Checking Idle Air Control Motor

Tests 838 - 843:

Tests 844 - 848:

Tests 849 - 854:

Tests 855 - 858:

Tests 859 - 860:

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 conn terminals damaged, pushed out, mswd
- PCM conn terminals damaged, pushed out, mswd
- PCM conn terminals damaged, pushed out, mswd
- PCM connector terminals damaged, push O or mswd
- IAC motor defective
- Throttle body restricted
- IAC valve driver ckt #1 shorted to other circuits
- PCM def (IAC motor circuit)
- PCM defective (IAC motor circuit)
- PCM defective (IAC motor circuit)
- PCM defective (IAC motor circuit)
- IAC valve driver circuit #3 shorted to #4
- IAC valve driver ckt #2 shorted to other ckts