FIAT / DUCATO 244eLearn workshop manual · English · Offline edition
Fault diagnosis

I06 MAIN BEAM HEADLAMPS NOT WORKING

Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V
Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V
hen the stalk switch wheel is operated with the key ON, the main beams do not work
Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
1INDIVIDUAL LIGHT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check condition of the bulbs and associated bulb holder unitMove on to Step1. Bulbs damaged1. Change the bulbs Op. 5540B24 MAIN HEADLAMP BULB (1), LH OR RH - R R
2. Front light cluster fault2. Repair or replace the front light cluster Op. 5540B10 EXTERIOR LIGHT DIMMER RESISTOR - R+R
2MAIN BEAM ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:
  • Main beam fuse;
  • Connections between battery, engine bay control unit, main beam relay and bulbs;
  • Bulb earth
Move on to Step1. Component defective1. Replace defective component (in the case of a fuse, find out what caused it to blow)
2. Connections interrupted2. Repair the connections See E2012 MAIN BEAM HEADLAMPS
3MAIN BEAM ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:
  • Connections between battery, ignition switch, engine bay control unit, main beam relay, switch control unit and stalk unit
  • Stalk switch unit earth;
Move on to Step1. Component defective1. 1. Replace defective component (in the case of a fuse, find out what caused it to blow)
2. Connections interrupted2. Repair the connections See E2012 MAIN BEAM HEADLAMPS
4STEERING COLUMN SWITCH UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the stalk unit is working properly: particularly the main beam selector See E2012 MAIN BEAM HEADLAMPSMove on to StepStalk unit not working properlyReplace the steering column switch unit Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG
5CHECK MAIN BEAM RELAYALL OKPROBLEMS ENCOUNTEREDACTION
Check the main beam relay is working properly See E2012 MAIN BEAM HEADLAMPSMove on to StepMain beam relay not working properlyChange the main beam relay Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG
6IGNITION SWITCH CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the ignition switch is operating correctly: particularly the main beam supply relay See E2012 MAIN BEAM HEADLAMPSMove on to StepIgnition switch faultRepair or replace the ignition switch Op. 5520A12 IGNITION SWITCH ASSEMBLY - R R FOR VERSIONS WITH AIR BAG
7SWITCH CONTROL UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:
  • Correct power supply to switch control unit
  • Check that when an earth signal is activated from the stalk unit to the switch control unit, an earth signal leaves the switch control unit to control the main beam relay
Move on to Step1. Connections interrupted1. Repair the connections See E2012 MAIN BEAM HEADLAMPS
2. Switch control unit fault2. Change the switch control unit
8ENGINE BAY CONTROL UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:
  • Correct engine bay control unit power supplies;
  • Check that when an earth signal is activated from the switch control unit to the engine bay control unit, a battery voltage output is generated to control the bulbs.
Move on to Step1. Connections interrupted1. Repair the connections See E2012 MAIN BEAM HEADLAMPS
2. Engine bay control unit fault2. Change engine bay control unit Op. 5505A13 SUPPLEMENTARY JUNCTION CONTROL UNIT IN ENGINE BAY - R R
9CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer present