O08 DRIVER'S SEAT HEAD RESTRAINT IS NOT WORKING - Lancia - THESIS - eLearn

374085 - O08 DRIVER'S SEAT HEAD RESTRAINT IS NOT WORKING

The adjustment is carried out by means of the joystick located at the side of the side and connected to the Driving Position Node.The Driving Position Node is, in turn, connected to the adjustment motor, the potentiometer connected to the motor memorizes the position of the seat. When the speed of the vehicle exceeds 10 Km/h the adjustment of the driver's seat by recalling the position memorized is not possible.

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 connect and check the following at the Driving Position NodeIn errors ambient that there are no faults In parameters ambient the plausibility of the UP/DOWN head restraint parameter In active diagnosis ambient the operation of the head restraint motor.	Move on to Step	1. faults present	1. continue following the instructions for the diagnostic equipment
			2. the head retraint parameter is not plausible.	Move on to Step
			3. The motor is not working	Move on to Step
2	COMPONENT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the control panel and check that it is working properly (Wiring Diagram ) E3077 FRONT HEAD RESTRAINT ADJUSTMENT	Move on to Step	Control panel not working	Replace the control panel
3	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the seat from the vehicle, remove the rear seat cover and check the continuity/insulation between: Driving Position Node and head restraint motor Driving Position Node and backrest coupling connection. connection between backrest coupling and head restraint motor. (Wiring Diagram ) E3077 FRONT HEAD RESTRAINT ADJUSTMENT	Move on to Step	Electrical equipment faulty	Restore the electrical connection. (Wiring Diagram ) E3077 FRONT HEAD RESTRAINT ADJUSTMENT
4	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the seat electricallyConnect the Examiner diagnostic equipment to the diagnostic connect and check the following at the Driving Position Node in active diagnosis.With the help of a voltmeter and with the active diagnosis activated, check for power supply positives at the motor (Wiring Diagram ) E3077 FRONT HEAD RESTRAINT ADJUSTMENT	Move on to Step	1. No power supply positives	1. Replace the Driving Position Node
		Move on to Step	2. The motor is working but the head restraint is not raised or lowered.	Move on to Step
5	COMPONENT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the head restraint mechnical transmission	Move on to Step	Mechanical transmission faulty	Replace the transmission unit.
6	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace the head restraint motor
7	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace the Driving Position Node