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Home >> Toyota >> 2012 >> Highlander Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 127 (Air Conditioning (Manual) (Diagnostic Codes & Circuit Tests) (Except Hybrid)) >> AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) >> Circuit Tests >> Back-up Power Source Circuit >> Description

Back-up Power Source Circuit: Description

WARNING: This page is about a different variant/trim than selected.

This is the back-up power source circuit for the air conditioning amplifier. Power is supplied even when the ignition switch is turned off and is used for functions such as the diagnostic trouble code memory.

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