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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Heating and Air Conditioning
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Testing and Inspection
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Component Tests and General Diagnostics
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Diagnosis Circuit
Diagnosis Circuit
DIAGNOSIS CIRCUIT
CIRCUIT DESCRIPTION
This circuit sends signals to the ECU requesting output of diagnostic codes.
DIAGNOSTIC CHART
WIRING DIAGRAM
WIRING ROUTING
Step 1:
Step 2:
INSPECTION PROCEDURE