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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System >> Air Conditioning System >> Back-up Power Source Circuit >> Description

Back-up Power Source Circuit: Description

The back-up power source circuit for the A/C amplifier is shown below Power is supplied even when the engine switch is turned off The power is used for diagnostic trouble code memory, etc.