Dipped headlamps not working
- Make
- Fiat
- Model
- Grande Punto Factory Service Manual
- Year
- 2005–2012
- Section
- Lights › Dipped headlamps not working
DIPPED HEADLAMPS NOT WORKING
Both the dipped headlamps are not working in any conditions (in both manual and AUTO mode);
The dipped headlamps are controlled by the Body Computer Node via a relay located on the Dashboard Junction Unit.
The lights can be switched on/off using the following controls:
1 Specific command (from the Exterior Lights Control).
2.Command from the dusk sensor
3 Follow me home command.
4. Dipped headlamps maintenance command when the main beam headlamps are switched on.
| Test results | ||||
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|---|---|---|---|
Connect the Examiner diagnostic equipment to the diagnostic socket and check the following at the Body Computer Node: - absence of error B1024 | End of diagnosis | Presence of error B1024 | Move on to Step 2 | |
| 2 | MAIN BEAM HEADLAMPS RELAY CHECK | All OK | Problems encountered | Operation |
| Check the condition of the low beam relay (relay T3 on the engine compartment control unit) | Move on to Step 3 | Relay defective | Replace the relay | |
| 3 | CHECK THE OPERATION OF THE ENGINE COMPARTMENT CONTROL UNIT FUSES | All OK | Problems encountered | Operation |
| Check the correct operation of fuses F14 and F15 inside the engine compartment control unit | Move on to Step 4 | Fuses blown | Replace the fuse (and find out what could have caused it to blow). | |
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
| Keep the diagnostic tester connected and check that the low beams are operating correctly in active diagnosis mode | Move on to Step 7 | Low beams not working | Move on to Step 5 | |
| 5 | BODY COMPUTER CONNECTION CHECK | All OK | Problems encountered | Operation |
| Check for deformed terminals or connections not present on the Body Computer | Move on to Step 6 | Missing connections/pins bent | Renew the correct connections | |
| 6 | CHECK ON OPERATION OF BULBS | All OK | Problems encountered | Operation |
| Check the correct operation of the low beam bulbs | Move on to Step 9 | Filament in one of the bulbs broken | Replace bulb Op. 5540B25 LOW BEAM BULB (ONE) FOR ONE HEADLAMP/LIGHT CLUSTER LH OR RH - R.R | |
| 7 | ELECTRICAL SYSTEM CHECK | All OK | Problems encountered | Operation |
Check the continuity of the connections between the steering column switch unit and the Body Computer Node. | Move on to Step 8 | Interruption or no insulation for the connecting cables | Restore the correct electrical connection | |
| 8 | LOW BEAM CONTROL OPERATION CHECK | All OK | Problems encountered | Operation |
| Check the operation of the low beam control on the stalk | Move on to Step 9 | Internal stalk break | Replace the steering column switch unit | |
| 9 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace Body Computer | |
Parts & tools for this job For 2005 Fiat Grande Punto
- PARTReplacement bulbsSearch: Fiat Grande Punto 2005 bulbs
- TOOLDigital multimeterSearch: automotive digital multimeter
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