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Home >> Jeep >> 2000 >> Wrangler L6-4.0L VIN S >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Checking IAC Motor
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Checking IAC Motor

Tests 1 - 3:




Tests 4 - 8:




Tests 9 - 13:




Tests 14 - 16:





SYMPTOM
CHECKING THE [1][2]IDLE AIR CONTROL MOTOR

POSSIBLE CAUSES
- Engine vacuum leaks
- IAC driver # 1 shorted to ground
- IAC driver # 2 shorted to ground
- IAC driver # 3 shorted to ground
- IAC driver # 4 shorted to ground
- IAC driver circuits # 2, 3, 4 shorted together
- IAC driver circuits # 1, 2, 3, 4 shorted together
- IAC driver circuits # 3 and 4 shorted together
- IAC motor connector terminals
- PCM connector terminals
- IAC motor
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