Rear head restraints do not fold away

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: Seats › Rear head restraints do not fold away

‹ Prev Left or right front seat lumbar adjustment not working Next › Steering wheel height adjustment not working

Fault diagnosisRear head restraints do not fold away

REAR HEAD RESTRAINTS DO NOT FOLD AWAY

the rear head restraints can be folded away by a special button located in the centre console.

The folding button is connected to the Luggage Compartment Node which controls the rear seat right/centre/left folding motors.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the following at the Luggage Compartment NodeIn errors ambient the presence of errors In parameters ambient the plausibility of the "rear head restraints folding request" In active diagnosis ambient the operation of the rear head restraint folding.	Move on to Step	1. Presence of errors	1. Continue following the instructions for the diagnostic equipment.
			2. Rear head restraint folding parameter not plausible	Move on to Step
			3. Rear seat head restraints do not lower	Move on to Step
2	COMPONENT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the operation of the rear head restraint folding button.	Move on to Step	Head restraint folding button not working	Replace the head restraint folding button
3	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity/insulation between: head restraint folding button and centre console rear coupling centre console rear coupling and left front earth centre console rear coupling and Luggage Compartment Node (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING	Move on to Step	Electrical equipment faulty	Restore the electrical system (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING
4	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity/insulation between: Luggage Compartment Node and rear seat rear coupling rear coupling/rear seat and right rear earth (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING	Move on to Step	Electrical equipment faulty	Restore the electrical system (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING
5	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the seat and check the continuity/insulation between the rear coupling/rear seat and the cushion/backrest couplings (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING	Move on to Step	Electrical equipment faulty	Restore the electrical system (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING
6	ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the backrest cover, as necessary and check the continuity/insulation between the cushion/backrest couplings and head restraint folding motors (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING	Move on to Step	Electrical equipment faulty	Restore the electrical system (Wiring Diagram ) E3078 REAR HEAD RESTRAINT FOLDING
7	COMPONENT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the operation of the rear head restraint folding motors (locking, electro-magnet coil interruption)	Move on to Step	Head restraint folding motors faulty	Replace the head restraint folding motors
8	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace the Luggage Compartment Node See in Op. 5505A48 CONTROL UNIT (digital network) in luggage compartment - R.R.

‹ Prev Left or right front seat lumbar adjustment not working Next › Steering wheel height adjustment not working

Parts & tools for this job Staging For 2002 Lancia Thesis

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