Comprehensive Component (Engine Output) Monitor

OBD System Description - Comprehensive Component Monitor (Engine Output)

DTC Description / Detecting Condition / Confirmation Procedure

P0444, P0445
Refer to DTC P0444 / P0445: EVAP Emission System Purge Control Valve Circuit Open / Shorted.

P0449
Refer to DTC P0449: Evaporative Emission System Vent Valve Circuit.

P0480, P0481, P0482
Refer to DTC P0480 / P0481 / P0482: Fan 1 / Fan 2 / Fan 3 Control Circuit.

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

P2102
Refer to DTC P2102: Throttle Actuator Control Motor Circuit Low.

P2103
Refer to DTC P2103: Throttle Actuator Control Motor Circuit High.

P2108
Refer to DTC P2108: Throttle Actuator Control Module Performance.

P2400
Refer to DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit Open.

Canister Purge Valve Circuit Monitor

Canister Purge Valve Circuit Monitor:

Enable Conditions:

Typical Malfunction Thresholds:

Canister Vent Valve Circuit Monitor

Canister Vent Valve Circuit Monitor:

Enable Conditions:

Typical Malfunction Thresholds:

IAC System Monitor

Monitoring procedure
The Idle Air Control (IAC) throttle valve opening 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)