Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 165
DME 7.8 DME 7.8 0 · 0-8.7P0022
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DME 7.8 DME 7.8 0
0-8.7P0022
Position of Camshaft in Relation to Crankshaft, Bank 2
– Above Limit
Diagnosis conditions
• Idle speed
• Reference mark recognized
• Engine speed between 600 rpm and 1200 rpm.
• Engine temperature greater than 40 °C
• No fault in camshaft position sensors
• No fault with reference mark
• No fault in camshaft adjustment
• No fault in engine temperature
• No fault in camshaft adjustment output stage
Possible fault cause
♦Solenoid hydraulic valve camshaft adjustment faulty
♦Allocation of camshaft to inlet camshaft incorrect
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 P0022 0-8.7 page 1
Printed in Germany – 6, 2002 p0022
This is a source reference. Confirm exact model applicability in the original material.
