Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 1055
DME 7.8 DME 7.8 0 · 0-186P1547
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DME 7.8 DME 7.8 0
0-186P1547
171 Charge Pressure Control Valve Output Stage -
Below Limit
Diagnosis conditions
• Ignition on
Possible fault cause
♦Short circuit to ground
Affected terminals
III/4
Diagnosis/Troubleshooting
Work instruction Display OK If not OK
1 Check wiring harness for ♦Connect special tool 9637 to ∞ Ω Repair wiring har-
short to ground. wiring harness (DME control ness.
module plug).
♦Remove connector of charge
pressure control valve.
♦Measure resistance between
special tool 9637 pin III/4 and
ground.
2193 P1547 0-186 page 1
Printed in Germany – 3, 2001 p1547
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