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2002
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LS 430 V8-4.3L (3UZ-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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B Code Charts
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B1421
B1421
DTC B1421 SOLAR SENSOR CIRCUIT (PASSENGER SIDE)
CIRCUIT DESCRIPTION
Detection Item:
A photo diode in the solar sensor detects solar radiation and sends signals to the A/C ECU.
Wiring Diagram:
Step 1 - 2:
Step 3 - 4:
INSPECTION PROCEDURE