Lexus GS300/400 (2000 year). Manual - part 35

BE–2

–

BODY ELECTRICAL

BODY ELECTRICAL SYSTEM

2303

4.

MICRO COMPUTER PRESET DRIVING POSITION SYSTEM
Power Seat Control System
Power Mirror Control System
Power Tilt and Telescopic Steering System

If the battery negative (–) terminal is disconnected, the preset driving positions stored in memory are erased,
so be sure to note the positions and reset them after the battery terminal is reconnected.

5.

AUDIO SYSTEM

If the negative (–) terminal cable is disconnected from the battery, the preset AM, FM 1 and FM 2 sta-
tions stored in memory are erased, so be sure to note the stations and reset them after the negative
(–) terminal cable is reconnected to the battery.

If the negative (–) terminal cable is disconnected from the battery, the ”ANTI–THEFT SYSTEM” will
operate when the cable is reconnected, but the radio, tape player and CD player will not operate. Be
sure to input the correct ID number so that the radio, tape player and CD player can be operated again.

6.

MOBILE COMMUNICATION SYSTEM

If the vehicle is equipped with a mobile communication system, refer to precautions in the IN section.

BE0GU–05

I01361

Ignition Switch

Buckle Switch

Driver Side Junction Block

 ECU–IG Fuse

Electric Tension Reducer Solenoid

BE–104

–

BODY ELECTRICAL

ELECTRIC TENSION REDUCER SYSTEM

2405

ELECTRIC TENSION REDUCER SYSTEM

LOCATION

BE0GV–04

I04110

(b)

(d)

Slowly
Retracted

Retracted
More Quickly

I04111

Wire Harness Side

–

BODY ELECTRICAL

ELECTRIC TENSION REDUCER SYSTEM

BE–105

2406

INSPECTION

1.

INSPECT TENSION REDUCER SOLENOID OPERA-
TION

(a)

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

(b)

Pull the belt upward and check that the belt is slowly re-
tracted when released.

(c)

Disconnect the lead from the battery.

(d)

Pull the belt upward and check that the belt is retracted
more quickly when released than in (b).

HINT:
Do not tilt the retractor.
If the operation is not as specified, replace the front seat outer
belt assembly.

2.

INSPECT TENSION REDUCER SOLENOID CIRCUIT

Disconnect the tension reducer solenoid connector and inspect
the connector on wire harness side, as shown.

Tester connection

Condition

Specified condition

2 – Ground

Buckle switch position

OFF (belt unfastened)

No continuity

2 – Ground

Buckle switch position

ON (belt fastened)

Continuity

1 – Ground

Ignition switch ACC or LOCK

No voltage

1 – Ground

Ignition switch ON

Battery positive voltage

If the circuit is specified, replace the front seat outer belt assem-
bly.
If the circuit is not as specified, inspect the circuits connected
to other parts.

I04107

1

2

4

OFF

ON

I04108

Wire Harness Side

BE–106

–

BODY ELECTRICAL

ELECTRIC TENSION REDUCER SYSTEM

2407

3.

INSPECT SEAT BELT BUCKLE SWITCH CONTINUITY

(a)

Check that continuity exists between the terminals 1 and
4 on the switch side connector with the switch ON (belt
fastened).

(b)

Check that continuity exists between the terminals 2 and
4 on the switch side connector with the switch OFF (belt
unfastened).

If operation is not as specified, replace the switch.

4.

INSPECT SEAT BELT BUCKLE SWITCH CIRCUIT
Driver side: (See page 

DI–830

)

Passenger side: (See page 

DI–785

)

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

Tester connection

Condition

Specified condition

4 – Ground

Constant

Continuity

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