198001821 - K025 ENGINE COOLANT TEMPERATURE GAUGE NOT WORKING

With the ignition on, the engine coolant temperature gauge in the instrument panel is not working

the engine temperature and the engine temperature sensor faulty signal is made available by the "engine management node" via the C-CAN; the "body computer node" makes the message available on the B-CAN via the gateway and then to the instrument panel.

0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the engine control warning light does not come on with the engine started	Move on to Step 3	Warning light on	Move on to Step 1
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic socket.Check for faults in the Engine Control Node	Move on to Step 2	Presence of faults	Continue as described by the diagnostic equipment
2	ENGINE TEMPERATURE SENSOR CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the engine temperature sensor is working properly	Move on to Step 2	Sensor defective	Replace the temperature sensor    Op. 1060G14 ENGINE COOLANT TEMPERATURE SENSOR - R.R.
3	CHECK FOR ENGINE CONTROL FAULTS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	The panel indicates errors not detected by the engine control unit: proceed as instructed    See table K101 MIL WARNING LIGHT STAYS ON (ENGINE STARTS)	End of diagnosis
4	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner connected to the diagnostic socket, check the operation of the pointer on the instrument panel by means of active diagnosis	Move on to Step 5	Pointer does not move	Replace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
5	ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity/insulation of the connection between the engine coolant temperature sensor, the engine management control unit, the Body Computer and the instrument panel    See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Move on to Step 6	Cables broken/not insulated	Restore cable continuity/insulation
6	CORRECT OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis	The fault persists	Replace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.