Lexus GS300/400 (2000 year). Manual — part 52

BE0GK–06

I01367

Driver Side Junction Block

P SEAT (D) Fuse

Power Seat Switch

Lumbar Support Switch

Lifter Motor

Front Vertical Motor

Slide Motor

Reclining Motor

Power Seat Switch

Lumbar Support Switch

Passenger Side Junction Block

P SEAT (P) Fuse

Lumbar Support Motor

Front Vertical Motor

Lumbar Support Switch

Lifter Motor

BE–166

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

2467

POWER SEAT CONTROL SYSTEM

LOCATION

BE0GL–03

I04159

Lifter

Up

Down

Reclining

Front Vertical

Up

Down

Front

Back

Forward

Rear

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

BE–167

2468

INSPECTION

1.

INSPECT DRIVER’S POWER SEAT SWITCH CONTI-
NUITY

Slide switch:

Switch position

Tester connection

Specified condition

FRONT

1 – 9

4 – 6

Continuity

OFF

4 – 6

4 – 9

Continuity

BACK

1 – 6

4 – 9

Continuity

Front vertical switch:

Switch position

Tester connection

Specified condition

UP

1 – 10

4 – 5

Continuity

OFF

4 – 5

4 – 10

Continuity

DOWN

1 – 5

4 – 10

Continuity

Lifter switch:

Switch position

Tester connection

Specified condition

UP

1 – 7

4 – 8

Continuity

OFF

4 – 7

4 – 8

Continuity

DOWN

1 – 8

4 – 7

Continuity

Reclining switch:

Switch position

Tester connection

Specified condition

FORWARD

1 – 3

2 – 4

Continuity

OFF

2 – 4

3 – 4

Continuity

REAR

1 – 2

3 – 4

Continuity

If continuity is not as specified, replace the switch.

I05472

Wire Harness Side

I04160

Lifter

Up

Down

Reclining

Front Vertical

Up

Down

Front

Back

Forward

Rear

BE–168

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

2469

2.

INSPECT DRIVER’S POWER SEAT SWITCH CIRCUIT

(a)

Disconnect the switch connector and connect the seat
wire harness to the floor wire harness.

(b)

Inspect the connector on the wire harness side.

Tester connection

Condition

Specified condition

4 – Ground

Constant

Continuity

1 – Ground

Constant

Battery positive voltage

If circuit is not as specified, inspect the circuits connected to oth-
er parts.

3.

INSPECT PASSENGER’S POWER SEAT SWITCH
CONTINUITY

Slide switch:

Switch position

Tester connection

Specified condition

FRONT

1 – 9

4 – 6

Continuity

OFF

4 – 6

4 – 9

Continuity

BACK

1 – 6

4 – 9

Continuity

Front vertical switch:

Switch position

Tester connection

Specified condition

UP

1 – 5

4 – 10

Continuity

OFF

4 – 5

4 – 10

Continuity

DOWN

1 – 10

4 – 5

Continuity

Lifter switch:

Switch position

Tester connection

Specified condition

UP

1 – 8

4 – 7

Continuity

OFF

4 – 7

4 – 8

Continuity

DOWN

1 – 7

4 – 8

Continuity

I05472

Wire Harness Side

I04161

RELEASE

FORWARD

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

BE–169

2470

Reclining switch:

Switch position

Tester connection

Specified condition

FORWARD

1 – 3

2 – 4

Continuity

OFF

2 – 4

3 – 4

Continuity

REAR

1 – 2

3 – 4

Continuity

If continuity is not as specified, replace the switch.

4.

INSPECT PASSENGER’S POWER SEAT SWITCH CIR-
CUIT

(a)

Disconnect the switch connector and connect the seat
wire harness to the floor wire harness.

(b)

Inspect the connector on the wire harness side.

Tester connection

Condition

Specified condition

4 – Ground

Constant

Continuity

1 – Ground

Constant

Battery positive voltage

If circuit is not as specified, inspect the circuits connected to oth-
er parts.

5.

INSPECT DRIVER’S LUMBAR SUPPORT SWITCH
CONTINUITY

Switch position

Tester connection

Specified condition

FORWARD

1 – 4

2 – 3

Continuity

OFF

1 – 3

2 – 3

Continuity

RELEASE

1 – 3

2 – 4

Continuity

If continuity is not as specified, replace the switch.