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Home >> Lexus >> 2007 >> SC 430 V8-4.3L (3UZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Component Tests and General Diagnostics >> Back-Up Power Source Circuit

Back-Up Power Source Circuit

Back-up Power Source Circuit

DESCRIPTION
This circuit supplies a back-up power source for the A/C amplifier. Power is supplied even if the ignition switch is OFF and is used for diagnostic trouble code memory, etc.

Wiring Diagram:






Step 1:




Step 2:




INSPECTION PROCEDURE
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