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IS 300 Base, Automatic
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Different car
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Section 249 (Air Conditioning System (Diagnosis))
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Circuit Inspection
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Back Up Power Source Circuit
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Wiring Diagram
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Back Up Power Source Circuit: Wiring Diagram
WARNING:
This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - A/C Amplifier Back Up Power Source
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