Manufacturer

Warm up cycle:
The warm-up cycle is the time for the engine to warm up. To fulfill the condition "warm-up cycle", the engine temperature may not be higher than a specified value (for instance 30°C). The engine operating phase has to be long enough to reach a specified temperature (for instance 70°C). The "warm-up cycle condition" is needed to count down or reduce the erase counter in the case of faults which have been recognized as corrected.

Driving cycle:
A "driving cycle" consists of starting the engine, running the engine or driving until oxygen sensing becomes active and stopping the engine. Since stopping the engine cannot be predetermined, the diagnostic routines are started as soon as the oxygen sensing is activated.

Trip:
A "trip" is a driving cycle after a rest period that enabled the diagnostic system to monitor all components and systems at least once. In the event of a fault, it may not be possible to perform all diagnostic routines under certain circumstances. For this reason, a replacement trip is recognized after an operating period of 1150 seconds. In other words, a driving cycle is recognized as a trip after this time, even if all diagnostic routines were not performed.


Readiness code:
The "readiness code" indicates that the required fault checks were performed by the OBD system. It is not important whether a fault was found. The readiness code is cancelled if the fault memory is erased or the power supply (terminal 30) is cut off with a code stored. The readiness code is not reset when the battery is disconnected if no fault is stored. To initiate the readiness code, at least two trips have to be completed.

For the following systems the "readiness code is shown:
- Three Way Catalytic Converter (TWC) converting
- Fuel tank ventilation system
- Secondary air injection system
- Oxygen sensor
- Oxygen sensor heating

Brief Test
The "Brief test" function already used in the 911 Turbo has been extended for the Boxster.

This means that the function to satisfy the diagnosis condition "trip completed" (all diagnosis paths have been checked 1x) can be performed using the Porsche System Tester 2 without the vehicle having to be driven.

Note:
The DME control module is protected against manipulation.

Control module data can be changed externally using the new Porsche System Tester 2 if certain conditions are fulfilled.