Operation CHARM: Car repair manuals for everyone.

A/C Idle Up Circuit

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





WIRING DIAGRAM











INSPECTION PROCEDURE - TOYOTA hand-held tester











INSPECTION PROCEDURE - OBD II scan tool (excluding TOYOTA hand-held tester)