Lexus LS400 (2000 year). Manual - part 27

N13342

1

2

N13343

1

2

N13344

1

2

–

BODY ELECTRICAL

POWER SHOULDER BELT ANCHORAGE SYSTEM

BE–189

2052

5.

Inspection using an ammeter:
INSPECT PASSENGER’S HEIGHT ADJUSTABLE AN-
CHOR MOTOR AND SENSOR 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 battery negative (–) terminal,
then move the slider to end position.

(b)

Continue to apply voltage and check the current changes
to less than 0.1 A within 6 to 46 seconds.

(c)

Disconnect the leads from terminals.

(d)

Approximately 60 seconds later, connect the positive (+)
lead from battery to terminal 2 and the negative (–) lead
to terminal 1, and check that the slider moves to the oppo-
site side.

If operation is not as specified, replace the height adjustable an-
chor motor.

6.

Inspection using an ammeter with a current–measur-
ing probe:
INSPECT PASSENGER’S HEIGHT ADJUSTABLE AN-
CHOR MOTOR AND SENSOR PTC THERMISTOR OP-
ERATION

(a)

Connect the positive (+) lead from the battery to terminal
1 and the negative (–) lead to terminal 2.

(b)

Attach a current–measuring probe to the negative (–)
lead, and move the slider to the end position.

(c)

Check the current changes to less than 0.1 A within 6 to
46 seconds.

N13343

1

2

Z08899

Up

Down

Z08795

Wire Harness Side

h–7–1

BE–190

–

BODY ELECTRICAL

POWER SHOULDER BELT ANCHORAGE SYSTEM

2053

(d)

Disconnect the leads from terminals.

(e)

Approximately 60 seconds later, reverse the polarity and
check that the slider moves to the opposite side.

If operation is not as specified, replace the height adjustable an-
chor motor.

7.

INSPECT DRIVER’S SHOULDER BELT ADJUST
SWITCH CIRCUIT (See page 

DI–755

)

8.

INSPECT DRIVER’S SHOULDER BELT ADJUST
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

UP

2 – 3

Continuity

OFF

–

No continuity

DOWN

1 – 3

Continuity

9.

INSPECT PASSENGER’S SHOULDER BELT ADJUST
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

UP

1 – 7

Continuity

OFF

–

No continuity

DOWN

2 – 6

Continuity

If continuity is not as specified, replace the switch.

10.

INSPECT PASSENGER’S SHOULDER BELT ADJUST
SWITCH CIRCUIT

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

Tester connection

Condition

Specified condition

6 – Ground

Constant

Continuity

7 – Ground

Constant

Continuity

If circuit is not as specified, inspect wire harness.

N13346

1

4

5

7

N13347

3

4

7

8

Z14752

Wire Harness Side

S–8–1

–

BODY ELECTRICAL

POWER SHOULDER BELT ANCHORAGE SYSTEM

BE–191

2054

11.

Upward:
INSPECT SHOULDER BELT ANCHOR RELAY OPERA-
TION

(a)

Connect the positive (+) lead from the battery to terminal
4 and the negative (–) lead to terminal 5 and 7.

(b)

Connect the positive (+) lead from the voltmeter to termi-
nal 1 and negative (–) lead to battery negative (–) termi-
nal, and check that there is battery positive voltage.

12.

Downward:
INSPECT SHOULDER BELT ANCHOR RELAY OPERA-
TION

(a)

Connect the positive (+) lead from the battery to terminal
4 and the negative (–) lead to terminal 7 and 8.

(b)

Connect the positive (+) lead from the voltmeter to termi-
nal 3 and negative (–) lead to battery negative (–) termi-
nal, and check that there is battery positive voltage.

If operation is not as specified, replace rheostat light control.

13.

INSPECT SHOULDER BELT ANCHOR RELAY CIR-
CUIT

Disconnect the connector from the rheostat light control and in-
spect the connector on the wire harness side, as shown.

Tester connection

Condition

Specified condition

5 – Ground

Seat belt adjust switch position UP

Continuity

7 – Ground

Constant

Continuity

8 – Ground

Seat belt adjust switch position DOWN

Continuity

4 – Ground

Constant

Battery positive voltage

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

Z14981

Wire Harness Side

Connector ”A”

Connector ”B”

e–12–1
h–22–1

BE–192

–

BODY ELECTRICAL

POWER SHOULDER BELT ANCHORAGE SYSTEM

2055

14.

INSPECT TILT AND TELESCOPIC ECU CIRCUIT

Disconnect the ECU connector, and inspect the connector on
wire harness side, as shown.

Tester connection

Condition

Specified condition

A7 – Ground

B9 – Ground

Constant

Continuity

A4 – Ground

B22 – Ground

Constant

Battery positive voltage

B15 – Ground

Ignition switch turned to ON

Battery positive voltage

A6 – B8

Move the driver’s height adjustable

anchor sensor

Resistance changes from Approx. 0 to 5 k

Ω

B8 – B17

Constant

Approx. 4 – 6 k

Ω

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