Lexus GS300/400 (2000 year). Service manual - part 97

I04105

Dark
(10k 

Ω

)

Bright
(0

Ω

)

4

5

I01322

Battery

Ignition
Switch

Warning Light

2

1

Wire Harness Side

I01323

1

2

OFF

ON

I01328

Battery

Ignition
Switch

Warning Light

2

1

Wire Harness Side

I04107

1

2

4

OFF

ON

BE–102

–

BODY ELECTRICAL

COMBINATION METER

2403

30.

INSPECT LIGHT CONTROL RHEOSTAT OPERATION

Gradually, turn the rheostat knob from the bright side to dark
side and check that the resistance decreases from 10 k

Ω

 to 0

Ω

 between terminal 4 and 5. (Rheostat knob turned to clock-

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

31.

INSPECT WINDOW WASHER  LEVEL WARNING
LIGHT

(a)

Disconnect the connector from the warning switch and
ground terminal on the wire harness side connector.

(b)

Engine running and check that the warning light lights up.

If the warning light does not light up, inspect the bulb or wire har-
ness.

32.

INSPECT WINDOW WASHER  LEVEL WARNING
SWITCH CONTINUITY

(a)

Check that no continuity exists between the terminals with
the switch OFF (float up).

(b)

Check that continuity exists between the terminals with
the switch ON (float down).

If operation is not as specified, replace the switch or inspect
ground point.

33.

INSPECT SEAT BELT WARNING LIGHT

(a)

Disconnect the connector from the retractor switch and
ground terminal on the wire harness side connector.

(b)

Turn the ignition switch ON and check that the warning
light lights up.

If the warning light does not light up, inspect the bulb or wire har-
ness.

34.

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.

I04108

Wire Harness Side

I04109

Press

Sensing part

–

BODY ELECTRICAL

COMBINATION METER

BE–103

2404

35.

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.

36.

Passenger seat only:
INSPECT SEAT BELT WARNING OCCUPANT DETEC-
TION SENSOR CONTINUITY

Check that continuity exists between the terminals 1 and 2
when pressing the sensing part.
If operation is not as specified, replace the sensor.
37.

Passenger seat only:
INSPECT SEAT BELT WARNING OCCUPANT DETEC-
TION SENSOR CIRCUIT (See page 

DI–785

)

BR0J9–01

–

BRAKE

BRAKE SYSTEM

BR–1

2109

BRAKE SYSTEM

GENERAL DESCRIPTION

Care must be taken to replace each part properly as it could affect the performance of the brake
system and result in a driving hazard. Replace the parts with parts of the same part number or
equivalent.

It is very important to keep parts and the area clean when repairing the brake system.

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

F01619

BR0JD–03

F01620

Adjusting Nut

Lock Nut

–

BRAKE

PARKING BRAKE PEDAL

BR–11

2119

PARKING BRAKE PEDAL

ON–VEHICLE INSPECTION

1.

CHECK PARKING BRAKE PEDAL TRAVEL

Depress the parking brake pedal all the way and count the num-
ber of clicks.

Parking brake lever travel at 294 N (30 kgf, 66.1 Ibf):
7 – 9 clicks

2.

IF NECESSARY, ADJUST PARKING BRAKE

HINT:
Before adjusting the parking brake, make sure that the rear
brake shoe clearance has been adjusted. For shoe clearance
adjustment see page 

BR–37

.

(a)

Loosen the lock nut and turn the adjusting nut until the
pedal travel is correct.

(b)

Tighten the lock nut.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)