Montero Sport XS 2WD V6-3.5L SOHC (2001)
Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
IDLE AIR CONTROL MOTOR CHECK
Required Special Tool:
MB991709: Test Harness Set
<Checking the Operation Sound>
1. Check that the engine coolant temperature is 20 °C (68 °F) or below.
NOTE: If necessary, you can disconnect the engine coolant temperature sensor connector and connect the harness-side of the connector to
another engine coolant temperature sensor that is at 20 ° (68 °F) or below.
2. Check that the operation sound of the stepper motor can be heard after the ignition is switched ON (but without starting the motor).
3. If the operation sound cannot be heard, check the stepper motor's activation circuit. If the circuit is normal, it is probable that there is a
malfunction of the stepper motor or powertrain control module.
<Checking the Coil Resistance>
1. Disconnect the idle air control motor connector.
2. Measure resistance between terminal 2 and either terminal 1 or terminal 3 of the connector at the idle air control motor side.
Standard value: 28 - 33 Ohms [at 20 °C (68 °F)]
3. Measure the resistance between terminal 5 and either terminal 4 or terminal 6 of the connector at the idle air control motor side.
Standard value: 28 - 33 Ohms [at 20 °C (68 °F)]
4. If resistance is not within the standard value, replace the IAC motor.
<Operation Check>
