October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

When Monitored

This diagnostic runs continuously when the following conditions are met:

With the ignition on.
Battery voltage greater than 10.0 volts.
Ambient Air Temperature (AAT), Engine Coolant Temperature (ECT), and Intake Air Temperature (IAT) Sensor inputs are compared during a cold start.