Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 643
DME 7.8 DME 7.8 0 · 0-95P0712
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DME 7.8 DME 7.8 0
0-95P0712
Transmission Oil Temperature - Below Limit
Diagnosis conditions
• Idle speed
Possible fault cause
♦Temperature sensor faulty
♦Wiring harness
♦DME control module faulty
Affected terminals
Terminal II/23 and IV/11
Resistance values
60 2.8 -3.5 kΩ
°C
90 1.0 -1.3 kΩ
°C
120 0.4 -0.6 kΩ
°C
Diagnosis/Troubleshooting
Work instruction Display OK If not OK
1 Check temperature sen- ♦Connect special tool 9637 to 2.8 - 3.5 kΩ Replace tempera-
sor wiring harness (DME control (at 60 °C) ture sensor
module plug). Step 2 → End
♦Measure resistance between Pin
II/23 and Pin IV/11
2 Check wiring from DME ♦Connect special tool 9637 to 0 - 5 Ω Note
control module to temper- wiring harness (DME control Step 3. The lines are routed
ature sensor for continu- module plug). via the transmis-
ity ♦Remove plug connection of tem- sion plug connec-
tion perature sensor
Repair wiring har-
♦Measure resistance between ness
special tool 9637 Pin II/23 and → End
temperature sensor plug Pin 2
♦Measure resistance between
special tool 9637 Pin IV/11 and
temperature sensor plug Pin 1
3478 P0712 0-95 page 1
Printed in Germany – 6, 2002 p0712
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