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Lexus
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1997
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LS 400 V8-4.0L (1UZ-FE)
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Heating and Air Conditioning
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DTC 21
DTC 21
CIRCUIT DESCRIPTION
A photo diode in the solar sensor detects solar radiation and sends signals to the air conditioning control assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE