Faultfinding table (page 3 of 3)
- Make
- Alfa Romeo
- Model
- 145/146 Electrical System Diagnosis Manual, Volume 3
- Year
- 1994–2001
- Section
- Door Locking System
145 electrical system diagnosisFaultfinding table · page 3 of 3
| CHECKING THE DOOR LOCK CONTROL UNIT (N11) (version for fusebox "A") | TEST A | ||
|---|---|---|---|
| TEST PROCEDURE | RESULT | CORRECTIVE ACTION | |
| A1 | CHECK VOLTAGE – Disconnect device N11 and check on the base of fusebox G1: 12V between the + and - pins of N11 | OK | Carry out step A2 |
| NOT OK | Check fuse F18 of fusebox G1. Check that G1 is connected to earth: from pin 1 of connector G towards earth G148b | ||
| A2 | CHECK LOCK/RELEASE COMMAND – Operate the door locking or release and check that an earth passes from pin 2 to pin 3 of N11 or viceversa | OK | Insert device N11 on the base of G1 and continue with step A3 |
| NOT OK | Restore the wiring between N11 (G1) and the door lock motor (P10 RH or P11 LH) or change the latter | ||
| A3 | CHECK LOCK/RELEASE ACTUATION – Operate the door lock or release device and check for 12V between pin 7 and 8 of connector G of fusebox G1 | OK | DEVICE N11 IS WORKING PROPERLY: Check the door lock motor P10 or P11 and the corresponding connections |
| NOT OK | Change device N11 | ||
| CHECKING THE DOOR LOCK CONTROL UNIT (N11) (version for fusebox "B") | TEST B | ||
|---|---|---|---|
| TEST PROCEDURE | RESULT | CORRECTIVE ACTION | |
| B1 | CHECK VOLTAGE – Disconnect device N11 and check on the base for 12V between the + and - pins of N11 | OK | Carry out step B2 |
| NOT OK | Check fuse F16 of fusebox G1. Check the connection between N11 and fusebox G1 | ||
| B2 | CHECK LOCK/RELEASE COMMAND SIGNAL – Operate the door lock or release and check for the passage of an earth signal from 2 to pin 3 of N11 or viceversa | OK | Insert device N11 on the corresponding base and continue with step B3 |
| NOT OK | Restore the wiring between N11 and the door lock motor (P10 RH or P11 LH) or change the latter | ||
| B3 | CHECK ACTUATION OF LOCK/RELEASE – Operate the door lock or release and check for 12V between pin 1M and 2M of N11 | OK | DEVICE N11 IS WORKING PROPERLY: Check the door lock motor P10 or P11 and the corresponding connections |
| NOT OK | Change device N11 | ||
Parts & tools for this job For 1994 Alfa Romeo 145/146
- TOOLTrim removal tool kitSearch: trim removal tool kit
- PARTTouch-up paintSearch: Alfa Romeo touch up paint
- PARTPanel clip assortmentSearch: Alfa Romeo panel clips assortment
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