Automatic Drive Positioner: Overview Infiniti M37 IV

Component Description

Scheme 1

The system automatically moves the driver seat, steering column and door mirror position by the driver seat control unit and the automatic drive positioner control unit. The driver seat control unit corresponds with the automatic drive positioner control unit by UART communication.

Note. The lumbar support system are controlled independently with no link to the automatic drive positioner system. Refer to " LUMBAR SUPPORT SYSTEM: SYSTEM DESCRIPTION ".

MANUAL FUNCTION: System Description

The driving position (seat, steering column and door mirror position) can be adjusted manually with power seat switch, tilt & telescopic switch and door mirror remote control switch.

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. NOTE: Seat operates only up to two places at the same time.

SEAT SYNCHRONIZATION FUNCTION: System Description

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 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.

MEMORY FUNCTION: System Description

The driver seat control unit can store the optimum driving positions (seat, steering column and door mirror position) for 2 people. If the front seat position is changed, one-touch (pressing desired memory switch) operation allows changing to the other driving position.

Note. Further information for the memory storage procedure. Refer to " MEMORY STORING: DESCRIPTION ".

1. Turn ignition switch ON.
2. Shift position P position.
3. Push desired memory switch.
4. Driver seat, steering and door mirror will move to the memorized position.

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

EXIT ASSIST FUNCTION: System Description

1. When exiting, the condition is satisfied, the seat is moved backward 40 mm (1.57 in) from normal sitting position and the steering is moved to the most upper position.
2. The seat slide amount and the steering operation at entry/exit operation can be changed. NOTE: This function is set to ON before delivery (initial setting). Further information for the system setting procedure. Refer to " «SYSTEM SETTING: DESCRIPTION»(ref-573574-S12129787732013082200000) ".

1. Shift position P position.
2. Open the driver door with ignition switch in OFF position.
3. 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.

ENTRY ASSIST FUNCTION: System Description

The seat is in the exiting position when following condition is satisfied, the seat returns from exiting position to the previous driving position.

Note. This function is set to ON before delivery (initial setting). Further information for the system setting procedure. Refer to " SYSTEM SETTING: DESCRIPTION ".

1. Turn ignition switch ACC.
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.

INTELLIGENT KEY INTERLOCK FUNCTION: System Description

1. By associating Intelligent Key and automatic drive positioner system, the unlock operation of Intelligent Key or driver side door request switch performs memory function and entry/exit assist function.
2. Registration of Intelligent Key interlock function can register a different key ID to the driver seat control unit, one by one, for memory switch 1 and 2. A total of 2 key IDs can be registered.
3. When ignition switch is OFF (steering lock unit status)*, and door unlock operation is performed using Intelligent Key or driver side door request switch, driver seat automatically adjusts to a driving position other than seat sliding. Seat sliding and steering column tilt perform return operation and are set to standby status.
4. In standby status, when ignition switch is operated from OFF to ACC, return operation sets seat sliding and steering column tilt to a registered position.

*: With steering lock models

Note. When another key ID is newly registered to a key switch to which a key ID is already registered, the previously registered key ID is overwritten and becomes unusable. When starter signal turns ON during return operation, the operation is interrupted, starter signal turns from ON to OFF, and operation restarts.

1. Unlock driver door by Intelligent Key or driver side door request switch.
2. Operation other than memory function of seat sliding is performed. Seat sliding and steering column tilt perform exit assist operation.
3. Turn ignition switch ACC.
4. Driver seat and steering column will return from the exiting position to entry position. NOTE: Further information for Intelligent Key interlock function. Refer to " «INTELLIGENT KEY INTERLOCK STORING: DESCRIPTION»(ref-573574-S13093800582013082200000) ".

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

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL: Description

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

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.

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 will not operate normally if no memory storage is performed.

INTELLIGENT KEY INTERLOCK STORING: Description

Always perform the Intelligent Key interlock function storage when the battery terminal is disconnected or the driver seat control unit is replaced. The 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, 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.

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.

Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1 communication lines. Driver seat control unit receives the operation signals of tilt & telescopic switch, door mirror remote control switch, and the position signals of door mirror sensor from the automatic drive positioner control unit and transmits the operation request signal.

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