| Last Modified: 11-29-2007 | 1.6 T | |
| Service Category: Vehicle Exterior | Section: Lighting (ext) | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002WKO006X |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) | ||
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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Headlight System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
"Low beam" does not turn on (One side) |
Headlight bulb (Low) |
|
|
Headlight signal circuit |
|
|
|
"Low beam" does not turn on (Both sides) |
Light control switch circuit |
|
|
Headlight signal circuit |
|
|
|
Main body ECU |
|
|
|
"High beam" does not turn on (One side) |
Headlight bulb (High) |
|
|
Headlight (HI-BEAM) circuit |
|
|
|
"High beam" does not turn on (Both sides) |
Light control switch circuit |
|
|
Headlight (HI-BEAM) circuit |
|
|
|
Main body ECU |
|
|
|
"Flash" does not turn on (Low beam and Hi-beam are normal) |
Light control switch circuit |
|
|
Main body ECU |
|
|
|
Headlight is dark |
Headlight bulb |
|
Taillight System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Taillight does not turn on (All) |
Light control switch circuit |
|
|
Main body ECU (TAIL relay) |
|
|
|
Taillight circuit |
|
|
|
Front parking light does not turn on |
Front parking light bulb |
|
|
Taillight circuit |
|
|
|
Main body ECU |
|
|
|
Front side marker light does not turn on |
Front side marker light bulb |
|
|
Taillight circuit |
|
|
|
Main body ECU |
|
|
|
Taillight does not turn on |
Taillight bulb |
|
|
Rear combination light assembly |
|
|
|
Taillight circuit |
|
|
|
Main body ECU |
|
|
|
License plate light does not turn on |
License plate light bulb |
|
|
Taillight circuit |
|
|
|
Main body ECU |
|
Light Auto Turn Off System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Light auto turn off system does not operate |
Light control switch circuit |
|
|
Ignition switch (for 2UZ-FE) |
|
|
|
Ignition switch (for 3UR-FE) |
|
|
|
Door courtesy switch circuit |
|
|
|
Main body ECU |
|
Daytime Running Light System*1
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Daytime running light system does not operate (Turn signal light normal) |
Ignition switch (for 2UZ-FE) |
|
|
Ignition switch (for 3UR-FE) |
|
|
|
Light control switch circuit |
|
|
|
CAN communication system |
|
|
|
Parking brake switch |
|
|
|
DRL relay circuit |
|
|
|
Main body ECU |
|
Front Fog Light System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Front fog light does not turn on (All) |
Light control switch circuit |
|
|
Front fog light circuit |
|
|
|
Main body ECU |
|
|
|
Only one front fog light does not turn on |
Front fog light bulb |
|
|
Front fog light circuit |
|
Turn Signal and Hazard Warning System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Turn signal does not turn on (All) |
Headlight dimmer switch circuit |
|
|
Turn signal light circuit |
|
|
|
Turn signal flasher |
|
|
|
Front turn signal light does not turn on |
Front turn signal light bulb |
|
|
Turn signal light circuit |
|
|
|
Rear turn signal light does not turn on |
Rear turn signal light bulb |
|
|
Rear combination light assembly |
|
|
|
Side turn signal light does not turn on*2 |
Side turn signal light |
|
|
Outer rear view mirror assembly |
|
|
|
Turn signal light circuit |
|
|
|
Hazard warning light does not turn on (Turn signal light normal) |
Hazard warning switch circuit |
|
|
Turn signal flasher |
|
Stop Light System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Stop light does not turn on (All) |
STOP fuse |
|
|
Stop light switch |
|
|
|
Harness and connector |
- |
|
|
Only one stop light does not turn on |
Stop light bulb |
|
|
Rear combination light assembly |
|
|
|
Harness and connector |
|
|
|
High mount stop light does not turn on |
High mounted stop light assembly (w/ rear spoiler) |
|
|
High mounted stop light assembly (w/o rear spoiler) |
|
|
|
Harness and connector |
- |
Back-up Light System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Back-up light does not turn on (All) |
BK/UP LP fuse |
|
|
Park/neutral position switch (for 2UZ-FE two wheel drive model) |
|
|
|
Park/neutral position switch (for 2UZ-FE four wheel drive model) |
|
|
|
Park/neutral position switch (for 3UR-FE two wheel drive model) |
|
|
|
Park/neutral position switch (for 3UR-FE four wheel drive model) |
|
|
|
Harness and connector |
|
|
|
Only one back-up light does not turn on |
Back-up light bulb |
|
|
Rear light assembly |
|
|
|
Harness and connector |
|
Trailer Towing
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Trailer towing does not operate |
TOWING fuse |
|
|
TOW TAIL fuse |
|
|
|
TOW BRK fuse |
|
|
|
TOWING TAIL relay |
|
|
|
SUB BATTERY relay |
|
|
|
Trailer socket |
|
|
|
Turn signal flasher |
|
|
|
Harness and connector |
- |
Puddle Light System*3
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Puddle light does not turn on (All) |
Operation check |
|
|
Door mirror foot light circuit |
|
|
|
CAN communication system |
|
|
|
Main Body ECU |
|
|
|
Mirror control ECU |
|
|
|
Only one puddle light does not turn on |
Puddle light bulb |
|
|
Outer rear view mirror assembly |
|
|
|
Door mirror foot light circuit |
|
*1: w/ Daytime running light system
*2: w/ Side turn signal light
*3: w/ Puddle light
|
|