2582439 - K25 ENGINE COOLANT TEMPERATURE GAUGE NOT WORKING

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		Results of the tests
1	INSTRUMENT PANEL CONTROL UNIT TEST	All OK	Problems met	Operation
	Use an EXAMINER to carry out active diagnosis of the maximum engine coolant temperature gauge.The coolant gauge pointer should reach full scale deflection	Continue to Step 2	The pointer does not move or moves jerkily	Replace the instrument panel Op.   5560B11
2	CHECKING PARAMETER IS CONSISTENT	All OK	Problems met	Operation
	Connect the EXAMINER to the testing socket.Check the temperature shown on the instrument is consistent with the parameter recorded by the injection control unit	Continue to Step 5	Inconsistent parameters	Continue to Step 3
3	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Instrument panel See   E4010  INSTRUMENT PANEL	Continue to Step 4	Connections not correct	Restore connections
4	CHECKING TEMPERATURE SENSOR ELECTRICAL CIRCUIT	All OK	Problems met	Operation
1.2 8v	Check coolant temperature sensor power supply and earth in order See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT	Continue to Step 5	Sensor defective	Replace water temperature sensor Op.   1056B50
			Connections not correct	Restore connections See   E5030  PETROL ENGINE ELECTRONIC MANAGEMENT
1.9 DIESEL	Check coolant temperature sensor power supply and earth in order See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT	Continue to Step 5	-
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
1.2 8v	Check that the fault is no longer present		Fault persists: engine control unit defective	Replace engine management control unit Op.   1056B82  Search for the fault starting from another symptom'
1.9 DIESEL	Check that the fault is no longer present		Fault persists: engine control unit defective	Replace engine management control unit Op.   1060D80  Search for the fault starting from another symptom'