1991 LEXUS SC400 Service Repair Manual

Page 545 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Left Side Motor/Circuit Breaker Operation)
Driver s Door
(a)  Disconnect the connector from the master switch.
(b) Connect  the positive (+) lead from the battery to terminal
9 and the negative (±

Page 546 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Right Side Door Motor/Motor Operation)
(a) Connect  the positive (+) lead from the battery to terminal
1 and the negative (±) lead to terminal 2, check that the
motor turns clockwise.
(b)  Re ve rs

Page 547 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Circuit)
(a)  Disconnect the connector from the motor.
(b)  Connect  the connector to the master switch and powerwindow switch.
(c) Inspect the c onnector on the wire harness side as
shown.
Check fo

Page 548 of 4087

LEXUS SC400 1991  Service Repair Manual 
INSPECTION OF THEFT DETERRENT
AND DOOR LOCK CONTROL ECU
INSPECT THEFT DETERRENT AND DOOR LOCK CONTROL
ECU(Circuit)
(a)  Inspect ECU Power Source Circuit.(See page  BE±376)
(b)  Inspect Actuator Powe

Page 549 of 4087

LEXUS SC400 1991  Service Repair Manual 
Troubleshooting
You will find the cause of trouble more easily by properly using the table \
shown below. In this table, the
numbers indicate the order of priority of the causes of trouble. Check eac

Page 550 of 4087

LEXUS SC400 1991  Service Repair Manual 
LIQUID CRYSTAL INNER MIRROR
SYSTEM
Description
The liquid crystal inner mirror replaces the previous mirror, which mechanically switched between the ªDayº and
ªNightº settings, with liquid crysta

Page 551 of 4087

LEXUS SC400 1991  Service Repair Manual 
Wiring and Connector Diagrams
Parts Inspection
(Liquid Crystal Inner Mirror)
REMOVAL AND INSTALLATION OF
LIQUID CRYSTAL INNER MIRROR
(See page BO±44)
INSPECTION OF LIQUID CRYSTAL
INNER MIRROR
INSPEC

Page 552 of 4087

LEXUS SC400 1991  Service Repair Manual 
(b)  Press the mirror switch and check if the mirrors surfacerepeatedly  becomes ºbrightº and ºdarkº.
If operation is not as specified, replace the liquid crystal inner
mirror.
(Circuit)
Disconne