Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 1099
DME 7.8 DME 7.8 0 · Diagnosis/Troubleshooting
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DME 7.8 DME 7.8 0
Diagnosis/Troubleshooting
Note!
The wiring for the overrun recirculating air valve is routed via the connector X 59/3 pin 8.
Work instruction Display OK If not OK
1 Check triggering wire for ♦Connect special tool 9637 to 0 V. Repair wiring har-
short circuit to B+. wiring harness (DME control ness.
module plug).
♦Remove plug connection of
overrun recirculating air valve.
♦Switch on the ignition.
♦Measure voltage between III/16
and ground.
2138 P1657 0-198 page 3
Printed in Germany – 3, 2001 p1657
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