Test point 51 · EPROMfault This fault is stored in the following case:

911 Carrera (996) Alarm system diagnosis Test point 51 EPROMfault This fault is stored in the following case: Checksum The control module is faulty Fault code 53 Replacecontrolmodule. Test point 52 Tilt sensor not in This fault is stored in the following cases: normal position Additional alarm system (alarm siren with tilt sensor) is not installed Fault code 54 correctly Additionalalarm system (tilt sensor) is faulty Check installationposition and position of the tilt sensor. Test point 53 No current in tank drive This fault is stored in the following cases: motor despite relay actuation Fault code 58 Short circuit to ground or open circuit between plug lion control module pin 5 or 10, and tank cap actuator pin 1 or 2 or faulty shift elements for tank cap. In the menu item Drive links, select "Tank locking" and carry out the drive link test. If the shift elementfor the tank cap does not react: Pull plugs I and II off the alarm system control module Ohmmeter at alarm system control module plug II pin 1 and ground Ohmmeter display: < 5 .0. Pull plug off actuator for tank cap. 90 -D 53