplex network body ECU) | - |
| Symptom | Suspected Area | See page |
| Light auto turn-off system does not operate | Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html |
| 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) | - |
| Symptom | Suspected Area | See page |
| Manual headlight leveling control system does not operate | Headlight leveling switch | LandCruiser RM000003SAG00VX.html |
| Headlight leveling motor | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
| Daytime running light system does not operate (headlight and taillight are normal) | Daytime running light relay circuit | LandCruiser RM000000ZBS05EX.html |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| IG signal circuit | LandCruiser RM0000011SQ0LWX.html | |
| DRL fuse | - | |
| DRL relay | - | |
| Driver side junction block assembly | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
| Headlight ON system does not operate (headlight and taillight are normal) | Daytime running light relay circuit | LandCruiser RM000000ZBS05EX.html |
| Headlight dimmer switch circuit | LandCruiser RM0000011M30CFX.html | |
| IG signal circuit | LandCruiser RM0000011SQ0LWX.html | |
| DRL fuse | - | |
| DRL relay | - | |
| Driver side junction block assembly | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
| Headlight Leveling does not operate | Check for DTCs | LandCruiser RM000000PKT0AFX.html |
| Headlight swivel ECU assembly power source | LandCruiser RM000000PKM0A5X.html | |
| Headlight swivel ECU assembly | - | |
| Headlight beam level control system warning light does not come on when turning the ignition switch to ON | Combination meter assembly | - |
| Headlight swivel ECU assembly | - |