DME 7.8 DME 7.80 · Diagnosis/troubleshooting

DME 7.8 DME 7.80 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check signal wire from ♦Connect special tool 9637 to ∞ Ω Repair wiring har- DME control module, wiring harness (DME control → End ness Pin III/18, to CMP sensor module plug) → End for short to ground ♦Remove connector of CMP sen- sor 2 ♦Measure resistance between special tool 9637 Pin III/18 and ground 113 Camshaft position sensor 2 - above limit Diagnosis conditions • Engine running Possible fault cause ♦Short circuit to B+ Note! ♦If both CMP sensor signals are missing, the start will take at least 10 seconds. ♦For safety reasons, the ignition timing is retarded. Affected terminals Terminal III/18 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check signal wire from ♦Connect special tool 9637 to 0 V Repair wiring har- DME control module, wiring harness (DME control → End ness Pin III/18, to CMP sensor module plug) → End for short to B+ ♦Remove connector of CMP sen- sor 2 ♦Switch on the ignition ♦Measure voltage between spe- cial tool 9637 Pin III/18 and ground 0-166 page 4 2839 P1397 p1397 Printed in Germany, 2000