1991 LEXUS SC400 Service Repair Manual

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Page 2929 of 4087

LEXUS SC400 1991 Service Repair Manual NGOK OKNG INSPECTION PROCEDURE 1Check voltage between terminals +B and GND of ECU connector. C OK PRemove ECU with connectors still connected. Measure voltage between terminals +B and GND of ECU conn

Page 2930 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG 3Check PWR fusible link. C OK PRemove PWR fusible link from J/B No. 1. Check continuity of PWR fusible link. Continuity Check for short in all the harness and components con- nected to the PWR f

Page 2931 of 4087

LEXUS SC400 1991 Service Repair Manual ±MEMO± ± STEERING STEERING COLUMNSR±69 WhereEverybodyKnowsYourName

Page 2932 of 4087

LEXUS SC400 1991 Service Repair Manual SR±52). WIRING DIAGRAM Sensor Power Source Circuit CIRCUIT DESCRIPTION Power to the position sensors, manual switch and auto set switch is output fr\ om the ECU. DIAGNOSTIC CHARTDIAGNOSTIC CHART SR

Page 2933 of 4087

LEXUS SC400 1991 Service Repair Manual OKNG OKNG OKNG INSPECTION PROCEDURE 1Check voltage between terminals VC and E1 of ECU connector. C OK PRemove ECU with connectors still connected. Measure voltage between terminals V C and E1 of ECU

Page 2934 of 4087

LEXUS SC400 1991 Service Repair Manual SR±52). IN±33). WIRING DIAGRAM Tilt Position Sensor Circuit CIRCUIT DESCRIPTION The tilt position is sent to the ECU as a voltage signal from the position \ sensor. A constant 5 V is supplied to te

Page 2935 of 4087

LEXUS SC400 1991 Service Repair Manual NGOK OKNG OKNG INSPECTION PROCEDURE 1Check voltage between terminals TiS and E1 of ECU connector. C OK Hint P1. Remove ECU with connectors still connected. 2. Remove tilt sensor with connector still

Page 2936 of 4087

LEXUS SC400 1991 Service Repair Manual SR±52). IN±33). WIRING DIAGRAM Telescopic Position Sensor Circuit CIRCUIT DESCRIPTION The telescopic position is sent to the ECU as a voltage signal from the pos\ ition sensor. A constant 5 V is su
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