When Monitored

The Cold Start Monitor diagnostic runs when the following enable conditions are met:

• After an engine off time of more than 60 minutes.
• Battery voltage is above 10.7 volts.
• Engine cold start condition, which is determined by the difference between the engine coolant temperature and ambient temperature at engine start up being less that 15°C (59°F).
• Engine start up coolant temperature is above -7°C (19.4°F).
• Engine oil temperature is between -10°C (14°F) and 188°C (370°F).
• No Cam/Crank Misalignment, Camshaft Slow Response, Engine Oil Pressure Sensor or Engine Oil Temperature Sensor DTCs present.
• At idle and vehicle speed is below 2 mph.
  • On a cold start, when the above enable conditions are met, the PCM will command the Bank 1 Exhaust Cam phaser to a predetermined modeled target position and monitor the actual position of the phaser to see if it is within a calibrated threshold of the target.
• The Cold Start Monitor diagnostic will stop running if any of the following conditions occur:
  • Accelerator Pedal is pressed causing the engine to come off idle.
  • The engine stalls.
  • The engine run time or diagnostic testing time exceeds a calibrated threshold.