Cold Start Performance Monitor

OBD System Description - Cold Start Performance Monitor

System Description / Monitoring Procedure

The ECM retards the ignition timing and increases the idle air to quickly increase the catalyst temperature at cold start to reduce emissions. The ECM monitors the ignition timing and the idle air for cold start. If the idle air or the ignition timing is out of specification, the ECM will set DTC.

DTC Description / Detecting Condition / Confirmation Procedure

P050A, P050B

Refer to P050A DTC P050A / P050B.

Cold Start Idle Air Control System Performance Monitor

Operation





Enable conditions





Typical malfunction thresholds