Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 169
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 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 connector on the sole-
noid hydraulic valve
♦Switch on the ignition.
♦Measure voltage between V/8
and ground
1536 P0023 0-8.8 page 3
Printed in Germany – 6, 2002 p0023
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