939004790 - O003 FRONT SEAT ADJUSTMENTS (ALL) NOT WORKING

All electric front seat functions (movement/adjustment) fail to work.

1	CHECK ON CONDITION OF CIRCUIT PROTECTIVE FUSE	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the circuit protective fuse see wiring diagram    See E3076 ELECTRICALLY-ADJUSTABLE SEATS	Move on to Step 2	Protective fuse blown	Replace the blown fuse
2	CHECK ON SWITCH STATUS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Select the following control unit at the diagnostic equipment:Driver''s/passenger seat control unit.Check the value of the following parameter:Sliding/seat lifting/backrest switch and check that it indicates released when the switch is released and indicates pressed when the switch is pressed.	Move on to Step 6	There is no change in the status of the switch.	Move on to Step 3
3	CHECK ON WIRING CONNECTIONS AT SLIDING/SEAT LIFTING/BACKREST SWITCH	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the connection for the wiring at the electric seat control switch.Also check for any oxidation/impurities at the connector/switch.	Move on to Step 4	1.Switch wiring connector detached or badly positioned on seat mounting.	1.Fit connector correctly on switch.
			2. Presence of oxidation/impurities at connector/control unit.	2.Eliminate oxidation/impurities at connector/switch.
4	CHECK ON WIRING CONNECTIONS AT CONTROL UNIT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the connection for the wiring at the electric seat control unit.Also check for any oxidation/impurities at the connector/control unit.	Move on to Step 5	1.Switch wiring connector detached or badly positioned on seat control unit.	1.Fit connector correctly on control unit
			2. Presence of oxidation/impurities at connector/control unit	2.Eliminate oxidation/impurities at connector/control unit.
5	CHECK ON OPERATION OF SLIDING/SEAT LIFTING/BACKREST SWITCH	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the sliding/seat lifting/backrest switch is working properly	Move on to Step 11	Switch not working correctly.	Replace the switchOp. 7045J50
6	CHECKS USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the diagnostic equipment connected, check:that the sliding/seat lifting/backrest actuator is working properly through active diagnosis	Move on to Step 11	Incorrect operation of sliding/seat lifting/backrest actuator	Move on to Step 7
7	CHECK ON CONNECTION AT SLIDING/SEAT LIFTING/BACKREST MOTOR	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the connection is correctly attached to the motorAlso check for any oxidation/impurities at the connector/motor.	Move on to Step 8	1.Connectors at motor detached or badly positioned.	1.Fit connector correctly on motor
			2.Presence of oxidation/impurities at connector/motor.	2.Eliminate oxidation/impurities at connector/motor.
8	SEAT WIRING CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the connection between the seat connection and the floor connection	Move on to Step 9	Seat connectors detached from vehicle floor connectors	Restore the correct connections between the seat and the floor connections
9	CHECK ON ELECTRICAL SEAT WIRING	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the electric seat wiring	Move on to Step 10	Presence of cuts/tears to seat wiring.	Replace cut/broken wiring see wiring diagram    See E3076 ELECTRICALLY-ADJUSTABLE SEATS
10	CHECK ON SLIDING/SEAT LIFTING/BACKREST ADJUSTMENT MOTORS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the sliding/seat lifting/backrest movement motors are working properly.	Move on to Step 11	1.Sliding adjustment motor not working properly.	1.Replace sliding adjustment motor    Op. 7045J26 FRONT SEAT SLIDE MOTOR, L/H OR R/H - R+R FOLLOWING ELECTRICAL WIRING CHECK
			2. Seat lifting adjustment motor not working properly.	2. Replace the seat lifting adjustment motor    Op. 7045J30 FRONT SEAT LIFTING MOTOR, LEFT OR RIGHT - R.R. FOLLOWING ELECTRICAL WIRING CHECK
			3. Backrest adjustment motor not working properly.	Replace the backrest adjustment motor    Op. 7045J34 FRONT SEAT BACKREST ANGLE MOTOR, LEFT OR RIGHT - R.R. FOLLOWING ELECTRICAL WIRING CHECK
11	DRIVER''S/PASSENGER SEAT CONTROL UNIT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Replace the driver''s/passenger seat control unit    Op. 7045J36 SEAT MOVEMENT ECU R R FOLLOWING ELECTRICAL CIRCUIT CHECK	End of diagnosis	The fault persists	Contact technical service for further information on the problem