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