Lexus SC300 / Lexus SC400. Manual - part 167

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BODY ELECTRICAL SYSTEM

Power Seat Control System (Driver’s Seat)

BE–281

Location of Connectors in Seat

BE–282

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BODY ELECTRICAL SYSTEM

Power Seat Control System (Driver’s Seat)

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BODY ELECTRICAL SYSTEM

Power Seat Control System (Driver’s Seat)

BE–283

CIRCUIT INSPECTION

+B Power Source Circuit

CIRCUIT DESCRIPTION

This is the power source for motors such as the slide motor and reclining motor.

DIAGNOSTIC CHART

DIAGNOSTIC CHART

Check Door fuse.

NG

Check for short in all harness and
components connected to the
DOOR fuse (See attached wiring
diagram).

Check voltage between terminals +B, +B2
and GND of ECU connector.

OK

OK

Proceed to next circuit inspection
shown on matrix chart (See page

BE–276

).

Check continuity between terminal GND
of ECU connector and body ground.

NG

NG

Repair or replace harness or
connector.

OK

Check and repair harness or connector
between ECU and battery.

WIRING DIAGRAM

BE–284

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BODY ELECTRICAL SYSTEM

Power Seat Control System (Driver’s Seat)