Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 722
DME 7.8 DME 7.80 · Figure 1:
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DME 7.8 DME 7.80
Figure 1:
Figure 2:
Work instruction Display OK If not OK
2 Check TP sensor voltage ♦Connect special tool 9637 to Approx. 5 V ⇒ Step 4
supply wiring harness (DME control ⇒ Step 3
module plug)
♦Switch on the ignition
♦Measure voltage between Pin III/
10 and Pin III/25
3 Check voltage values of ♦Connect special tool 9637 Replace throttle part
throttle position sensor 2 ⇒ Step 6 ♦Switch on the ignition
♦Measure voltage between Pin III/ Approx. 4.0 - 4.4 V
8 and Pin III/25
♦Fully depress accelerator pedal
♦Measure voltage between Pin III/ Approx. 0.5 - 0.8 V
8 and Pin III/25
4 Check wiring from throttle ♦Separate disconnection point to Repair wiring har-
part to DME control mod- throttle part. ness
ule for continuity or short → End ♦Connect special tool 9637 to
circuit to B+ and ground wiring harness (DME control
module plug)
0-111 page 2 2442 P1122
p1122 Printed in Germany, 2000
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