Toyota Corolla (E120): Idle air control System/ Circuit

Inspection procedure

Circuit description

Other materials:

Dtc check/clear
Notice: if there is no dtc in the normal mode, check the pending fault code using the continuous test results function (mode 7 for sae j1979) on the obd ii scan tool or the hand–held tester. Hand–held tester only: when the diagnosis system is switched from the normal mode to the ...

Basic repair hint
(A) hints on operations 1 Looks Always wear a clean uniform. Hat and safety shoes must be worn. 2 Vehicle protection Set a grill cover, fender cover, seat cover and floor mat before starting the operation. 3 Safe ...

Monitor description
While the engine is being cranked, the battery positive voltage is applied to terminal sta of the ecm. If the ecm detects the starter control signal (sta) while the vehicle is driving, it will conclude that there is a fault in the starter control circuit. The ecm will turn on the mil and a d ...