22 · Diagnostics

Electric fan stays on all the time

Make: Fiat
Model: Bravo Factory Service Manual
Year: 2007–2014
Section: Engine › Electric fan stays on all the time

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Fault diagnosisElectric fan stays on all the time

ELECTRIC FAN STAYS ON ALL THE TIME

1.4 16v, 1.9 JTD 8v, 1.9 JTD 16v

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Check the following, in order: - Correct engine oil level - Possible oil leaks - Correct coolant level - Possible coolant leaks - radiator blocked	Move on to Step 1	Engine oil level not correct	Adjust oil level
			Oil leaks	Eliminate leaks
			Coolant level not correct	Top up level
			Coolant leaks	Eliminate leaks
			Radiator blocked	Descale radiator
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment to the engine control unit. Check: - that there are no errors in the control unit; - parameter plausibility.	Move on to Step 2	Error detected in the control unit	Continue following the instructions on the diagnostic equipment
		Move on to Step 2	Parameters not plausible	Continue following the instructions on the diagnostic equipment
2	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment to the climate control system control unit. Check: - that there are no errors in the control unit; - parameter plausibility.	Move on to Step 3	Onset of the error detected in the control unit	Continue following the instructions on the diagnostic equipment
		Move on to Step 3	Parameters not plausible	Continue following the instructions on the diagnostic equipment
3	WATER TEMPERATURE SENSOR CHECK	All OK	Problems encountered	Operation
	For 1.4 16v versions Check that the water temperature sensor is working properly by carrying out the See Test 1056BC Engine coolant temperature sensor operation check	Move on to Step 4	Sensor defective	Replace the sensor Op. 1056B50 ENGINE COOLANT TEMPERATURE SENSOR - R + R
		Move on to Step 4	Sensor wiring connection irregular	Restore the correct connection.
	1.9 JTD 8v/16v Check that the water temperature sensor is working properly by carrying out the See Test 1056BC Engine coolant temperature sensor operation check		Sensor defective	Replace the sensor Op. 1060G14 ENGINE COOLANT TEMPERATURE SENSOR - R.R.
			Sensor wiring connection irregular	Restore the correct connection.
4	WIRING CHECK	All OK	Problems encountered	Operation
	Check the continuity of the connections between the engine management control unit and fuse control unit Check that the fan control relays are working properly See E5020 ENGINE COOLING	Move on to Step 5	Wiring defective	Restore the correct wiring.
		Move on to Step 5	Relays defective	Replace the relays
5	THERMOSTAT CHECK	All OK	Problems encountered	Operation
	Check that the thermostat is working properly	Move on to Step 6	Thermostat defective	Replace the thermostat Op. 1088C40 THERMOSTAT- R + R
9	ENGINE CONTROL UNIT CHECK	All OK	Problems encountered	Operation
	For 1.4 16v versions Check that the engine control unit is working properly	End of diagnosis	Engine management control unit defective	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
	For 1.9 JTD 8v/16v versions Check that the engine control unit is working properly	End of diagnosis	Engine management control unit defective	Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R

1.4 16v TJet

1	WATER TEMPERATURE SENSOR CHECK	All OK	Problems encountered	Operation
		Test results
	Check that the water temperature sensor is working properly by carrying out the See Test 1056BC Engine coolant temperature sensor operation check	Move on to Step 4	Sensor defective	Replace the sensor Op. 1056B50 ENGINE COOLANT TEMPERATURE SENSOR - R + R
		Move on to Step 4	Sensor wiring connection irregular	Restore the correct connection.
2	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment to the engine control unit. Check: - that there are no errors in the control unit; - parameter plausibility.	Move on to Step 2	Error detected in the control unit	Continue following the instructions on the diagnostic equipment
		Move on to Step 2	Parameters not plausible	Continue following the instructions on the diagnostic equipment
3	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the Examiner diagnostic equipment to the climate control system control unit. Check: - that there are no errors in the control unit; - parameter plausibility.	Move on to Step 3	Onset of the error detected in the control unit	Continue following the instructions on the diagnostic equipment
		Move on to Step 3	Parameters not plausible	Continue following the instructions on the diagnostic equipment
4	WIRING CHECK	All OK	Problems encountered	Operation
	Check the continuity of the connections between the engine management control unit and fuse control unit Check that the fan control relays are working properly See E5020 ENGINE COOLING	Move on to Step 5	Wiring defective	Restore the correct wiring.
		Move on to Step 5	Relays defective	Replace the relays
5	THERMOSTAT CHECK	All OK	Problems encountered	Operation
	Check that the thermostat is working properly	Move on to Step 6	Thermostat defective	Replace the thermostat Op. 1088C40 THERMOSTAT- R + R
6	ENGINE CONTROL UNIT CHECK	All OK	Problems encountered	Operation
	Check that the engine control unit is working properly	End of diagnosis	Engine management control unit defective	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

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Parts & tools for this job For 2007 Fiat Bravo

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