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Programming and Relearning

Control unit function (coding/programming)

Transmission, diagnosis software number: G 0210
- Cayenne S (A 48.00)
- Cayenne Turbo (A 48.50)

Integrated functions

The Tiptronic control unit is designed for the OBD II/EOBD and includes the functions listed below:
- Computer identification
- Computer configuration (internal function test) with ignition ON
- Checking the fault memory for fault entries, even in diagnostic mode
- Erasing the fault memory
- Reading measured values from switches and sensors

Supported functions:
- Diagnosis software number
- Drive link test with active fault checking

Basic setting:
- Adaptation/Resetting adaptation values
- Read memory
- Write memory
- Update programme
- Flash programme
- Protected against unauthorized access

Commissioning
When the ignition 'terminal 15' switched on, an internal function test (initialization phase/configuration) is performed in the Tiptronic control unit. When the internal function test is completed successfully, all functions integrated into the Tiptronic control unit are enabled.

Operating condition
The Tiptronic control unit is in operating mode once the ignition is switched on and the internal function test is completed successfully. Within the defined limits for power supply '10.5 V to 16.5 V' and temperature, all incoming signals are processed by the integrated software and the appropriate monitoring and control processes are performed.

The solenoid valves in the transmission are guaranteed to function perfectly at a voltage of between '9.0 V and 16.5 V'.

Data transfer
The Tiptronic control unit sends and receives data/information via the following 'CAN data bus':
- CAN drive (C)
- Gateway (in instrument cluster)

Data transfer via the CAN drive is guaranteed at a voltage of between '6.5 V and 16.5 V'.

Wake-up function via CAN data bus 'CAN drive'
- The data bus switches to idle state after ignition is OFF for 8 seconds

Diagnosis
Faults are only entered within the voltage range 6.5 V to 18.0 V.

Fault memory
Faults that occur during operation are stored in a non-volatile memory (e.g. EEPROM). The faults remain in the memory even if terminal 15 and terminal 30 are not live. The fault memory is designed in such a way that the occurring faults, data source, fault type and fault deletion counter can be saved. The Tiptronic control unit sends messages and checks the CAN drive cyclically for messages from other control units. If no messages are received for a certain time period, a fault is stored in the fault memory.

Adaptation

NOTE: Undeleted adaptation values result in rough shift operations in the transmission. The Tiptronic control unit needs a certain amount of time to replace existing values with new values.

Work to be carried out after replacing a control unit:
- Delete the adaptation values using the Porsche System Tester II No. 9588
- Teach the accelerator pedal

To teach the accelerator pedal:
- Ignition ON
- Press the accelerator pedal for at least 3 seconds

The accelerator pedal can also be taught while the vehicle is in motion, provided the accelerator pedal is pressed for at least 3 seconds. No indication is given that the teaching procedure is complete.

Coding

NOTE: If the coding does not agree with the vehicle equipment, faults will be displayed that do not really exist.

Coding/Programming
Under the menu item "Extract coding" you can read out which equipment features are activated and which are not.

After successful replacement of the 'Tiptronic control unit', the coding in the DME control unit must be adapted.

Modifying coding
- Asia
- U.S.A.
- RoW (rest of world)

Limp-home mode
The functions stored for the limp-home mode in the Tiptronic control unit are divided into two categories: Limp-home mode 1 and limp-home mode 2.

The following table shows the shift response of the transmission in limp-home mode:

Limp-home mode 1

Fault not caused by incorrect gear ratio or unusual shifting.

Explanation of table headings and content:
- Shift state before setting fault: States the selected position of the selector lever and the selected gear before the fault occurs and is set.
- Step 1: After a fault occurs and is set, the Tiptronic control unit switches to limp-home mode and initiates the appropriate shift operation.
- Step 2: The vehicle is in motion and the shift operation initiated in 'Step 1' terminates.
- Step 3: Motion is interrupted and the vehicle stops. The Tiptronic control unit initiates the shift operation for 'gear 3' (the run will be continued in 'gear 3').
- Step 4: The shift operation initiated in 'Step 3' terminates and 'gear 3' is engaged.






Explanatory notes on content of table for Limp-home mode 1:

Power switch (in Tiptronic control unit):
With the power switch (in Tiptronic control unit) 'ON', the Tiptronic control unit can control the transmission.

With the power switch (in Tiptronic control unit) 'OFF', the Tiptronic control unit cannot control the transmission.
- D: 'Selector lever position' gears 1, 2, 3, 4, 5, 6
- R: 'Selector lever position' reverse gear
- 'B1' Shift solenoid valve B1 (modulation pressure)

Where the state given in the table is shown with a '*' or '**', then the state is modified as follows:
- *: 'Gear 5' is engaged if a fault is present in the 'shift solenoid valve C1 (modulation pressure)' (disengagement fault of the torque converter lockup clutch).
- **: Shifting is not possible if a fault is present in the 'shift solenoid valve C2 (modulation pressure)' (engagement fault of the torque converter lockup clutch). If the selector lever is moved from 'D' to 'N' and back again to 'D' then the Tiptronic control unit shifts to 'gear 5'. Differences: If the vehicle speed = 0 km/h and the period of 10 seconds set in the selector lever positions 'P, R, N' expires, then 'gear 3' is engaged after changing the selector lever position from 'D' to 'N' and back again to 'D'. If the selector lever is moved from 'D' to 'N' and back again to 'D' in 'step 1' and 'step 2', the Tiptronic control unit shifts to 'gear 5'.

In the event of a 'solenoid valve modulation pressure (main)' fault, the torque is limited as follows:
- Selector lever in position 'D' 150 Nm
- Selector lever in position 'R' 100 Nm

Limp-home mode 2

Fault caused by incorrect gear ratio or unusual shifting.

Explanation of table headings and content:
- Shift state before setting fault: States the selected position of the selector lever and the selected gear before the fault occurs and is set.
- Step 1: Vehicle in motion. After a fault occurs and is set, the Tiptronic control unit switches to limp-home mode. The gear engaged before the fault was set remains and the torque converter lockup clutch is not activated.
- Step 2: Motion interrupted, the vehicles is stationary, the gear engaged in 'step 1' is held. Shift solenoid valve C2 (modulation pressure) and shift solenoid valve B1 (modulation pressure) are 'ON'. All other shift solenoid valves are 'OFF'. Shift operation for 'gear 3' is prepared.
- Step 3: Shift operation for 'gear 3' terminates and the gear is held. Neutral-detect is started.
- Step 4: Shift operation for 'gear 5' is initiated. No 'neutral' state.
- Step 5 Shift operation for 'gear 5' terminates. No 'neutral' state and the shift solenoid valves are disabled.






Power switch (in Tiptronic control unit):
With the power switch (in Tiptronic control unit) 'ON', the Tiptronic control unit can control the transmission.
With the power switch (in Tiptronic control unit) 'OFF', the Tiptronic control unit cannot control the transmission.
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