Alarm System Diagnosis

Fault memory

Overview of possible faults
- Door(s) secured and terminal 15 on
- Door lock barrel closed, activated longer than 60 s
- Door lock barrel open, activated longer than 60 s
- Door lock barrel closed
Short to ground
- Door lock barrel open
Short to ground
- Door lock barrel open/closed
Short to ground
- Button, central locking system closed
Short to B+
- Button, central locking system open short to B+
- Button, central locking open/closed short to B+
- Power failure, terminal 30 with active alarm system
- Power failure during alarm output
- Wrong door lock module
- Door on left secured but not locked
- Door on right secured but not locked
- Control module faulty
Short to B+
- Signal from airbag
Short to ground
- Power window control
Short to ground
- Status lead, signal converter
Short to B+
- Status lead, signal converter
Short to ground
- W-lead (DME - immobilizer) interruption
- Passenger compartment monitoring sensor, short to ground
- W-lead (DME - immobilizer) short to B+
- No terminal 86 S recognized
- Variant fault (new coding required)
- Transponder (re-teaching required)
- Passenger compartment monitoring sensor
Short to B+ or faulty
- Passenger compartment monitoring sensor faulty
- Signal converter faulty
- Signal converter, coil fault
- Transponder pill faulty or not present
- Wrong key or wrong transponder pill
- Switch, door secured on right
- Switch, door secured on left
- Servo motor, central locking system
Short to B+