1. Introduction -After troubleshootingor repairs, erase the · fault memory with the Porsc

911 Carrera (996) PSM diagnosis 1. Introduction -After troubleshootingor repairs, erase the fault memory with the Porsche System The manual contains the diagnosis for the Tester 2 and carry out a test drive. following system: -After the test drive, read out the fault PSM 5.7 (Porsche Stability Management) memory with Porsche SystemTester 2 again. The system is installed in the following vehicle: 911 Carrera (996) / 911 Carrera 4 (996) as from model year 2000 (Y) Ii' Caution! ~~ Dangerofdamage! Apart from general information about the system (testers, componentarrangement, etc.), the > Never disconnect battery with manual also contains a guided diagnosis engine running. procedure. This guided diagnosis should lead > Never start engine without the technician to the fault source. securely connected battery. In order to locate a faulty component, the > Never use boost chargers to start instructionsfor the main diagnosistest must be the engine. followedexactly. > Disconnect the negative terminal 1.1 General instructions / safety instructions of the battery before welding The following points must be observed during work on the vehicle. vehicle diagnosis: > Never pull off or push on the wiring harnessplugs of the -If the control module is damaged, the control modules or other complete hydraulic unit with integrated electronic componentswhen control module must be replaced. When the ignition is switchedon. replacing a PSM control module, observe the coding of the control module and calibration of the steering-anglesensor. 4503 Diagnosis/troubleshooting PSM System PSM05XX 45 -D 187