Direction indicators / hazard warning lights / not working

Make: Fiat
Model: Doblò Factory Service Manual
Year: 2000–2010
Section: Lights › Direction indicators / hazard warning lights / not working

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Fault diagnosisDirection indicators / hazard warning lights / not working

DIRECTION INDICATORS / HAZARD WARNING LIGHTS / NOT WORKING

With the ignition ON, when the steering column switch unit lever is raised or lowered, the direction indicators do not work. When the button is pressed, the hazard warning lights do not work

1	CHECK WITH EXAMINER DIAGNOSTIC INSTRUMENT	All OK	Problems met	Operation
		Results of the tests
	Connect the EXAMINER diagnostic equipment to the diagnostic socket. Check that there are no faults in the Body Computer.	Continue to Step 2	Direction indicators error. Incorrect bulb	Check condition of bulbs Continue to Step 2
2	CHECK INDIVIDUAL LIGHTS	All OK	Problems met	Operation
	Check the condition of the individual bulbs and the bulb holder assembly	Continue to Step 3	Front bulb damaged	Replace the bulb Op. 5550C18
			Damaged rear bulb	Replace the bulb Op. 5550C26
			Side repeater damaged	Replace the side repeater Op. 5550C22
			Rear bulb holder assembly faulty	Repair or replace the rear lights cluster Op. 5540A44
			Front bulb holder assembly faulty	Repair or change the front light unit Op. 5540B79
3	STEERING COLUMN SWITCH UNIT CHECK	All OK	Problems met	Operation
	Check that the steering column switch unit is working properly and check that the direction indicators switch is working properly Characteristic of working principle 5550A stalk unit	Continue to Step 4	Steering column switch unit not working properly	Replace the steering column switch unit Op. 5550A12
4	CHECK HAZARD WARNING LIGHTS SWITCH	All OK	Problems met	Operation
	Check the operation of the hazard warning lights switch See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS	Continue to Step 5	Hazard warning lights switch faulty	Replace the control panel Op. 5505A24
5	CHECK DIRECTION INDICATORS/HAZARD LIGHTS ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check, in order: connections between stalk unit and Body Computer connections between Body Computer and junction unit connections between lights and Body Computer connections between Body Computer and bulbs; bulb earth See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS	Continue to Step 6	Component defective	Replace the component involved (if a fuse is involved, search for the cause of the problem)
		Continue to Step 6	Connections broken	Restore the connections See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS
6	CHECK ON BODY COMPUTER SUPPLY	All OK	Problems met	Operation
	Check that the Body Computer is supplied correctly	Continue to Step 7	Incorrect supply	Restore the correct supply: See E2020 DIRECTION INDICATORS / HAZARD WARNING LIGHTS
	Check that the Body Computer is supplied correctly	Continue to Step 7	Body Computer faulty	Replace the Body Computer Op. 5505A32
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

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Parts & tools for this job For 2000 Fiat Doblò

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