Automatic Drive Positioner: Overview Infiniti FX50 II

Scheme 1

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL: Description

Each function is reset to the following condition when the battery terminal is disconnected.

FUNCTION AND CONDITION TABLE

Note. Notice that disconnecting the battery when detected DTC are present will erase the DTC memory.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description

Each function is reset to the following condition when the driver seat control unit is replaced.

FUNCTION AND CONDITION TABLE

Note. Notice that disconnecting the battery when detected DTC are present will erase the DTC memory.

SYSTEM INITIALIZATION: Description

Always perform the initialization when the battery terminal is disconnected or the driver seat control unit is replaced.

The entry/exit assist function will not operate normally if no initialization is performed.

MEMORY STORING: Description

Always perform the memory storage when the battery terminal is disconnected or the driver seat control unit is replaced. The memory function and Intelligent Key interlock function will not operate normally if no memory storage is performed.

SYSTEM SETTING: Description

The settings of the automatic driving positioner system can be changed, using CONSULT-III, the display unit in the center of the instrument panel and the set switch. Always check the settings before and after disconnecting the battery terminal or replacing driver seat control unit.

OPERATION PROCEDURE

1. Turn ignition switch ON.
2. Operate power seat switch, tilt & telescopic switch or door mirror remote control switch.
3. The driver seat, steering column or door mirror operates according to the operation of each switch.

SEAT SYNCHRONIZATION FUNCTION: System Description

OUTLINE

The steering column position and door mirror position is adjusted to the position automatically according to the direction and distance of seat movement when performing the manual operation of sliding, reclining or lifting (rear). This function saves adjusting the mirror and steering column when adjusting the seat.

Note. This function is set to OFF before delivery (initial setting). For the system setting procedure. Refer to SYSTEM SETTING: DESCRIPTION .

1. Turn ignition switch ON.
2. Adjust seat position, sliding, reclining, lifting (rear).
3. The steering and outside mirror is adjusted automatically.

Note. The seat synchronization function will not operate if seat adjusting value is more than limit value. ITEM LIMIT VALUE REFERENCE Item Limit value Seat sliding 76 [mm] Seat reclining 9.1 [degrees] Seat lifter (rear) 20 [mm] The seat synchronization function will not operate if the steering column or door mirror moves to the operating end while this function is operating. Perform memory function or drive the vehicle at vehicle speed of 7 km/h or more once to activate this function again. If the seat position is uncomfortable after the adjustment, seat position can be adjusted easily by memory operation.

OPERATION CONDITION

Satisfy all of the following items. The seat synchronization function is not performed if these items are not satisfied.

OPERATION CONDITION TABLE

Satisfy all of the following items. The memory function is not performed if these items are not satisfied.

SYSTEM DESCRIPTION TABLE

However, the memory operation can be performed for 45 seconds after opening the driver door (driver door switch OFF --> ON) even if the IGN position is in OFF position.

1. Open the driver door with ignition switch in OFF position.
2. Driver seat and steering column will move to the exiting position.

Satisfy all of the following items. The exit assist function is not performed if these items are not satisfied.

OPERATION CONDITION TABLE

1. Turn the ignition switch ON. Turn the ignition switch from OFF to ACC after closing the driver door.
2. Driver seat and steering column will return from the exiting position to entry position.

Satisfy all of the following items. The entry assist function is not performed if these items are not satisfied.

OPERATION CONDITION TABLE

1. Unlock doors by using Intelligent Key or driver side door request switch.
2. The system performs memory operation, and then performs exit assist operation.

Note. If the seat position is in memorized position before unlocking doors, memory operation does not perform.

Note. Further information for Intelligent Key interlock function. Refer to MEMORY STORING: DESCRIPTION .

Satisfy all of the following items. The Intelligent Key interlock function is not performed if these items are not satisfied.

OPERATION CONDITION TABLE

Diagnosis Description

The auto drive positioner system can be checked and diagnosed for component operation with CONSULT-III.

Description

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

1. The seat sliding motor is installed to the seat cushion frame.
2. The seat sliding motor is installed with the driver seat control unit.
3. Slides the seat forward/backward by changing the rotation direction of sliding motor.

1. The seat reclining motor is installed to the seatback frame.
2. The seat reclining motor is activated with the driver seat control unit.
3. Tilts the seatback forward/backward by changing the rotation direction of reclining motor.

1. The tilt sensor is installed to the steering column assembly.
2. The resistance of tilt sensor is changed according to the up/down position of steering column.
3. The terminal voltage of automatic drive positioner control unit will be changed according to a change of tilt sensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.

1. The telescopic sensor is installed to the steering column assembly.
2. The resistance of telescopic sensor is changed according to the forward/backward position of steering column.
3. The terminal voltage of automatic drive positioner control unit will be changed according to a change of telescopic sensor resistance. Automatic drive positioner control unit calculates the telescopic position from the voltage.

1. Detention switch is installed on control device. It is turned OFF when the A/T selector lever is in P position.
2. The driver seat control unit judges that the A/T selector lever is in P position if continuity does not exist in this circuit.

Driver seat control unit performs UART communication with the automatic drive positioner control unit using 2 communication lines, TX and RX line. Driver seat control unit receives the operation signals of tilt & telescopic switch, door mirror remote control switch, set switch and memory switch and the position signals of tilt & telescopic sensor and door mirror sensor from the automatic drive positioner control unit and transmits the operation request signal.

Sliding switch is equipped to the power seat switch on the seat cushion side surface. The operation signal is inputted to the driver seat control unit when the sliding switch is operated.

Reclining switch is equipped to the power seat switch on the seat cushion side surface. The operation signal is inputted to the driver seat control unit when the reclining switch is operated.

Lifting switch (front) is equipped to the power seat switch on the seat cushion side surface. The operation signal is inputted to the driver seat control unit when the lifting switch (front) is operated.

Lifting switch (rear) is equipped to the power seat switch on the seat cushion side surface. The operation signal is inputted to the driver seat control unit when the lifting switch (rear) is operated.

Tilt switch is equipped to the steering column. The operation signal is inputted to the automatic drive positioner control unit when the tilt switch is operated.

Telescopic switch is equipped to the steering column. The operation signal is inputted to the automatic drive positioner control unit when the telescopic switch is operated.

Set switch or memory switch is equipped on the seat memory switch installed to the driver side door trim. The operation signal is inputted to the automatic drive positioner control unit when the set switch or memory switch is operated.

CHANGEOVER SWITCH: Description

Changeover switch is integrated into door mirror remote control switch.

Changeover switch has three positions (L, N and R).

It changes door mirror motor operation by transmitting control signal to automatic drive positioner control unit.

MIRROR SWITCH: Description

It operates angle of the door mirror face.

It transmits mirror face adjust operation to AUTOMATIC DRIVE POSITIONER CONTROL UNIT.

Detention switch is installed on control device. It is turned OFF when the selector lever is in P position. The driver seat control unit judges that the selector lever is in P position if continuity does not exist in this circuit.

Detects front door (driver side) open/close condition.

1. The sliding sensor is installed to the seat slide cushion frame.
2. The pulse signal is inputted to the driver seat control unit when sliding is performed.
3. The driver seat control unit counts the pulse and calculates the sliding amount of the seat.

1. The reclining sensor is installed to the seatback frame.
2. The pulse signal is inputted to the driver seat control unit when the reclining is operated.
3. The driver seat control unit counts the pulse and calculates the reclining amount of the seat.

1. The lifting sensor (front) is installed to the seat slide cushion frame.
2. The pulse signal is inputted to the driver seat control unit when the lifting (front) is operated.
3. The driver seat control unit counts the pulse and calculates the lifting (front) amount of the seat.

1. The lifting sensor (rear) is installed to the seat slide cushion frame.
2. The pulse signal is inputted to the driver seat control unit when the lifting (rear) is operated.
3. The driver seat control unit counts the pulse and calculates the lifting (rear) amount of the seat.

1. The tilt sensor is installed to the steering column assembly.
2. The resistance of tilt sensor is changed according to the up/down position of steering column.
3. The terminal voltage of automatic drive positioner control unit will be changed according to a change of tilt sensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.

1. The telescopic sensor is installed to the steering column assembly.
2. The resistance of telescopic sensor is changed according to the forward/backward position of steering column.
3. The terminal voltage of automatic drive positioner control unit will be changed according to a change of telescopic sensor resistance. Automatic drive positioner control unit calculates the telescopic position from the voltage.

DRIVER SIDE: Description

1. The mirror sensor (driver side) is installed to the door mirror (driver side).
2. The resistance of 2 sensors (horizontal and vertical) is changed when the door mirror (driver side) is operated.
3. Automatic drive positioner control unit calculates the door mirror position according to the change of the voltage of 2 sensor input terminals.

PASSENGER SIDE: Description

1. The mirror sensor (passenger side) is installed to the door mirror (passenger side).
2. The resistance of 2 sensors (horizontal and vertical) is changed when the door mirror (passenger side) is operated.
3. Automatic drive positioner control unit calculates the door mirror position according to the change of the voltage of 2 sensor input terminals.

1. The seat sliding motor is installed to the seat cushion frame.
2. The seat sliding motor is installed with the driver seat control unit.
3. The seat is slid forward/backward by changing the rotation direction of sliding motor.

1. The seat reclining motor is installed to the seat back frame.
2. The seat reclining motor is activated with the driver seat control unit.
3. The seatback is reclined forward/backward by changing the rotation direction of reclining motor.

1. The lifting motor (front) is installed to the seat cushion frame.
2. The lifting motor (front) is activated with the driver seat control unit.
3. The lifter (front) is moved upward/downward by changing the rotation direction of lifting motor (front).

1. The lifting motor (rear) is installed to the seat cushion frame.
2. The lifting motor (rear) is activated with the driver seat control unit.
3. The seat lifter (rear) is moved upward/downward by changing the rotation direction of lifting motor (rear).

1. The tilt motor is installed to the steering column assembly.
2. The tilt motor is activated with the automatic drive positioner control unit.
3. The steering column is tilted upward/downward by changing the rotation direction of tilt motor.

1. The telescopic motor is installed to the steering column assembly.
2. The telescopic motor is activated with the automatic drive positioner control unit.
3. Compresses the steering column by changing the rotation direction of telescopic motor.

It makes mirror face operate from side to side and up and down with the electric power that automatic drive positioner control unit supplies.

1. Memory switch is equipped on the seat memory switch installed to the driver side door trim. The operation signal is inputted to the automatic drive positioner control unit when the memory switch is operated.
2. The status of automatic drive positioner system can be checked according to the illuminating/flashing status.

HIGH FLASHER OPERATION

BCM detects the turn signal lamp circuit status by the current value.

BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal lamp operating.

Note. The blinking speed is normal while activating the hazard warning lamp.

The following symptoms are normal operations, and they do not indicate a malfunction.

SYMPTOM TABLE

See also:
• TROUBLE DIAGNOSIS FLOW DIAGRAM