Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 482
DME 7.8 DME 7.80 · Work instruction Display OK
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DME 7.8 DME 7.80
Work instruction Display OK If not OK
4 Check wiring from DME ♦Remove connector of knock Repair wiring har-
control module, Pins III/ sensor 1 ness
49 and III/50 to knock → End ♦Connect special tool 9637 to
sensor 1 for continuity wiring harness (DME control
module plug)
♦Measure resistance between 0 - 5 Ω
special tool 9637 Pin III/49 and
knock sensor plug connection
Pin 1
♦Measure resistance between 0 - 5 Ω
special tool 9637 Pin III/50 and ⇒ Step 5
knock sensor plug connection
Pin 2
5 Check wiring from DME ♦Remove connector of knock 0 V Repair wiring har-
control module, Pin III/49, sensor 1 ⇒ Step 6 ness
to knock sensor 1 for → End ♦Connect special tool 9637 to
short to B+ wiring harness (DME control
module plug)
♦Switch on the ignition
♦Measure voltage between spe-
cial tool 9637 Pin III/49 and
ground
6 Replace knock sensor 1 → End
0-51 page 2 2872 P0328
p0328 Printed in Germany, 2000
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