Checking the Idle Air Control Motor

Test 1:

Tests 2 - 5:

Tests 6 - 9:

Tests 10 - 13:

Tests 14 - 17:

Tests 18 - 21:

Tests 22 - 23:

SYMPTOM
* CHECKING IDLE AIR CONTROL MOTOR

POSSIBLE CAUSES
- IAC motor # 1 driver circuit open
- IAC motor # 2 driver circuit open
- IAC motor # 3 driver circuit open
- IAC motor # 4 driver circuit open
- PCM connector terminals damaged, pushed out, miswired
- IAC motor
- Throttle body restricted
- IAC motor driver circuit # 3 shorted to # 4
- Powertrain Control Module (IAC motor # 1 circuit)
- Powertrain Control Module (IAC motor # 2 circuit)
- Powertrain Control Module (IAC motor # 3 circuit)
- Powertrain Control Module (IAC motor # 4 circuit)
- IAC motor driver circuit # 1 shorted to other circuits
- IAC motor driver circuit # 2 shorted to other circuits