DME 7.8 DME 7.80 · If the difference is less than 4 %, 1 valve may be faulty on both cylin-

DME 7.8 DME 7.80 If the difference is less than 4 %, 1 valve may be faulty on both cylin- der banks. In this case, all flat-base tappets of the inlet valves must be replaced. A B 20 21 22 23 24 25 26 27 28 29 s A - Oxygen sensor, bank 1 B - Oxygen sensor, bank 2 1 - Select system test. 2 - Select ’Request large lift’. If "Valve 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. 4 - Perform acceleration with wide-open throttle in 2nd gear, until "Valve lift diagnosis complete" appears. 0-162 page 2 1555 P1356 p1356 Printed in Germany, 2000