Manual Program Switch; Transmission Temperature Sensor - Porsche Boxster Technical Manual

Boxster Tiptronic diagnosis 37
8
Fault, DTC Possible causes, elimination, notes
Test point 24
Manual program switch Fault effect:
Short to ground
DTC 51 No manual program.
Note
The manual program switch can be tested with the Porsche System Tes-
ter 2 (Input signals/Manual program switch).
1. Test switch with the Tester.
8
2. Check whether ground is connected to control module connector pin
13.
Nominal value:
In the automatic gate = 00 Q
In the manual gate = 0 ...5 Q
If display is OK = Control module faulty.
3. Check wire from control module connector pin 13 to the manual
switch for short to ground.
Test point 25
Transmission temperature Fault effect:
sensor
R d
d
d ..
8
..e uce riving program.
Open circuIt/short to plus Substitute value of 80 °C for ATF temperature.
DTC 37 No activation of the coolant switchover valve (transmission always
cooled).
Notes
-The ATF temperature can be tested with the Porsche System Tes-
ter 2 (Actual values/fransmission temp.).
-A fault is stored if an ATF temperature outside the limit range below
-50 °C or above + 180 °C is detected.
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37 01 Diagnosis/troubleshooting, Tiptronic 37 -D 39
Printed in Germany -3, 1996 98637021
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