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Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Back-up Power Source Circuit >> Description
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Back-up Power Source Circuit: Description

The back-up power source circuit for the air conditioning amplifier is shown below. Power is supplied even when turning the engine switch off and is used for diagnostic trouble code memory, etc.

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