Central locking not working
- Make
- Fiat
- Model
- Grande Punto Factory Service Manual
- Year
- 2005–2012
- Section
- Doors › Central locking not working
CENTRAL LOCKING NOT WORKING
When the central locking is activated using the mechanical key or from the inside, via the safety knob, the central locking system does not work.
The door opening/closing command reaches the body computer node. The latter sends the signal received to the actuators which close/open the side doors and directly controls the closing of the boot lid.
| Results of the tests | ||||
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Connect the Examiner diagnostic equipment and carry out the active diagnosis for the defective door lock | Move on to Step 2 | The door does not close/open | Move on to Step 3 | |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
Keeping the Examiner diagnostic equipment connected, check: - no control units inactive; - no faulty control units; | Move on to Step 6 | Presence of faults | Continue following the instructions for the diagnostic equipment | |
| 3 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Using the Examiner diagnostic equipment, check that the learning of the change of state for the door opening/closing switch is correct | Move on to Step 5 | The signal for the door opening/closing switch status has not been learnt correctly | Move on to Step 4 | |
| 4 | ELECTRICAL CIRCUIT CHECK | All OK | Problems encountered | Operation |
Check the continuity/insulation of the electrical connection between the defective door lock and the Body Computer | Move on to Step 6 | Electrical connection broken or not insulated | Restore the electrical connection see wiring diagram | |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | Problem persists | Replace the defective door lock: - if it is a front door: Op. 7005N21 FRONT SIDE DOOR LOCK MOTOR/LOCK ASSEMBLEY FOR ONE DOOR, LEFT OR RIGHT - R.R. - if it is a rear door: Op. 7010N21 REAR SIDE DOOR LOCK MOTOR/LOCK ASSEMBLY, LEFT OR RIGHT - R.R | |
| 6 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | Problem persists | Replace body computer | |
Parts & tools for this job For 2005 Fiat Grande Punto
- TOOLTrim removal tool kitSearch: trim removal tool kit
- PARTTouch-up paintSearch: Fiat touch up paint
- PARTPanel clip assortmentSearch: Fiat panel clips assortment
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