Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 172
DME 7.8 DME 7.80 · Valve lift control, bank 1, output stage - below limit
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DME 7.8 DME 7.80
Valve lift control, bank 1, output stage - below limit
Diagnosis conditions
• Engine running
Possible fault cause
♦Triggering wire short to ground
♦Solenoid hydraulic valve faulty
Affected terminals
III/1
Diagnosis/troubleshooting
Note!
The wiring for the solenoid hydraulic valve is routed via the connector X 59/2 pin 8
Work instruction Display OK If not OK
1 Check triggering wire for ♦Connect special tool 9637 to ∞ Ω
short to ground wiring harness (DME control
module plug).
♦Remove connector on the sole-
noid hydraulic valve
♦Measure resistance between III/
1 and ground
2 Replace solenoid hydrau-
lic valve
Valve lift control, bank 1, output stage - above limit
Diagnosis conditions
• Engine running
Possible fault cause
♦Triggering wire short to B+
Affected terminals
III/1
0-8.9 page 2 3755 P0026
p0026 Printed in Germany – 8, 2002
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