Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 195
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
1 Check that oxygen sen- ♦Check if the oxygen sensors ⇒ Step 2 Install the oxygen
sors are allocated cor- were exchanged due to incor- sensors correctly,
rectly rect installation of or tampering eliminate cause of
with the wiring harness damage if neces-
sary
→ End
2 Check oxygen sensor wir- ♦Disconnect oxygen sensor plug < 2 Ω Continue with find-
ing harness ahead of cat- connection ahead of catalytic ⇒ Step 4 ing damage
alytic converter, bank 1 converter, bank 1 ⇒ Step 3
→ End ♦Visual inspection
♦Remove control module connec-
tor B
♦Visual inspection
Check following wiring for continuity
♦Oxygen sensor connector ahead
of catalytic converter pin 1 and
DME control module connector
B pin 15
♦Oxygen sensor connector ahead
of catalytic converter pin 5 and
DME control module connector
B pin 9
♦Oxygen sensor connector ahead
of catalytic converter pin 2 and
DME control module connector
B pin 2
♦Oxygen sensor connector ahead
of catalytic converter pin 6 and
DME control module connector
B pin 5
0-P0040 page 2 2470 P0040
p0040 Printed in Germany – 13, 2003
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