1991 LEXUS SC400 Service Repair Manual

Page 865 of 4087

LEXUS SC400 1991  Service Repair Manual 
WIRING AND CONNECTOR DIAGRAMS
Turn Signal and Hazard Warning Lights
BE±66±
BODY ELECTRICAL SYSTEM Lighting System 
WhereEverybodyKnowsYourName

Page 866 of 4087

LEXUS SC400 1991  Service Repair Manual 
Parts Replacement (Turn Signals)
(Cornering Light)
REPLACEMENT OF CORNARING LIGHT
1.  REMOVE CORNARING LIGHT(a)  Disconnect negative (±) terminal from the battery.
CAUTION: Work must be started afte

Page 867 of 4087

LEXUS SC400 1991  Service Repair Manual 
Parts Inspection (Turn and Hazard)
(Combination Switch Assembly)
(See page BE±39)
HINT:     Inspect turn signal light switch.
(Turn Signal Flasher)
REMOVAL AND INSTALLATION OF TURN
SIGNAL FLASHER
(S

Page 868 of 4087

LEXUS SC400 1991  Service Repair Manual 
INSPECTION OF HAZARD WARNING
SWITCH
INSPECTION HAZARD WARNING SWITCH(Continuity)
Inspect the switch continuity between terminals.
If continuity is not as specified, replace the switch.
(Switch Circui

Page 869 of 4087

LEXUS SC400 1991  Service Repair Manual 
TROUBLESHOOTING 
Turn Signal and Hazard Warning Light
System
You will find the cause of trouble more easily using the table shown below.  In this table, the numbers indicate
the order priority of the

Page 870 of 4087

LEXUS SC400 1991  Service Repair Manual 
(ILLUMINATION LIGHT SYSTEM)
DESCRIPTION ± ILLUMINATION LIGHT
SYSTEM
The component parts of this system and their function are described in the \
following table.
Parts NameFunction
Rheostat LightIn

Page 871 of 4087

LEXUS SC400 1991  Service Repair Manual 
WIRING AND CONNECTOR DIAGRAMS
BE±72±
BODY ELECTRICAL SYSTEM Lighting System 
WhereEverybodyKnowsYourName

Page 872 of 4087

LEXUS SC400 1991  Service Repair Manual 
Parts Inspection ± ILLUMINATION
LIGHT SYSTEM
(Rheostat Light Control Volume)
REMOVAL AND INSTALLATION OF
RHEOSTAT LIGHT CONTROL VOLUME
(See page  BE±103 )
INSPECTION OF RHEOSTAT LIGHT
CONTROL VOLUM