P0717

P0717 (Porsche codes 91 and 92).
Stall speed, transmission input - signal implausible.
Gear monitoring, transmission in put speed - signal implausible.

Function:
The transmission input speed/engine speed ratio or transmission input speed/transmission output speed ratio is monitored.
The "reduced driving programme" is activated in the event of an incorrect signal.

Diagnosis Conditions:



Selector lever position "D", gear 2, 3, 4 or 5
ATF temperature > 60 °C
Engine speed > 3104 rpm

Wiring Diagram:

Transmission Input Speed Sensor:

Transmission Speed Sensor:

Diagnosis Procedure:

Porsche Code 91:

Porsche Code 92:

Porsche Code 92 (cont.):

1 Check sensor for transmission input speed with wiring.
1. Remove Tiptronic control module connector.
2. Connect ohmmeter to Tiptronic control module connector pin 16 and pin 44.

Display: 230... 300 ohm.

2 Check sensor for transmission speed with wiring.
1. Remove Tiptronic control module connector.
2. Connect ohmmeter to Tiptronic control module connector pin 14 and pin 42.

Display: 0.80...1.2 kohm.