Engine coolant overheating signalled by the instrument

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Instrument panel › Engine coolant overheating signalled by the instrument

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Fault diagnosisEngine coolant overheating signalled by the instrument

ENGINE COOLANT OVERHEATING SIGNALLED BY THE INSTRUMENT

1.9 Multijet

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly by carrying out the See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK Check the condition of the fuel supply circuit and make sure that it is working properly carrying out the See Test 1040OA FUEL SUPPLY CIRCUIT CHECK Check the operation of the low pressure supply circuit by carrying out the See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK	Move on to Step 1	Oil level incorrect	Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9) Check the value of the following parameters: . Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK . Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK . Supercharging pressure Target . Supercharging pressure Measured See Test 1060GF SUPERCHARGING PRESSURE CHECK . Engine coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK . Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK . Objective Diesel pressure . Measured Diesel pressure See Test 1060GH DIESEL PRESSURE CHECK . Engine rpm See Test 1060GI CHECK ENGINE SPEED	Move on to Step 2
2	RADIATOR CHECK	All OK	Problems encountered	Operation
	Check radiator conditions. More specifically: No deformations or faults should be present; No dirt should be present	Move on to Step 3	Radiator distorted	Replace the radiator Op. 1088B20 ENGINE COOLING RADIATOR - R + R
		Move on to Step 3	Radiator dirty	Clean the radiator
3	CHECK INSTRUMENT PANEL OPERATION	All OK	Problems encountered	Operation
	Disconnect the coolant temperature sensor and check that the gauge drops to the minimum value	Move on to Step 4	Gauge locked at maximum temperature	Restore the correct connections See See E4010 INSTRUMENT PANEL Replace control panel if necessary Op. 5560B10 CONTROL PANEL - R+R
4	CHECK FAN CYCLE	All OK	Problems encountered	Operation
	Check the fan cycle is correct	Move on to Step 5	Fans not working	Continue following the instructions in the table See table K029 ENGINE COOLANT OVERHEATING SIGNALLED BY INSTRUMENT - WITH VAPOURS VISIBLE
			Fans operate at incorrect temperature: control unit and panel readings consistent	Restore the correct connections with the control unit See See E5020 ENGINE COOLING If necessary, replace it Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R
			Fans operate at incorrect temperature: readings inconsistent	Restore the correct connections See See E4010 INSTRUMENT PANEL Replace control panel if necessary Op. 5560B10 CONTROL PANEL - R+R
5	COOLING SYSTEM LEAKAGE TEST	All OK	Problems encountered	Operation
	Check the seal of the cooling system Op. 0510C30 ENGINE COOLING SYSTEM - LEAKAGE TEST	Move on to Step 6	Coolant leaks found	Proceed as instructed in the table See table X10 ENGINE COOLANT LEAKS
6	CHECK NO GURGLING IS PRESENT	All OK	Problems encountered	Operation
	Check there is not gurgling in the coolant reservoir	Move on to Step 7	Presence of fluid or air bubbles: cylinder head damaged	Replace the gasket Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
7	CYLINDER HEAD HYDRAULIC SEAL CHECK	All OK	Problems encountered	Operation
	Check the hydraulic seal of the cylinder head	Move on to Step 8	Seal not efficient	Remove the cylinder head Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
8	MONOBLOC HYDRAULIC SEAL CHECK	All OK	Problems encountered	Operation
	Check the hydraulic seal of the monobloc	End of diagnosis	Seal not efficient	Replace the monobloc

1.3 Multijet

The customer complains of: Engine overheating

1	RADIATOR CHECK	All OK	Problems encountered	Operation
		Test results
	Check radiator conditions. More specifically: - No deformations or faults should be present; - No dirt should be present	Move on to Step 2	Radiator distorted	Replace the radiator Op. 1088B20 ENGINE COOLING RADIATOR - R + R
			Radiator dirty	Clean the radiator
2	CHECK INSTRUMENT PANEL OPERATION	All OK	Problems encountered	Operation
	Disconnect the coolant temperature sensor and check that the gauge drops to the minimum value	Move on to Step 3	Gauge locked at maximum temperature	Restore the correct connections See E4010 INSTRUMENT PANEL Replace control panel if necessary Op. 5560B10 CONTROL PANEL - R+R
3	COOLING SYSTEM LEAKAGE TEST	All OK	Problems encountered	Operation
	Check the seal of the cooling system Op. 0510C30 ENGINE COOLING SYSTEM - LEAKAGE TEST	Move on to Step 4	Coolant leaks found	Proceed as instructed in the See table X10 ENGINE COOLANT LEAKS
4	CHECK NO GURGLING IS PRESENT	All OK	Problems encountered	Operation
	Check there is no oil gurgling in the coolant reservoir	Move on to Step 5	Presence of fluid or air bubbles:	Replace the cylinder head gasket Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
5	CHECK FAN CYCLE	All OK	Problems encountered	Operation
	Check that the fan cycle is correct by carrying out test 1088EA See Test 1088E COOLANT TEMPERATURE CONTROL DEVICES	Move on to Step 6
6	POWER SUPPLY CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check the condition of the fuel supply circuit and make sure that it is working properly carrying out the See Test 1040OA FUEL SUPPLY CIRCUIT CHECK	Move on to Step 7
7	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD) Check the value of the following parameter: - Coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK	Move on to Step 8
8	CHECK INTAKE CIRCUIT AND OIL LEVEL	All OK	Problems encountered	Operation
	Check that the air intake/vacuum circuit is working properly by carrying out the See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY	End of diagnosis	Oil level incorrect	Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY

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Parts & tools for this job For 2005 Fiat Grande Punto

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