22 · Diagnostics

Excessive exhaust fumes

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: Climate control › Excessive exhaust fumes

‹ Prev (electric) air preheating is not activated at low outside temperatures Next › Supplementary heater will not work in "supplementary heater" mode

Fault diagnosisExcessive exhaust fumes

EXCESSIVE EXHAUST FUMES

There are excessive fumes at the additional heater exhaust when it is working.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the air intake duct	Move on to Step	Duct obstructed	Restore operation
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check: no faults in the supplementary heater control unit parameter plausibility	Move on to Step	1. Presence of faults	1. continue following the instructions for the diagnostic equipment
			2. Air intake motor faulty	Move on to Step
			3. Spark plug faulty	Move on to Step
			4. Fuel pump faulty	Move on to Step
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic equipment (Examiner or other instruments) connected to the diagnostic socket, check: the operation of the air intake motor in active diagnosis	Move on to Step	Operation not correct	Move on to Step
3	AIR INTAKE MOTOR ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the electrical circuit from the additional heater control unit to the air intake motor (Wiring Diagram ) E6020 AIR CONDITIONING	Move on to Step	1. Connections not correct	1. Restore the connections (Wiring Diagram ) E6020 AIR CONDITIONING
		Move on to Step	2. Connections correct, air intake motor not activated	Move on to Step
4	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic equipment (Examiner or other instruments) connected to the diagnostic socket, check: operation of the air spark plug in active diagnosis	Move on to Step	Operation not correct	Move on to Step
5	SPARK PLUG ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the electrical circuit from the additional heater control unit to the spark plug (Wiring Diagram ) E6020 AIR CONDITIONING	Move on to Step	1. Connections not correct	1. Restore the connections (Wiring Diagram ) E6020 AIR CONDITIONING
		Move on to Step	2. Connections correct, spark plug not activated	Move on to Step
6	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic equipment (Examiner or other instruments) connected to the diagnostic socket, check: operation of the fuel pump in active diagnosis	Move on to Step	Operation not correct	Move on to Step
7	FUEL PUMP ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the electrical circuit from the additional heater control unit to the fuel pump (Wiring Diagram ) E6020 AIR CONDITIONING	Move on to Step	1. Connections not correct	1. Restore the connections
		Move on to Step	2. Connections correct, electric pump not activated	Move on to Step (Wiring Diagram ) E6020 AIR CONDITIONING
8	ADDITIONAL HEATER ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the additional heater control unit supply and earth is correct (Wiring Diagram ) E6020 AIR CONDITIONING	Move on to Step	Connections not correct	Restore the connections (Wiring Diagram ) E6020 AIR CONDITIONING
9	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace supplementary heater unit See in Op. 5020M10 independent heater unit - r r

‹ Prev (electric) air preheating is not activated at low outside temperatures Next › Supplementary heater will not work in "supplementary heater" mode

Parts & tools for this job For 2002 Lancia Thesis

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