K26 Engine coolant temperature gauge not working

Fault diagnosisK26 Engine coolant temperature gauge not working

Step	Test procedure	Result	Action
1	CHECKING WITH DIAGNOSTIC EQUIPMENT Connect the Examiner to the diagnostic socket Verify: there are no faults on the instrument panel; there are no faults on the i.e. control unit	OK	Move onto step 2
1		for faults on the instrument panel for faults on the i.e. control unit	Continue according to the instructions for the diagnostic equipment End of diagnosis
2	CHECKING WITH DIAGNOSTIC EQUIPMENT Connect the Examiner to the diagnostic socket Check warning light operation while in active diagnosis mode	OK	Move onto step 3
2		Warning light not working	Panel defective, replace instrument panel Op. 5560B11 End of diagnosis
3	CHECKING COOLANT TEMPERATURE SENSOR Check that the engine coolant temperature sensor is working:	OK	Move onto step 4
3		Sensor not working	Replace sensor. Op. 1056A50 End of diagnosis
4	CHECK ELECTRICAL CIRCUIT Check continuity/insulation of wiring between engine temperature sensor and i.e. control unit Wiring diagram E5030 PETROL ENGINES ELECTRONIC CONTROL	OK	Move onto step 5
4		Wires broken/not insulated	Restore wiring to correct operation End of diagnosis
5	CHECKING CORRECT OPERATION Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
5		Probable i.e. control unit fault	Replace i.e. control unit Op. 1056B82 Incorrect selection of diagnostic procedure

Parts & tools for this job For 2000 Alfa Romeo 147

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