Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 521
DME 7.8 DME 7.8 0 · Diagnosis/troubleshooting
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DME 7.8 DME 7.8 0
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
short to B+ ground
2665 P0418 0-61 page 3
Printed in Germany, 2000 p0418
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