Toyota Sequoia (2005). Manual - part 881

BE268–04

I08215

Lifter

Up

Down

Reclining

Tilt

Up

Down

Front

Back

Forward

Rear

I18601

Forward

Front

Rear

Back

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

BE–109

3513

INSPECTION

1.

INSPECT DRIVER’S POWER SEAT SWITCH CONTI-
NUITY (w/o Driving Position Memory)

Slide Switch:

Switch position

Tester connection

Specified condition

FRONT

1 – 9, 4 – 6

Continuity

OFF

4 – 6 – 9

Continuity

BACK

1 – 6, 4 – 9

Continuity

Front Tilt Switch:

Switch position

Tester connection

Specified condition

UP

1 – 10, 4 – 5

Continuity

OFF

4 – 5 – 10

Continuity

DOWN

1 – 5, 4 – 10

Continuity

Rear Lifter Switch:

Switch position

Tester connection

Specified condition

UP

1 – 7, 4 – 8

Continuity

OFF

4 – 7 – 8

Continuity

DOWN

1 – 8, 4 – 7

Continuity

Reclining Switch:

Switch position

Tester connection

Specified condition

FORWARD

1 – 3, 2 – 4

Continuity

OFF

2 – 3 – 4

Continuity

REAR

1 – 2, 3 – 4

Continuity

If continuity is not as specified, replace the switch.

2.

INSPECT PASSENGER’S POWER SEAT SWITCH
CONTINUITY

Slide Switch:

Switch position

Tester connection

Specified condition

FRONT

1 – 9, 4 – 6

Continuity

OFF

4 – 6 – 9

Continuity

BACK

1 – 6, 4 – 9

Continuity

Reclining Switch:

Switch position

Tester connection

Specified condition

FORWARD

1 – 3, 2 – 4

Continuity

OFF

2 – 3 – 4

Continuity

REAR

1 – 2, 3 – 4

Continuity

If continuity is not as specified, replace the switch.

I27710

Forward

Release

I07253

(a)

(b)

2

1

1

2

I11936

2

1

I11937

2

1

I07254

(a)

(b)

2

1

1

2

BE–110

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

3514

3.

INSPECT DRIVER’S LUMBAR SUPPORT CONTROL
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

Forward

1 – 2, 3 – 4

Continuity

OFF

1 – 2, 4 – 5

Continuity

Release

1 – 3, 4 – 5

Continuity

If continuity is not as specified, replace the switch.

4.

INSPECT SLIDE MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
motor turns clockwise.

(b)

Reverse the polarity, check that the motor turns counter-
clockwise.

If operation is not as specified, replace the seat adjuster.

5.

INSPECT SLIDE MOTOR PTC THERMISTOR OPERA-
TION
( ): Passenger Side

(a)

Connect the positive (+) lead from the battery to terminal
2 (1), the positive (+) lead from the ammeter to terminal
1 (2) and the negative (–) lead to the battery negative (–)
terminal, then move the seat cushion to the rear position.

(b)

Continue to apply voltage, check that current changes to
less than 1 ampere within 4 to 90 seconds.

(c)

Disconnect the leads from terminals.

(d)

Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 (2) and the negative (–)
lead to terminal 2 (1), check that the seat cushion begins
to move forwards.

If operation is not as specified, replace the seat adjuster.

6.

INSPECT FRONT TILT MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
motor turns clockwise.

(b)

Reverse the polarity, check that the motor turns counter-
clockwise.

If operation is not as specified, replace the seat adjuster.

N22086

2

1

N22087

2

1

I07255

(a)

1

(b)

2

2

1

I11940

2

1

I11941

2

1

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

BE–111

3515

7.

INSPECT FRONT TILT MOTOR PTC THERMISTOR OP-
ERATION

(a)

Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (–) lead to the battery negative (–) terminal,
then move the seat cushion to the highest position.

(b)

Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.

(c)

Disconnect the leads from the terminals.

(d)

Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (–)
lead to terminal 1, check that the seat cushion begins to
descend.

If operation is not as specified, replace the seat adjuster.

8.

INSPECT LIFTER MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
motor turns clockwise.

(b)

Reverse the polarity, check that the motor turns counter-
clockwise.

If operation is not as specified, replace the seat adjuster.

9.

INSPECT LIFTER MOTOR PTC THERMISTOR OPERA-
TION

(a)

Connect the positive (+) lead from the battery to terminal
1, the positive (+) lead from the ammeter to terminal 2 and
the negative (–) lead to the battery negative (–) terminal,
then move the seat cushion to the lowest position.

(b)

Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.

(c)

Disconnect the leads from the terminals.

(d)

Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 2 and the negative (–)
lead to terminal 1, check that the seat cushion begins to
ascend.

If operation is not as specified, replace the seat adjuster.

I07256

(a)

(b)

2

1

1

2

N21868

2

1

N21869

2

1

I04163

2

1

I05473

2

1

BE–112

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

3516

10.

INSPECT RECLINING MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
motor turns clockwise.

(b)

Reverse the polarity, check that the motor turns counter-
clockwise.

If operation is not as specified, replace the seat adjuster.

11.

INSPECT RECLINING MOTOR PTC THERMISTOR OP-
ERATION

(a)

Connect the positive (+) lead from the battery to terminal
2, the positive (+) lead from the ammeter to terminal 1 and
the negative (–) lead to the battery negative (–) terminal,
then recline the seat back to the most forward position.

(b)

Continue to apply voltage, check that the current changes
to less than 1 ampere within 4 to 90 seconds.

(c)

Disconnect the leads from the terminals.

(d)

Approximately 60 seconds later, connect the positive (+)
lead from the battery to terminal 1 and the negative (–)
lead to terminal 2, check that the seat back begins to fall
backward.

If operation is not as specified, replace the seat adjuster.

12.

INSPECT LUMBAR SUPPORT MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2, check that the
lumbar support moves to release side.

(b)

Reverse the polarity, check that the lumbar support
moves forward.

If operation is not as specified, replace the seat adjuster.