22 · Diagnostics

Heater plugs warning light not working

Fault diagnosisHeater plugs warning light not working

HEATER PLUGS WARNING LIGHT NOT WORKING

1.9 JTD 8v, 1.9 JTD 16v, 2.4 JTD 20v

With the ignition ON, the heater plugs warning light does not come on or it remains on and does not go out

0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	First of all check that the engine failure warning light is not on	Move on to Step 1	Engine failure warning light on	Continue as instructed in the See table K101 MIL WARNING LIGHT STAYS ON (ENGINE STARTS)
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner equipment to the diagnostic socket. Check warning light operation in active diagnosis mode	Move on to Step 2	1.Warning light does not come on	1.Replace the instrument panel Op. 5560B10 CONTROL PANEL - R+R
		Move on to Step 2	2.Warning light comes on	2. Move on to Step 3
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check for any errors in the NCM	Move on to Step 3	Errors signalled	Continue following the instructions for the diagnostic equipment
3	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check for any errors in the NBC	Move on to Step 4	Errors signalled	Continue following the instructions for the diagnostic equipment
4	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the connections between the heater plugs control unit, engine management control unit, body computer and instrument panel are correct See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT	Move on to Step	Connections faulty	Restore the correct connections.
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis

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