DME 7.8

P0710

37, Transmission temperature sensor
A substitute value of 80° C is assumed for the ATF temperature.

NOTE: If the temperature sensor is faulty, the entire wiring harness of the hydraulic control unit must be replaced.

Diagnosis conditions
- ATF level OK
- Ignition on

Possible fault cause
- ATF level too low
- ATF temperature less then -50° C or > 170° C
- Short circuit to ground/B+/mutual short circuit or open circuit in the circuit to the control module
- ATF temperature sensor is faulty
- Tiptronic control module is faulty

Affected pins
Pin 21 and pin 22

Diagnosis/troubleshooting

NOTE:
- The ATF temperature can be read out under menu item 'Actual values - temperature' with the Porsche System Tester II No. 9588.
- In case of the fault 'Transmission temperature sensor', a substitute value of 80° C is issued.

Part 1:

Part 2: