Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 975
DME 7.8 DME 7.80 · Figure 1:
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DME 7.8 DME 7.80
Figure 1:
Figure 2: 20V DC 1:1
1 - Voltage not applied yet, valve in output state
2 - Exponential voltage increase, magnetic field is built up, 1 2 3 4
increase of the spring preload force
3 - Valve starts to move, spring force increases, valve reaches
end position
4 - Exponential voltage increase, current limitation through self-
induction of the coil
5ms/DIV
0-162.1 page 2 1536 P1357
p1357 Printed in Germany – 6, 2002
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