Toyota Sequoia (2005). Manual - part 855

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BODY ELECTRICAL

TROUBLESHOOTING

BE–5

3409

Taillight does not go off when light control switch is in OFF posi-

tion.

1. TAILLIGHT Relay

2. Light Control Switch

3. Wire Harness

4. Body ECU

BE–27

BE–27

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Headlight does not come on when engine is running and light

control switch is in OFF position .

1. ECU–B Fuse

2. MAIN Fuse

3. HEAD Relay

4. DRL Fuse

5. DRL No. 4 Relay

6. DIMMER Relay

7. Parking Brake Switch

8. Wire Harness

9. Body ECU

BE–14

BE–14

BE–27

BE–14

BE–27

BE–55

BE–55

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FOG LIGHT SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.

Symptom

Suspect Area

See page

Fog light does not come on with light control switch is in HEAD

position.

(Headlight is normal.)

1. FOG Fuse

2. FOG LIGHT Relay

3. Fog Light Switch

4. Wire Harness

5. Body ECU

BE–14

BE–27

BE–34

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Fog light does not come on with light control switch is in HEAD

position.

(Headlight does not light).

1.

*1

 Other Parts

2. Wire Harness

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Only one light does not come on.

1. Bulb

2. Wire Harness

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*1: Inspect Headlight System
TURN SIGNAL AND HAZARD WARNING SYSTEM

Symptom

Suspect Area

See page

”Hazard” and ”Turn” do not light up.

1. GAUGE Fuse

2. TURN–HAZ Fuse

3. Ignition Switch

4. Turn Signal Flasher Relay

5. Wire Harness

BE–14

BE–14

BE–24

BE–24

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Hazard warning light does not light up.

(Turn is normal)

1. Hazard Warning Switch

2. Wire Harness

3. Turn Signal Flasher Relay

BE–36

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BE–36

Turn signal does not light up.

(Hazard is normal)

1. Turn Signal Switch

2. Wire Harness

3. Turn Signal Flasher Relay

BE–36

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BE–36

Turn signal does not light up in one direction.

1. Bulb

2. Wire Harness

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Only one bulb does not light up.

1. Bulb

2. Wire Harness

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INTERIOR LIGHT SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.

Symptom

Suspect Area

See page

All the interior lights do not come on.

1. DOME Fuse

2. Illumination Circuit

3. Body ECU

BE–14

DI–1759

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BE–6

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BODY ELECTRICAL

TROUBLESHOOTING

3410

The interior light does not come on when the driver’s door is

opened.

1. Driver’s Door Courtesy Light Switch

2. Wire Harness

3. Body ECU

BE–40

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The light does not come on when the passenger’s door is opened.

1. Passenger’s Door Courtesy Light Switch

2. Wire Harness

3. Body ECU

BE–40

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The light does not come on when the rear–right door is opened.

1. Rear–Right Door Courtesy Light Switch

2. Wire Harness

3. Body ECU

BE–40

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The light does not come on when the rear–left door is opened.

1. Rear–Left Door Courtesy Light Switch

2. Wire Harness

3. Body ECU

BE–40

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Only one of the bulbs comes on.

Bulb

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The illumination does not fade out when all the doors are closed.

1. Courtesy Light Switch

2. Body ECU

BE–40

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The illumination does not fade out immediately when all the doors

are locked within 15 seconds after they are closed.

1. Door Unlock Detection Switch

2. Body ECU

BE–79

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Front personal light does not come on.

1. Bulb

2. Front Personal Light

3. Wire Harness

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BE–40

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Room light does not come on.

1. Bulb

2. Room Light

3. Wire Harness

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BE–40

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Vanity light does not come on.

1. Bulb

2. Vanity Light

3. Wire Harness

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BE–40

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Luggage Room light does not come on.

1. Bulb

2. Back Door Courtesy Light Switch

3. Body ECU

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BE–40

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Courtesy light does not come on.

1. Bulb

2. Door Courtesy Light Switch

3. Body ECU

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BE–40

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Does not operate the illuminated entry

1. Illumination Circuit

2. Body ECU

DI–1759

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All functions of the body control system do not operate.

1. Power Source Circuit

2. Body ECU

DI–1700

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BACK–UP LIGHT SYSTEM

Symptom

Suspect Area

See page

Back–Up Light does not come on.

1. Bulb

2. GAUGE Fuse

3. BACK–UP LIGHT Relay

4. Instrument Panel J/B (IPO) Circuit

5. Ignition Switch

6. Wire Harness

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BE–14

BE–45

BE–20

BE–24

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Back–Up Light always remains on.

1. Park/Neutral Position Switch

2. BACK–UP LIGHT Relay

3. Wire Harness

DI–576

BE–45

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Only one light does not come on.

1. Bulb

2. Wire Harness

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BODY ELECTRICAL

TROUBLESHOOTING

BE–7

3411

STOP LIGHT SYSTEM

Symptom

Suspect Area

See page

Stop light does not come on.

1. STOP Fuse

2. Stop Light Switch

3. Wire Harness

BE–14

BE–47

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Stop light always come on.

1. Stop Light Switch

2. Wire Harness

BE–47

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Only one light does not come on.

1. Bulb

2. Wire Harness

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WIPER AND WASHER SYSTEM

Symptom

Suspect Area

See page

Wipers and washer do not operate.

1. AM1 Fuse

2. Wiper Switch

3. Wire Harness

BE–14

BE–49

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Wipers do not operate.

1. WIP Fuse

2. Wiper Switch

3. Wiper Motor

4. Wire Harness

BE–14

BE–49

BE–49

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Washer motor does not operate.

1. WSH Fuse

2. Washer Switch

3. Washer Motor

4. Wire Harness

BE–14

BE–49

BE–49

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Wipers do not operate when washer switch ON.

1. WSH Fuse

2. Washer Switch

3. Wiper Motor

4. Wire Harness

BE–14

BE–49

BE–49

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Washer fluid is not injected.

Washer Hose and Nozzle

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 When wiper switch is in HI position, the wiper blade is in contact

with the body.

 When the wiper switch is OFF, the wiper blade does not retract

or the retract position is wrong.

1. Wiper Motor *

1

2. Wire harness *

1

BE–49

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*

1

: Inspect wiper arm and blade set positions.

REAR WIPER AND WASHER SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.

Symptom

Suspect Area

See page

Rear Wiper does not operate.

1. Rear Wiper and Washer Switch

2. Rear Wiper Motor

3. Back Door ECU

4. Body ECU

BE–49

BE–49

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Rear Washer does not operate.

1. Rear Wiper and Washer Switch

2. Rear Washer Motor

3. Back Door ECU

4. Body ECU

BE–49

BE–49

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COMBINATION METER
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.

Symptom

Suspect Area

See page

Combination meter system abnormal operation.

See DIAGNOSIS SYSTEM

DI–1610

BE–8

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BODY ELECTRICAL

TROUBLESHOOTING

3412

DEFOGGER SYSTEM

Symptom

Suspect Area

See page

Rear window defogger does not operate.

1. HTR Fuse

2. DEFOG Fuse

3. DEFOG Relay

4. Defogger Switch (in A/C Panel Switch)

5. Defogger Wire

6. Wire Harness

BE–14

BE–14

BE–14

BE–65

BE–65

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Mirror defogger does not operate.

1. MIR–HTR Fuse

2. HTR Fuse

3. Mirror Heater Relay

4. Mirror Heater

5. Wire Harness

BE–14

BE–14

BE–65

BE–65

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POWER WINDOW CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.

Symptom

Suspect Area

See page

All the power windows do not operate.

(Power door lock system is normal.)

1. POWER MAIN Relay

2. Driver Door ECU (Power Window Master Switch)

3. Body ECU

4. Wire Harness

BE–69

DI–1788

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Only the driver’s window does not operate.

1. Power Window Motor

2. Power Window Pulse Sensor Circuit

3. Power Window Limit Switch Circuit

4. Driver Door ECU (Power Window Master Switch)

BE–69

DI–1803

DI–1800

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”Window lock function” does not operate.

Driver Door ECU (Power Window Master Switch)

BE–69

Only the rear LH window does not operate.

1. Power Window Motor

2. Power Window Switch

3. Body ECU

BE–69

BE–69

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Only the rear RH window does not operate.

1. Power Window Motor

2. Power Window Switch

3. Body ECU

BE–69

BE–69

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Only the front passenger’s window does not operate.

1. Power Window Motor

2. Power Window Pulse Sensor Circuit

3. Power Window Limit Switch Circuit

4. Passenger Door ECU

BE–69

DI–1841

DI–1838

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The Key related power window operations do not operate with

driver side door key cylinder.

(Master switch operation is normal.)

1. Door Key Lock and Unlock Switch Circuit

2. Driver Door ECU (Power Window Master Switch)

DI–1791

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” Auto up ” or ” Auto down ” does not operate. *1

1. Power Window Pulse Sensor Circuit

2. Power Window Limit Switch Circuit

3. Driver Door ECU (Power Window Master Switch)

DI–1803

DI–1800

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*

1

: ” Auto up ” or ” Auto down ” may not function when the manual switch is pressed and held for 2 sec. or

more with the window glass fully open or closed. In this case, by performing a sequence of the window glass
operations (full open, fully close and then half open), the function can be restored. If not, replace the driver
door ECU or passenger door ECU.