Checking IAC Motor

SYMPTOM
* CHECKING IAC MOTOR

POSSIBLE CAUSES
- IAC # 1 driver circuit shorted to # 2, # 3, or # 4
- IAC # 2 driver circuit shorted to # 3 or # 4
- IAC # 3 driver circuit shorted to # 4
- Idle air control motor defective
- Throttle body restricted