Introduction

Introduction

Tiptronic
System G1OO

General Instructions/Safety Instructions
The following points must be observed during vehicle diagnosis:
- The coding must be observed when replacing a Tiptronic control module.
- Erase the fault memory with the Porsche System Tester II No.9588 and perform a test drive after troubleshooting or repairs.
- After the test drive, read out the fault memory again with the Porsche System Tester II No.9588.

CAUTION:
Risk of property damage if batteries and plug connectors of the control modules are handled incorrectly.
- Disconnect the battery terminals only when the engine is not running.
- Start the engine only if the battery terminals are firmly connected.
- Connect or disconnect the plug connections of the control modules or other electronic components only with the ignition switched off.
- Before performing welding work on the vehicle, always disconnect the negative terminal of the battery and all plug connections of the 'vehicle electrical system control module'.

Communication Between Control Module and Porsche System Tester II No.9588

NOTE:
The conditions below must be met before communication can be established between the vehicle electrical system control module and the Porsche System Tester II No.9588:
- Porsche System Tester II No.9588 is connected to the diagnostic connector
- Ignition on
- Wheel speed is less than 10 km/h
- The battery positive voltage must be higher than approx. 6.7 V

General Information About the Fault Memory
- The fault memory of the control module can store up to 5 different faults at once.
- If all 5 fault memory locations are occupied, the oldest fault is overwritten by the new fault.
- The content of the fault memory is retained even if the control module is removed from the vehicle.
- The only way to delete faults from the fault memory is to perform an ignition reset (off - on).

Special Information About the Fault Memory
The faults can be classified into 4 groups:

Group 1:
Faults are automatically reset if they are currently no longer present:
Fault Nos. 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41.

Group 2:
Faults are reset when the ignition is switched off and on again:
Fault Nos. 7, 8, 15, 41, 50, 54.

Group 3:
Faults are reset when the ignition is switched off and on depending on an EEPROM background counter (fault healing counter) (conditional reset after ignition off-on):

Fault Nos. 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 17, 55.

Group 4:
Faults are not reset and can be deleted only using the Porsche System Tester II No. 9588:
Fault Nos. 53, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65.

Environmental data
Apart from the fault memory, environmental data are also stored. These are:
- Time after ignition on (max. 5.1 sec) when fault occurs
- Supply voltage when fault occurs
- Gear information when fault occurs

Diagnosis Conditions
Only if the preconditions listed under "Diagnosis conditions" have been met is it possible to recognize the fault. For this reason, it is necessary to comply with the specified procedure after remedying a fault:
1. Erase the fault memory.
2. Meet the preconditions listed under 'Diagnosis conditions'.
3. Read out the fault memory again.

Possible Fault Causes
This is where the possible fault causes leading to the fault are listed. Please bear in mind that additional faults may be stored in the memory after troubleshooting under certain circumstances (e.g. if connectors are disconnected). After completing the repair, read out the fault memory of all control modules and delete the stored faults.

Diagnosis/Troubleshooting
- The stored faults are shown with the Porsche fault code and in plain-text form.
- It is possible to access the extended fault memory with the fault memory info key F8 on the Porsche System Tester II No.9588. This information should then be saved and printed by pressing the key F4. The following information can be displayed:

OBD code
If present, the OBD diagnostic trouble code "Pxxxx" is displayed only at the and of the extended fault memory.

Fault type
The following fault types are possible:
- (no data available)
- Short circuit to B+
- Short circuit to ground
- Signal implausible
- No signal change
- Open circuit/short circuit to B+
- Open circuit/short circuit to ground
- Open circuit
- Below limit
- Above limit

Fault occurrence
The fault occurred as follows:
- Statically (i.e. once)
- Sporadically (i.e. more than once)

Fault status
The following status types are possible:
- Present (at the time of the last diagnosis routine)
- Not present (at the time of the last diagnosis routine)