DME 7.8 DME 7.8 0 · 0-199P1671

DME 7.8 DME 7.8 0 0-199P1671 DME relay/control module faulty (computer monitor- ing: reset) – signal implausible Diagnosis conditions • Ignition on Possible fault cause ♦Undervoltage ♦DME relay faulty ♦DME control module faulty This fault may be entered if the control module has been operated with undervoltage. Affected terminals I/1 and I/8 Diagnosis/troubleshooting Note! If no fault is present, erase the fault memory. Work instruction Display OK If not OK 1 Check voltage supply, ter- ♦Measure voltage between pin I/ > 11 V minal 15 1 and ground. 2 Check DME relay ♦Switch on the ignition Battery positive volt- Check triggering of ♦Measure voltage between pin I/ age DME relay Replace DME relay 18 and ground 3 Replace DME control module. Step 4 4 Perform adaptation. ♦Switch on the ignition → End → End ♦Wait one minute ♦Do not press the accelerator ♦Switch off the ignition for at least 10 seconds ♦Read out the fault memory 2470 P1671 0-199 page 1 Printed in Germany – 8, 2002 p1671