DME 7.8 DME 7.8 0 · 0-51P0328

DME 7.8 DME 7.8 0 0-51P0328 210 Knock sensor 1 - above limit Diagnosis conditions • Engine speed more than 3600 rpm • Engine load greater than 45 % Possible fault cause ♦Short circuit to B+ ♦Contact corrosion on the connector ♦Knock sensor loose ♦Short circuit to B+ ♦Knock sensor Note! ♦When a fault is stored, the ignition angle is retarded for all cylin- ders in the range in which knock control is active. ♦Knock control adaptation is inactive. ♦If knock control becomes active here, this may indicate engine damage (increased noise level) Affected terminals Terminal III/49 and III/50 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check plug connection of knock sensor 1 ⇒ Step 2 Connect plug con- nection → End 2 Check plug-in contacts of connector for corrosion ⇒ Step 3 Clean plug-in con- tacts, replace if nec- essary. → End 3 Check mounting of knock sensor. ⇒ Step 4 Mount knock sen- Tightening torque: 20 ± 2 Nm (15 ± 1.5 ftlb.) sor correctly. → End 2872 P0328 0-51 page 1 Printed in Germany, 2000 p0328