DME 7.8 DME 7.80 · 84 Secondary air injection pump - below limit

DME 7.8 DME 7.80 84 Secondary air injection pump - below limit Diagnosis conditions • Engine running • Battery voltage greater than 7 V Possible fault cause ♦Short circuit to ground Affected terminals Terminal III/11 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check wiring from DME ♦Remove relay for secondary air 0 V Repair wiring har- control module, Pin III/11, injection pump → End ness to relay of secondary air → End ♦Measure voltage between DME injection pump Pin 85 for control module Pin III/11 and B+ short to ground ♦Switch on the ignition 84 Secondary air injection pump - above limit Diagnosis conditions • Engine running • Battery voltage greater than 7 V Possible fault cause ♦Short circuit to B+ Affected terminals Terminal III/11 0-61 page 2 2665 P0418 p0418 Printed in Germany, 2000