NOTE: This code sets when the intake throttle valve (ITV) position is not within 30% of the commanded position during freezing conditions.
DESCRIPTION:
Intake throttle position abnormal rate of change.
MONITORED PARAMETER:
Intake Throttle Valve.
TYPICAL ENABLING CONDITIONS:
Engine rpm = idle or higher.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
TYPICAL DURATION:
Five seconds
DASH LAMPS:
None
ENGINE REACTION:
No derate
VERIFICATION:
Engine rpm = idle or higher.
POSSIBLE CAUSES:
1. Faulty ITV motor.
2. Faulty ITV position.
3. Frozen (ice buildup) ITV butterfly.
PROBABLE CAUSES:
1. Air throttle valve harness.
2. ITV harness connector.
3. Intake throttle valve failure.
4. Cold temperatures may falsly cause this code to appear.
5. Intake throttle valve sensor.