22 · Diagnostics

Alarm and door lock do not come on

Make: Fiat
Model: Ulysse Factory Service Manual
Year: 2002–2010
Section: Alarm › Alarm and door lock do not come on

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Fault diagnosisAlarm and door lock do not come on

ALARM AND DOOR LOCK DO NOT COME ON

The alarm system comes on automatically the moment the doors are locked using the remote control.

The remote control receiver is incorporated in the Steering Wheel Node and is fitted with an aerial for receiving the signal.

The networks are on stand-by 30 mins after the engine is switched off. This makes it impossible to carry out the fault diagnosis. If a diagnostic session has to be opened, start up the engine to reawaken the networks.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that: the fuses for the NBC power supplies are intact. the doors lock mechanically using the keys that come with the vehicle All the remote controls are working	Move on to Step	1. Fuse(s) blown	1. Replace the fuse(s) blown
			2. The doors do not lock using the key
			3. Only one remote control is working	Move on to Step
			4. All remote controls are not working.	Move on to Step
1	INSTRUMENT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using a multimeter, check the battery charge for the remote control(s) that is(are) not working. Carry out the remote control programming procedure CHECK USING DIAGNOSTIC EQUIPMENT:Connect the Examiner diagnostic equipment to the diagnostic socket and check, in the Body Computer Node ambient, that there are no errors and for the following parameter: the number of keys enabled	Move on to Step	1. Battery charge too low.	1. Replace the battery.
			2. One remote control not working	2. Replace the remote control and carry out the programming of all the keys and the remote controsl again.
			3. The remote controls are not working	Move on to Step
			4. The number of keys (for remote controls) programmed is less than the number of remote controls which come with the vehicle	4. Programme all the keys and the remote controls that come with the vehicle
			5. Errors present.	Move on to Step
2	ERRORS CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using the Examiner in the Body Computer ambient, check that the following errors are not present: Steering column switch unit: HF receiver Steering column switch unit: Anti-theft control Steering column switch unit: Internal control unit error. VAN CAR line error Transmission of code for remote control at HF VAN CAR: steering column switch unit control unit (NVO) - no communication VAN CAR: steering column switch unit control unit (NVO) - data line VAN CAR: steering column switch unit control unit (NVO) - negative data line VAN CAR: stand-by mode. VAN CAR: BSI VAN CAR: power supply BSI control lunit (NBC)	Move on to Step	1. HF receiver error detected	1. Replace steering wheel node (NVO).
			2. Anti-theft control error detected	2. Replace steering wheel node (NVO).
			3. Error detected in the control unit	3. Replace steering wheel node (NVO).
			4. VAN CAR line error detected	4. Check VAN CAR line continuity and connections.
			5. VAN CAR error detected: steering column switch unit control unit (NVO) - no communication	5. Check VAN CAR line continuity and connections.
			6. VAN CAR error detected: steering column switch unit control unit (NVO) - data line	6. Check VAN CAR line continuity and connections.
			7. VAN CAR error detected: steering column switch unit control unit (NVO) - negative data line	7. Check VAN CAR line continuity and connections.
			8. VAN CAR error detected: stand-by mode.	8. Check VAN CAR line continuity and connections.
			9. VAN CAR error detected: BSI	9. Check VAN CAR line continuity and connections.
			10. VAN CAR error detected: power supply	10. Check VAN CAR line continuity and connections.
			11. BSI control lunit (NBC)	11. Replace BSI (NBC).
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	Move on to Step	Fault persists	Replace steering wheel node.
4	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace body computer Op. 5505A32 BODY COMPUTER - R R

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Parts & tools for this job Staging For 2002 Fiat Ulysse

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