DME 7.8 DME 7.80 · A - Oxygen sensing, bank 1

DME 7.8 DME 7.80 A - Oxygen sensing, bank 1 B - Oxygen sensing, bank 2 1 - Select system test. 2 - Select "Request small lift". If "Valve lift diagnosis not ready" appears, a fault may have been stored. 1. Erase the fault memory. 3 - Activate the system test with the key F8 immediately before acceleration with wide-open throttle. The message "Drive link active" then appears. Note! If "Request small lift" appears, the valves remain at small lift, i.e. the performance is reduced dramatically. 4 - Perform acceleration with wide-open throttle in 2nd gear, until "Valve lift diagnosis completed" (max. 4,000 rpm) appears. At speeds above 4,000 rpm, misfires may be stored. Delete the fault memory and repeat the test. Note! ♦If a fault is detected, it is only recorded in the fault memory after 6,000 ignitions (at idling speed approx. 3 minutes waiting time). ♦It is important to observe the oxygen sensors during accelera- tion with wide-open throttle or to record their behaviour with the data logger. End 0-46 page 10 2470 P0303 p0303 Printed in Germany – 4, 2002