Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 692
DME 7.8 DME 7.80 · Do not use contact spray on the connectors to oxygen sensor.
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DME 7.8 DME 7.80
Note!
Do not use contact spray on the connectors to oxygen sensor.
Work instruction Display OK If not OK
1 Check oxygen sensor ♦Remove oxygen sensor connec- 3.0 to 3.5 Ω at 20 Replace oxygen
heating tor Bank 1 ahead of catalytic °C sensor
converter
♦Check resistance between pin 3
and 4 towards the oxygen sen-
sor
♦
2 ♦Check resistance between pin 4 ∞ Ω
and the oxygen sensor housing
3 Check wiring ♦Check resistance between pin 4 ∞ Ω Repair wiring har-
and vehicle ground towards ness
DME control module
Note!
Do not exchange oxygen sensors ahead of catalytic converter and
after catalytic converter.
0-105 page 6 2469 P1115
p1115 Printed in Germany – 2, 2000
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