Lexus LS400 (2000 year). Service manual — part 7

BE–2

–

BODY ELECTRICAL

BODY ELECTRICAL SYSTEM

1865

5.

MOBILE COMMUNICATION SYSTEM

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

6.

LIGHTING SYSTEM

Halogen bulbs have pressurized gas inside and require special handling.
They can burst or scatter if scratched or dropped. Hold a bulb only by its plastic or metal case.
Don’t touch the glass part of a bulb with bare hands.

When high voltage socket of discharge headlight is touched with the light control switch HEAD, high
voltage of 20,000 V is momentarily generated. This might lead to a serious accident.

Never connect the tester to the high voltage socket of discharge headlight for measurement, as this
leads to a serious because of high voltage.

When performing operation related to the discharge headlight, make sure to do it in the place with no
water of rain to prevent electric shock, with light control switch OFF, battery terminal removed, connec-
tor of light control ECU disconnected.

When performing operation related to the discharge headlight, make sure to do it after assembling has
been completely over and never light up without a bulb installed.

Do not light up the discharge headlight using another power source except vehicle’s.

When there is a defect on the discharge headlight or any shock has been applied to it, replace the light
with a new one.
Even if the light operates normally, there is a possibility that the fail–safe function not works.

BE0C4–01

–

BODY ELECTRICAL

COMBINATION METER

BE–111

1974

REASSEMBLY

Installation is in the reverse order of disassembly. (See page

BE–96

)

BE0C5–01

I03265

Ignition Switch

Instrument Panel
Junction Block

PWR–IG Fuse

Buckle Switch

Tension Reducer Solenoid
(in Retractor Assembly)

BE–112

–

BODY ELECTRICAL

ELECTRIC TENSION REDUCER SYSTEM

1975

ELECTRIC TENSION REDUCER SYSTEM

LOCATION

BE0C6–01

I04610

(b)

(d)

Slowly
Retracted

Retracted
More Quickly

I03441

Wire Harness Side

–

BODY ELECTRICAL

ELECTRIC TENSION REDUCER SYSTEM

BE–113

1976

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

ON (belt fastened)

Continuity

2 – Ground

Buckle switch position

OFF (belt unfastened)

No continuity

1 – Ground

Ignition switch ON

Battery positive voltage

1 – Ground

Ignition switch ACC or LOCK

No 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.