Contents

		Test results
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Check that the coolant fluid level is correct	Go to Step 1	Coolant level not correct	Top up to the correct level.
1	WATER TEMPERATURE SENSOR CHECKS	All OK	Problems encountered	Operation
	Check that the engine coolant temperature sensor is working properly by carrying out the See Test 1056BC Engine coolant temperature sensor operation check	Go to Step 2	Water temperature sensor incorrectly calibrated.	Replace the water temperature sensor Op. 1056B50 ENGINE COOLANT TEMPERATURE SENSOR - R + R
2	COOLING SYSTEM CHECK	All OK	Problems encountered	Operation
	Check that there are no air bubbles in the cooling system Check that the thermostat is working properly	End of diagnosis	1. Bleed the cooling system 2. Thermostat defective (remains permanently open)	1. Bleed the cooling system 2. Replace the thermostat Op. 1088C40 THERMOSTAT- R + R