Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

IDLE AIR CONTROL MOTOR (STEPPER MOTOR) CHECK

Coil Resistance Check
1. Disconnect the idle air control motor connector.




2. Measure the resistance between terminal 1 and terminal 4 of the connector at the idle air control motor side.

Standard value: 38 - 52 Ohms [at 20 °C (68 °F)]

If resistance is not within the standard value, replace the IAC motor.




3. Measure the resistance between terminal 2 and terminal 3 of the connector at the idle air control motor side.

Standard value: 38 - 52 Ohms [at 20 °C (68 °F)]

If resistance is not within the standard value, replace the IAC motor.