Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 863
DME 7.8 DME 7.8 0 · 0-149.1P1328
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DME 7.8 DME 7.8 0
0-149.1P1328
Inlet camshaft output stage – open circuit
Diagnosis conditions
• Engine running
Possible fault cause
♦Open circuit in triggering wire
♦Open circuit in B+ supply
♦Solenoid hydraulic valve faulty
Affected terminals
V/7
Diagnosis/troubleshooting
Note!
The wiring for the solenoid hydraulic valve is routed via the connector X 59/1 pin 14
Work instruction Display OK If not OK
1 Check triggering wire for ♦Connect special tool 9637 to 0 - 5 Ω
continuity. wiring harness (DME control
module plug)
♦Remove connector on the sole-
noid hydraulic valve
♦Measure resistance between V/
7 and solenoid hydraulic valve
connector pin 2
2 Check B+ supply for sole- ♦Remove connector on the sole- Battery positive volt-
noid hydraulic valve noid hydraulic valve age
♦Switch on the ignition
♦Measure voltage of solenoid
hydraulic valve connector pin 1
and ground
3 Check resistance of sole- ♦Measure resistance of solenoid 8 - 12 Ω at 20° C
noid hydraulic valve hydraulic valve between pins 1
and 2
1536 P1328 0-149.1 page 1
Printed in Germany – 8, 2002 p1328
This is a source reference. Confirm exact model applicability in the original material.