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911 Carrera (996)

Alarm system diagnosis

Fault, Fault code

Possible causes, elimination, notes

Test point 51

EPROM fault Checksum Fault code 53

This fault is stored in the following case: Replace control module.

Test point 52

Tilt sensor not in normal position Fault code 54

This fault is stored in the following cases:

Additional alarm system (alarm siren with tilt sensor) is not installed correctly

Additional alarm system (tilt sensor) is faulty Check installation position and position of the tilt sensor.

Short circuit to ground or open circuit between plug II on 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 element for 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 Q

Pull plug off actuator for tank cap.

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