Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 861
DME 7.8 DME 7.8 0 · ♦Dirt in system
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DME 7.8 DME 7.8 0
♦Dirt in system
♦Solenoid hydraulic valve mechanically blocked
Affected terminals
Diagnosis/Troubleshooting
Work instruction Display OK If not OK
1 Check solenoid hydraulic ♦Remove connector on solenoid See Figure 2 Replace solenoid
valve camshaft adjust- hydraulic valve Step 2 hydraulic valve
ment →End ♦Connect special tool 9675 to
the solenoid hydraulic valve and
to a power supply.
♦Connect oscilloscope or engine
tester to the special tool 9675
♦Set 12 V
♦See Figure 1.
♦Set switch on special tool 9675
to 1
1536 P1325 0-149 page 5
Printed in Germany – 4, 2002 p1325
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