Nissan Maxima Service and Repair Manual: Entry assist function

ENTRY ASSIST FUNCTION : System Diagram

ENTRY ASSIST FUNCTION : System Description

OUTLINE

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

NOTE:

• This function is set to OFF before delivery (initial setting).
• Further information for the system setting procedure. Refer to Owner's Manual.

OPERATION PROCEDURE

1. Turn the ignition switch to ACC.
2. Front seat LH and steering column will return from the exiting position to entry position.

OPERATION CONDITION

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

Item	Request status
Seat, steering column	The vehicle is not moved after performing the exit assist function.
Switch inputs Power seat switch ADP steering switch Door mirror control switch Set switch Memory switch	OFF (Not operated)
CVT selector lever	P position

DETAIL FLOW

Order	Input	Output	Control unit condition
1	Door switch/Ignition	-	Driver seat control unit receives the signals of ignition switch signal and front door switch from BCM via CAN communication
2	-	Motors (sliding, tilt)	Driver seat control unit operates the sliding motor when the operating conditions are satisfied and requests the operation of tilt motor to automatic drive positioner control unit via UART communication. The automatic drive positioner control unit operates the tilt motor
	Sensors (sliding, tilt)	-	Each sensor monitors the operating positions of seat and steering column, then stops the operation of motor when each part reaches the recorded address

ENTRY ASSIST FUNCTION : Component Parts Location

1. Push-button ignition switch M38
2. BCM M16, M17, M18, M19 (view with instrument panel removed)
3. TCM F15
4. A. ADP steering switch M39
   B. Tilt motor M71, telescopic motor M73
5. A. Power seat switch LH B213
   B. Reclining motor B222
   C. Driver seat control unit B203, B211
6. Automatic drive positioner control unit M63, M67 (view with instrument panel removed)
7. A. Door mirror LH D4
   B. Door mirror RH D107
   C. Front door switch LH B8
8. Door mirror remote control switch M108
9. Seat memory switch D13
   : Front

ENTRY ASSIST FUNCTION : Component Description

CONTROL UNITS

Item	Function
Driver seat control unit	According to the ignition signal and front door switch LH signal from BCM, Operates the seat sliding motor for a constant amount. Requests the operation of tilt motor to automatic drive positioner control uni
Automatic drive positioner control unit	Operates the tilt motor with the instructions from the driver seat control unit.
BCM	Recognizes the following status and transmits it to the driver seat control unit via CAN communication. Front door LH: OPEN/CLOSE - Ignition switch position: ACC/ON

INPUT PARTS

Switches

Item	Function
Front door switch LH	Detect front door LH open/close status.

Sensors

Item	Function
Tilt sensor	Detect the up/down position of steering column.
Sliding sensor	Detect the front/rear position of seat.

OUTPUT PARTS

Item	Function
Tilt motor	Move the steering column up/down.
Sliding motor	Slide the seat forward/back