Checking Idle Air Control Motor

Tests 749 - 754:

Tests 755 - 759:

Tests 760 - 765:

Tests 766 - 769:

Tests 770 - 771:

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