Comprehensive Component (Engine Output) Monitor

OBD System Description - Comprehensive Component Monitor (Engine Output)

DTC Description / Detecting Condition / Confirmation Procedure

P0443
Refer to DTC P0443: Evaporative Emission System Purge Control Valve Circuit:H27 Engine.

P0449
Refer to DTC P0449: Evaporative Emission System Vent Valve / Solenoid Circuit:H27 Engine.

P0506, P0507
Refer to DTC P0506 / P0507: Idle Air Control System RPM Lower than Expected / Higher than Expected:H27 Engine.

IAC System Monitor

Monitoring procedure
The Idle Air Control (IAC) solenoid functionally checked by monitoring the closed loop idle speed correction required to maintain the desired idle rpm. If the proper idle rpm cannot be maintained and the system has a high rpm (+200) or low rpm error (-100) greater than the malfunction threshold, an IAC malfunction is indicated. (P0507, P0506)

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

Canister Purge Valve Circuit Monitor

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

Canister Vent Valve Circuit Monitor

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

Leak Detecting Pump Circuit Monitor

Operation:

Enable Conditions:

Common Prohibition Mode:

Typical Malfunction Thresholds:

IAC System Monitor

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

CAN Communication Signal Circuit Rationality Monitor