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Fiat Bravo Factory Service Manual (2007-2014)22 · Fault diagnosis
22 · Diagnostics

Alarm central locking not working

Make
Fiat
Model
Bravo Factory Service Manual
Year
2007–2014
Section
Alarm › Alarm central locking not working
Fault diagnosisAlarm central locking not working

ALARM CENTRAL LOCKING NOT WORKING

When the alarm is switched on using the remote control, the system is activated correctly (acoustic/visual signalling and deterrent LED working), but the central locking system is not working.

The body computer node, after receiving the alarm engagement/disengagement command sends the signal for closing/opening the doors to the door control unit

TEST RESULTS
0PRELIMINARY CHECKSALL OKPROBLEMS ENCOUNTEREDACTION
Using the mechanical key, check that the central locking system is working properly.Move on to Step 1

1. Central locking not working

2. Inertia switch lock operation

1. Continue with the diagnosis of the central locking system

See table P011 CENTRAL LOCKING / NOT WORKING WITH REMOTE CONTROL

2. Unlock the inertia switch by turning the key to ON

1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION

Connect the Examiner diagnostic equipment and check the following at the body computer node:

· no control unit inactive;

· no faulty control units;

· no control unit with faulty B-CAN line

Move on to Step 2Presence of faultsContinue following the instructions for the diagnostic equipment.
2CHECK DOOR MANAGEMENT CONTROL UNITALL OKPROBLEMS ENCOUNTEREDACTION

Check the continuity of the wiring between the body computer and the door management control unit

Check the continuity/insulation of the wiring between the door management control unit and the central locking system

Check correct operation of door management control unit

End of diagnosis

1. Defective wiring between body computer and door management control unit

2. Defective wiring between body computer and door management control unit and central locking system

3. Door management control unit defective

1. Restore the correct wiring.

2. Restore the correct wiring

3. Replace door management control unit

Op. 7005N40 CENTRAL LOCKING ELECTRICAL CONTROL UNIT - R R FOLOWING SYSTEM CHECK

3CHECK ON CORRECT OPERATION OF BODY COMPUTERALL OKPROBLEMS ENCOUNTEREDACTION
Check that the body computer is working properly.End of diagnosisThe fault persists

Replace body computer

Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.

Parts & tools for this job For 2007 Fiat Bravo

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