Central locking not working
- Make
- Fiat
- Model
- Croma Factory Service Manual
- Year
- 2005–2010
- Section
- Doors › Central locking not working
CENTRAL LOCKING NOT WORKING
When the central locking is operated via the driver''s door using the mechanical insert and/or from the inside, via the locking/unlocking buttons, the central locking system does not work. The deterrent LED in the driver''s door panel signals that the locking has taken place. The locking will only be carried out if all the doors are properly shut. The inhibition of the locking is signalled by an LED in the door panel flashing quickly for 3 seconds.
| Results of the tests | ||||
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|---|---|---|---|
Connect the diagnostic equipment to the diagnostic socket and check: . no control units inactive . no faulty control units . no control units with faulty CAN line. | Move on to Step 2 | Presence of faults | Proceed as instructed by the diagnostic tester | |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Using the diagnostic equipment, check that the learning of the change of status of the door locking/unlocking switch is correct by turning the key in the lock barrel | Move on to Step 3 | The door lock change of status is not learnt. | Move on to Step 5 | |
| 3 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Connect the diagnostic equipment to the diagnostic socket and carry out the active diagnosis of the locking/unlocking at the driver''s door node. | Move on to Step 4 | The door does not lock/unlock | Move on to Step 5 | |
| 4 | LOCK LINKAGE CHECK | All OK | Problems encountered | Operation |
| Check the operation of the linkage and the condition of the connections | Move on to Step 5 | Linkage faulty | Restore operation | |
| 5 | ELECTRICAL CIRCUIT CHECK | All OK | Problems encountered | Operation |
Check the continuity/insulation of the electrical connection between the door lock and the door node | End of diagnosis | Electrical connection broken or not insulated | Restore the electrical connection | |
| Front central locking defective | Replace central locking Op. 7005N21 FRONT SIDE DOOR LOCK MOTOR/LOCK ASSEMBLEY FOR ONE DOOR, LEFT OR RIGHT - R.R. | |||
| Rear central locking defective | Replace central locking Op. 7010N21 REAR SIDE DOOR LOCK MOTOR/LOCK ASSEMBLY, LEFT OR RIGHT - R.R | |||
| Front lock defective | Replace door lock Op. 7005N21 FRONT SIDE DOOR LOCK MOTOR/LOCK ASSEMBLEY FOR ONE DOOR, LEFT OR RIGHT - R.R. | |||
| Rear lock defective | Replace door lock Op. 7010N21 REAR SIDE DOOR LOCK MOTOR/LOCK ASSEMBLY, LEFT OR RIGHT - R.R | |||
| Front door control unit defective | Replace door control unit | |||
| Rear door control unit defective | Replace door control unit Op. 7005A48 FRONT SIDE DOOR LOWER SEAL SUPPORT - R R | |||
Parts & tools for this job For 2005 Fiat Croma
- TOOLTrim removal tool kitSearch: trim removal tool kit
- PARTTouch-up paintSearch: Fiat touch up paint
- PARTPanel clip assortmentSearch: Fiat panel clips assortment
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.