Lexus ES300 (1997 year). Manual - part 199

N21867

2

1

N21865

(a)

(b)

2

1

1

2

N22086

2

1

N22087

2

1

N21865

(a)

1

(b)

2

2

1

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

BE–131

1515

1997 LEXUS ES300   (RM511U)

(c)

Disconnect the leads from 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
move backwards.

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

6.

INSPECT FRONT VERTICAL 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 counterclockwise.

(b)

Reverse the polarity, check that the motor turns clock-
wise.

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

7.

INSPECT FRONT VERTICAL MOTOR PTC THERM-
ISTOR OPERATION

(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 REAR VERTICAL 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 counterclockwise.

(b)

Reverse the polarity, check that the motor turns clock-
wise.

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

N22088

2

1

N22089

2

1

N21865

(a)

(b)

2

1

1

2

N21868

2

1

N21869

2

1

BE–132

–

BODY ELECTRICAL

POWER SEAT CONTROL SYSTEM

1516

1997 LEXUS ES300   (RM511U)

9.

INSPECT REAR VERTICAL MOTOR PTC THERM-
ISTOR OPERATION

(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.

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 counterclockwise.

(b)

Reverse the polarity, check that the motor turns clock-
wise.

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 starts to fall
backward.

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

N21494

LH Mirror

 Mirror Motor

Mirror Switch

Ignition Switch

Instrument Panel Junction Block

 CIG Fuse

RH Mirror

 Mirror Motor

BE05U–01

–

BODY ELECTRICAL

POWER MIRROR CONTROL SYSTEM

BE–133

1517

1997 LEXUS ES300   (RM511U)

POWER MIRROR CONTROL SYSTEM

LOCATION

BE05V–01

N13473

1

2

3

4

5

6

7

8

9

10

N21376

Wire Harness Side

1 2 3 4 5 6 7 8 9 10

h–10–1–c

BE–134

–

BODY ELECTRICAL

POWER MIRROR CONTROL SYSTEM

1518

1997 LEXUS ES300   (RM511U)

INSPECTION

1.

Master switch left side:
INSPECT MIRROR SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

 –

No continuity

UP

    3 – 4          7 – 8

Continuity

DOWN

    3 – 8          4 – 7

Continuity

LEFT

    4 – 9          7 – 8

Continuity

RIGHT

    4 – 7          8 – 9

Continuity

2.

Master switch right side:
INSPECT MIRROR SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

 –

No continuity

UP

2 – 4

1 – 7 – 8

Continuity

DOWN

4 – 7

1 – 2 – 8

Continuity

LEFT

4 – 10

1 – 7 – 8

Continuity

RIGHT

4 – 7

1 – 8 – 10

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified. inspect the switch circuit.

3.

INSPECT MIRROR SWITCH CIRCUIT

Disconnect the connector from the switch and inspect the con-
nector on the wire harness side.

Tester connection

Condition

Specified condition

8 – Ground

Constant

Continuity

4 – Ground

Ignition switch position LOCK

No voltage

4 – Ground

Ignition switch position ACC or ON

Battery positive voltage

If the circuit is not as specified, inspect the circuits connected
to other parts.