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A/C Idle Up Circuit


SYSTEM: A/C Idle Up Circuit

CIRCUIT DESCRIPTION
When the air conditioning operates (increased engine load), this circuit switches the vacuum switching valve ON and increases the amount of bypass air to increase the idle speed, thus maintaining driveability.





WIRING DIAGRAM











DIAGNOSTIC PROCEDURE WITH TOYOTA HAND-HELD TESTER











DIAGNOSTIC PROCEDURE WITHOUT TOYOTA HAND-HELD TESTER











INSPECTION PROCEDURE WITH TOYOTA HAND-HELD TESTER











INSPECTION PROCEDURE WITHOUT TOYOTA HAND-HELD TESTER