Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 1062
DME 7.8 DME 7.80 · Work instruction Display OK
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DME 7.8 DME 7.80
Work instruction Display OK If not OK
3 Check signal wire for ♦Remove connector I of alarm ∞ Ω Repair wiring har-
short circuit to ground system control module ⇒ Step 4 ness
→ End ♦Connect special tool 9637 to
wiring harness (DME control
module plug)
♦Measure resistance between
special tool 9637 Pin I/3 and
ground
4 Check signal wire for ♦Remove connector I of alarm 0 V Repair wiring har-
short circuit to B+ system control module ⇒ Step 4 ness
→ End ♦Connect special tool 9637 to
wiring harness (DME control
module plug)
♦Measure voltage between spe-
cial tool 9637 Pin I/3 and
ground
5 Replace alarm system control module. → End → End
0-189 page 2 9068 P1571
p1571 Printed in Germany, 2000
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