FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Lexus
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1990
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LS 400 V8-4.0L (1UZ-FE)
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Repair and Diagnosis
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Steering and Suspension
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Steering
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Steering Column
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Testing and Inspection
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Component Tests and General Diagnostics
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Ignition Switch Circuit
Ignition Switch Circuit
IGNITION SWITCH CIRCUIT
CIRCUIT DESCRIPTION
The ON, OFF signal from the IG switch is sent to the ECU.
DIAGNOSTIC CHART
WIRING DIAGRAM
WIRING ROUTING
Step 1:
INSPECTION PROCEDURE