Lexus GS300/400 (2000 year). Service manual — part 54

I04166

2

1

BE–174

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

2475

(b)

Continue to apply voltage, check that a circuit breaker op-
eration noise can be heard within 4 to 60 seconds.

(c)

Reverse the polarity, check that the lumbar support be-
gins to move release side with in spproximately 60 se-
conds.

If operation is not as specified, replace the motor.

BE02J–10

I01368

Mirror Assembly

Mirror Motor

Mirror Switch

Left/Right Adjustment Switch

Mirror Control Switch

Ignition Switch

Driver Side Junction Block

Body ECU No.2

–

BODY ELECTRICAL

POWER MIRROR CONTROL SYSTEM

BE–175

2476

POWER MIRROR CONTROL SYSTEM

LOCATION

BE10W–02

I04167

Left/Right Adjustment Switch

Mirror Switch

9

7

6

5

8

I07733

Retract Switch

Mirror Switch

Left/Right
Adjustment Switch

Mirror Switch

Retract Switch

9
8

7
6
5

BE–176

–

BODY ELECTRICAL

POWER MIRROR CONTROL SYSTEM

2477

INSPECTION

1.

USA/CANADA models:
INSPECT MIRROR SWITCH CONTINUITY

Switch position

Tester connection

Resistance (

Ω

)

LEFT

8 – 9

100

RIGHT

8 – 9

0

Illumination

5 – 6

Continuity

Measure resistance between terminals 7 and 9.

Switch position

Resistance (

Ω

)

UP

Approx. 100

RIGHT

250

DOWN

470

LEFT

800

If continuity is not as specified, replace the switch.
2.

USA/CANADA models:
INSPECT MIRROR SWITCH CIRCUIT
(See page

DI–837

)

3.

TAIWAN model:
INSPECT MIRROR SWITCH CONTINUITY

Switch position

Tester connection

Resistance (

Ω

)

LEFT

8 – 9

100

RIGHT

8 – 9

0

Illumination

5 – 6

Continuity

Measure resistance between terminals 7 and 9.

Switch position

Resistance (

Ω

)

UP

Approx. 100

RIGHT

250

DOWN

470

LEFT

800

If continuity is not as specified, replace the switch.
4.

TAIWAN model:
INSPECT RETRACT SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

–

No continuity

ON

1 – 2

Continuity

If continuity is not as specified, replace the switch.
5.

TAIWAN model:
INSPECT MIRROR SWITCH CIRCUIT
(See page

DI–837

)

I04270

5

4

I04271

5

4

I04272

5

6

I04273

5

6

I04168

1

2

–

BODY ELECTRICAL

POWER MIRROR CONTROL SYSTEM

BE–177

2478

6.

w/o Driving position memory:
INSPECT MIRROR MOTOR OPERATION

(a)

Connect the positive (+) lead from the battery to terminal
4 and the negative (–) lead to terminal 5, and check that
the mirror turns to the left side.

(b)

Reverse the polarity, and check that the mirror turns to the
right side.

(c)

Connect the positive (+) lead from the battery to terminal
6 and the negative (–) lead to terminal 5, and check that
the mirror turns upward.

(d)

Reverse the polarity, and check that the mirror turns
downward.

If operation is not as specified, replace the mirror assembly.
7.

w/o Driving position memory:
INSPECT MIRROR MOTOR CIRCUIT
Left side: (See page

DI–882

)

Right side: (See page

DI–916

)

8.

w/ Driving position memory:
INSPECT MIRROR MOTOR OPERATION

(a)

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