1991 LEXUS SC400 Service Repair Manual

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Page 857 of 4087

$LEXUS SC400 1991 Service Repair Manual Troubleshooting Taillight System You will find the cause of troubles more easily using the table well shown \ below. In this table, the numbers indi- cate the order priority of the causes in trouble$

Page 858 of 4087

$LEXUS SC400 1991 Service Repair Manual (STOP LIGHT SYSTEM) DESCRIPTION ± Stoplight System The component parts of this system and their function are as shown in the f\ ollowing table. Parts Name\ $

Page 859 of 4087

LEXUS SC400 1991 Service Repair Manual
WIRING AND CONNECTOR DIAGRAMS ±
STOP LIGHT SYSTEM
BE±60±
BODY ELECTRICAL SYSTEM Lighting System
WhereEverybodyKnowsYourName

Page 860 of 4087

LEXUS SC400 1991 Service Repair Manual
Parts Replacement ± Stoplights
(Rear Combination Light)
(See page BE±56 )
(High Mount Stop Light)
REPLACEMENT OF HIGH MOUNT STOP
LIGHT
1. REMOVE HIGH MOUNT STOP LIGHT
(a) Disconnect negative (±)

Page 861 of 4087

LEXUS SC400 1991 Service Repair Manual
INSPECTION OF STOP LIGHT SWITCH
INSPECT STOP LIGHT SWITCH(Continuity)
Inspect the switch continuity between terminals.
If continuity is not as specified, replace the switch.
(Switch Circuit)
Disconne

Page 862 of 4087

LEXUS SC400 1991 Service Repair Manual
INSPECTION OF LIGHT FAILURE
SENSOR
INSPECT LIGHT FAILURE SENSOR(Relay Circuit)
Disconnect the connector from the sensor and inspect the
connector on the wire harness side as shown.
Check forTester

Page 863 of 4087

$LEXUS SC400 1991 Service Repair Manual Troubleshooting Stop Light System You will find the cause of trouble more easily using the table shown. In t\ his table, the numbers indicate the order priority of the causes in trouble. Check each$

Page 864 of 4087

$LEXUS SC400 1991 Service Repair Manual (TURN SIGNAL AND HAZARD WARNING LIGHT SYSTEM) Description ± TURN SIGNAL AND HAZARD WARNING LIGHT SYSTEM The component parts of this system and their function are as shown in the f\ ollowing table. P$

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