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.

EGR Signal

The SCAN tool monitors only the ECM drive command to the EGR solenoid. On models with Pulse Width Modulated EGR, reading is duty cycle of ECM signal from 0-100 percent. On models with EGR solenoid, ``on'' or ``off'' status of solenoid is indicated. Normal reading with engine running at idle should be 0 or off.