198001822 - K026 ENGINE COOLANT OVERHEATING WARNING LIGHT NOT WORKING

With the ignition on, the engine coolant temperature warning light 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 2	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	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
3	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the Examiner diagnostic equipment connected to the diagnostic socket, check the operation of the warning light through active diagnosis	Move on to Step 4	The warning light does not come on	Replace the instrument panel    Op. 5560B10 CONTROL PANEL - R+R
4	ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity/insulation of the cable between the engine coolant temperature sensor, engine control unit, Body Computer and instrument panel    See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT	Move on to Step 5	Cables broken/not insulated	Restore cable continuity/insulation
5	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.