Definition And Abbreviations

AT automatic transmission
ABS anti-lock brake system
ATF automatic transmission fluid; transmission oil
CAN bus Controller Area Network; serial bus system designed specially for use in motor vehicles
CARB "California Air Resources Board" (Californian regulatory body for exhaust emissions state body for air purity)
DME engine control module
driving cycle a driving cycle can be seen as fault path-specific and comprises starting the engine, driving until the fault-specific test conditions are reached and subsequently switching off the engine
EDS electronic pressure control
EEPROM Electrically Erasable Programmable Read Only Memory
Electrically reduced
driving programme 1st - 3rd gear mechanical limp-home after falling below load limit 4th gear immediate mechanical limp-home 5th gear mechanical limp-home after falling below speed threshold, converter clutch open, maximum power fault display (MIL)
Mechanically reduced
driving programme All solenoid valves and pressure regulators are de-energized, fault display on, 4th gear limp-home is mechanical
FC fault code
FDR driving dynamics control
FTP Federal Test Procedure, defined driving cycle with prescribed transmission shifting procedures, braking and idle phases as well as vehicle standstills.
g gravitational acceleration [m/second square]
HLA rear longitudinal four-wheel drive
KWA coolant shut-off valve
LWS steering-angle sensor
ME 7.2 Motronic with E-gas (electronic accelerator)
MIL malfunction indicator light; (emission control warning light)
MV solenoid valve
OBD II On Board Diagnostic System II; the OBD II requirements of the CARB apply as of model year 1994
P code powertrain fault code to SAE standard J2012 for engine and transmission
PSM Porsche Stability Management
PST 2 Porsche System Tester 2
PWM Pulse Width Modulation
RoW rest of world
SAE Society of Automotive Engineers
Scan Tool CARB tester for communication with the control modules linked with emissions
TC Traction Control
V Volt
Selector lever
positions Position P - parking lock
Position R - reverse gear
Position N - neutral
Position D - normal driving
Position M - manual selection mode
warm up cycle a warm up cycle begins by starting the engine after a standstill phase (cold start). The engine temperature must increase by at least 22°C (40°F) and must have reached a minimum value of 71°C (160°F)