2011 INFINITI QX56 seat memory

ADP-1
BODY INTERIOR
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SECTION ADP
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CONTENTS
AUTOMATIC DRIVE POSITIONER
PRECAUTION ................ ...............................5
PRECAUTIONS .............................................. .....5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
Component Parts Location .................................. ......6
Component Description ............................................7
SYSTEM .............................................................11
AUTOMATIC DRIVE POSITIONER SYSTEM ....... ....11
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Diagram ......................................................
11
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description .................................................
11
MANUAL FUNCTION ............................................ ....12
MANUAL FUNCTION : System Diagram ................13
MANUAL FUNCTION : System Description ............13
MEMORY FUNCTION ........................................... ....14
MEMORY FUNCTION : System Diagram ...............15
MEMORY FUNCTION : System Description ..........15
EXIT ASSIST FUNCTION ...................................... ....17
EXIT ASSIST FUNCTION : System Diagram .........17
EXIT ASSIST FUNCTION : Sy stem Description .....17
ENTRY ASSIST FUNCTION ................................. ....18
ENTRY ASSIST FUNCTION : System Diagram .....18
ENTRY ASSIST FUNCTION : System Description
....
18
INTELLIGENT KEY INTERLOCK FUNCTION ...... ....19
INTELLIGENT KEY INTERLOCK FUNCTION :
System Diagram ......................................................
20
INTELLIGENT KEY INTERLOCK FUNCTION :
System Description .................................................
20
Fail Safe .............................................................. ....21
DIAGNOSIS SYSTEM (DRIVER SEAT CON-
TROL UNIT) ......................................................
22
CONSULT-III Function ............................................22
ECU DIAGNOSIS INFORMATION ..............25
DRIVER SEAT CONTROL UNIT ......................25
Reference Value .................................................. ....25
Fail Safe ..................................................................30
DTC Index ...............................................................31
AUTOMATIC DRIVE POSITIONER CON-
TROL UNIT ........................................................
32
Reference Value ......................................................32
BCM (BODY CONTROL MODULE) .................35
List of ECU Reference .............................................35
WIRING DIAGRAM ......................................36
AUTOMATIC DRIVE POSITIONER SYSTEM ...36
Wiring Diagram .................................................... ....36
BASIC INSPECTION ...................................48
DIAGNOSIS AND REPAIR WORK FLOW .......48
Work Flow ............................................................ ....48
INSPECTION AND ADJUSTMENT ..................51
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ....
51
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Description .....
51
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement .....................................................
51
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ....
51
Revision: 2010 May2011 QX56

ADP-2
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ................................
51
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .....
52
SYSTEM INITIALIZATION . .......................................52
SYSTEM INITIALIZATION : Description .................52
SYSTEM INITIALIZATION : Special Repair Re-
quirement ............................................................. ...
52
MEMORY STORING .............................................. ...53
MEMORY STORING : Description .........................53
MEMORY STORING : Special Repair Require-
ment ........................................................................
53
INTELLIGENT KEY INTERLOCK STORING ........ ...53
INTELLIGENT KEY INTERLOCK STORING : De-
scription ..................................................................
54
INTELLIGENT KEY INTERLOCK STORING :
Special Repair Requirement ...................................
54
SYSTEM SETTING ...................................................54
SYSTEM SETTING : Descrip tion ...........................54
SYSTEM SETTING : Specia l Repair Requirement
...
55
DTC/CIRCUIT DIAGNOSIS ...................... ...56
U1000 CAN COMM CIRCUIT ......................... ...56
Description ........................................................... ...56
DTC Logic ...............................................................56
Diagnosis Procedure .............................................56
Special Repair Requirement ...................................56
U1010 CONTROL UNIT (CAN) .........................57
DTC Logic ............................................................ ...57
Diagnosis Procedure ..............................................57
B2112 SLIDING MOTOR ...................................58
DTC Logic ............................................................ ...58
Diagnosis Procedure .............................................58
B2113 RECLINING MOTOR ..............................60
DTC Logic ............................................................ ...60
Diagnosis Procedure .............................................60
B2116 TILT MOTOR ..........................................62
DTC Logic ............................................................ ...62
Diagnosis Procedure .............................................62
B2128 UART COMMUNICATION LINE ............64
Description ........................................................... ...64
DTC Logic ...............................................................64
Diagnosis Procedure .............................................64
B2130 EEPROM ................................................66
DTC Logic ............................................................ ...66
Diagnosis Procedure .............................................66
POWER SUPPLY AND GROUND CIRCUIT .....67
DRIVER SEAT CONTROL UNIT ........................... ...67
DRIVER SEAT CONTROL UNIT :
Diagnosis Procedure ..............................................
67
DRIVER SEAT CONTROL UNIT : Special Repair
Requirement ...........................................................
67
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT ........................................................................ ...
67
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : Diagnosis Procedure ..................................
67
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : Special Repair Requirement ........................
68
SLIDING SWITCH .............................................69
Component Function Check ............................... ...69
Diagnosis Procedure ..............................................69
Component Inspection ............................................70
RECLINING SWITCH ........................................71
Component Function Check ............................... ...71
Diagnosis Procedure ..............................................71
Component Inspection ............................................72
LIFTING SWITCH (FRONT) ..............................73
Component Function Check ............................... ...73
Diagnosis Procedure ..............................................73
Component Inspection ............................................74
LIFTING SWITCH (REAR) ................................75
Component Function Check ............................... ...75
Diagnosis Procedure ..............................................75
Component Inspection ............................................76
TILT SWITCH ....................................................77
Component Function Check ............................... ...77
Diagnosis Procedure ..............................................77
Component Inspection ............................................78
TELESCOPIC SWITCH .....................................79
Component Function Check ............................... ...79
Diagnosis Procedure ..............................................79
Component Inspection ............................................80
SEAT MEMORY SWITCH .................................81
Component Function Check ............................... ...81
Diagnosis Procedure ..............................................81
Component Inspection ............................................82
DOOR MIRROR REMOTE CONTROL
SWITCH .............................................................
83
CHANGEOVER SWITCH ....................................... ...83
CHANGEOVER SWITCH : Component Function
Check ......................................................................
83
CHANGEOVER SWITCH : Diagnosis Procedure ...83
CHANGEOVER SWITCH : Component Inspec-
tion ..........................................................................
84
MIRROR SWITCH .................................................. ...84
MIRROR SWITCH : Component Function Check ...84
MIRROR SWITCH : Diagnosis Procedure ..............85
MIRROR SWITCH : Component Inspection ...........86
Revision: 2010 May2011 QX56

ADP-3
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POWER SEAT SWITCH GROUND CIRCUIT ....87
Diagnosis Procedure .......................................... ....87
TILT &TELESCOPIC SWITCH GROUND CIR-
CUIT ....................................................................
88
Diagnosis Procedure ........................................... ....88
SLIDING SENSOR .............................................89
Component Function Check .............................. ....89
Diagnosis Procedure ..............................................89
RECLINING SENSOR ........................................91
Component Function Check .............................. ....91
Diagnosis Procedure ..............................................91
LIFTING SENSOR (FRONT) ..............................93
Component Function Check .............................. ....93
Diagnosis Procedure ..............................................93
LIFTING SENSOR (REAR) ................................95
Component Function Check .............................. ....95
Diagnosis Procedure ..............................................95
TILT SENSOR ....................................................97
Component Function Check .............................. ....97
Diagnosis Procedure ..............................................97
TELESCOPIC SENSOR .....................................99
Component Function Check .............................. ....99
Diagnosis Procedure ..............................................99
MIRROR SENSOR ...........................................102
DRIVER SIDE ........................................................ ..102
DRIVER SIDE : Component Function Check ......102
DRIVER SIDE : Diagnosis Procedure ..................102
PASSENGER SIDE .................................................103
PASSENGER SIDE :
Component Function Check .............................. ..
103
PASSENGER SIDE : Diagnosis Procedure .........104
SLIDING MOTOR .............................................106
Component Function Check .............................. ..106
Diagnosis Procedure ............................................106
RECLINING MOTOR ........................................108
Component Function Check .............................. ..108
Diagnosis Procedure ............................................108
LIFTING MOTOR (FRONT) ..............................110
Component Function Check .............................. ..110
Diagnosis Procedure ............................................110
LIFTING MOTOR (REAR) ................................112
Component Function Check .............................. ..112
Diagnosis Procedure ............................................112
TILT MOTOR ....................................................114
Component Function Check .............................. ..114
Diagnosis Procedure ............................................114
TELESCOPIC MOTOR .....................................116
Component Function Check .............................. ..116
Diagnosis Procedure ............................................116
DOOR MIRROR MOTOR ................................118
Component Function Check ..................................118
Diagnosis Procedure .............................................118
Component Inspection ...........................................119
SEAT MEMORY INDICATOR .........................120
Component Function Check ................................120
Diagnosis Procedure ............................................120
SYMPTOM DIAGNOSIS ............................122
MANUAL FUNCTION DOES NOT OPERATE .122
ALL COMPONENT ................................................ ..122
ALL COMPONENT : Diagnosis Procedure ...........122
POWER SEAT ....................................................... ..122
POWER SEAT : Diagnosis Procedure ..................122
TILT & TELESCOPIC ............................................ ..122
TILT & TELESCOPIC : Diagnosis Procedure ........122
SEAT SLIDING ...................................................... ..123
SEAT SLIDING : Diagnosis Procedure .................123
SEAT RECLINING ................................................. ..123
SEAT RECLINING : Diagnosis Procedure ............123
SEAT LIFTING (FRONT) ....................................... ..124
SEAT LIFTING (FRONT) : Diagnosis Procedure ..124
SEAT LIFTING (REAR) ...........................................124
SEAT LIFTING (REAR) : Diagnosis Procedure .....124
STEERING TILT ..................................................... ..125
STEERING TILT : Diagnosis Procedure ...............125
STEERING TELESCOPIC ..................................... ..125
STEERING TELESCOPIC : Diagnosis Procedure ..125
DOOR MIRROR ..................................................... ..126
DOOR MIRROR : Diagnosis Procedure ................126
MEMORY FUNCTION DOES NOT OPERATE .127
ALL COMPONENT ................................................ ..127
ALL COMPONENT : Diagnosis Procedure ...........127
SEAT SLIDING ...................................................... ..127
SEAT SLIDING : Diagnosis Procedure .................127
SEAT RECLINING ................................................. ..128
SEAT RECLINING : Diagnosis Procedure ............128
SEAT LIFTING (FRONT) ....................................... ..128
SEAT LIFTING (FRONT) : Diagnosis Procedure ..128
SEAT LIFTING (REAR) ...........................................128
SEAT LIFTING (REAR) : Diagnosis Procedure .....128
STEERING TILT ..................................................... ..129
STEERING TILT : Diagnosis Procedure ...............129
Revision: 2010 May2011 QX56

ADP-4
STEERING TELESCOPIC .......................................129
STEERING TELESCOPIC : Diagnosis Procedure ..129
DOOR MIRROR ..................................................... ..130
DOOR MIRROR : Diagnosis Procedure ................130
ENTRY/EXIT ASSIST FUNCTION DOES NOT
OPERATE ........................................................
131
Diagnosis Procedure ........................................... ..131
INTELLIGENT KEY INTERLOCK FUNCTION
DOES NOT OPERATE ....................................
132
Diagnosis Procedure ........................................... ..132
MEMORY INDICATE DOES NOT OPERATE .133
Diagnosis Procedure .............................................133
NORMAL OPERATING CONDITION ..............134
Description ........................................................... ..134
REMOVAL AND INSTALLATION .............135
DRIVER SEAT CONTROL UNIT .................... ..135
Removal and Installation ...................................... .135
AUTOMATIC DRIVE POSITIONER CON-
TROL UNIT .......................................................
136
Removal and Installation ...................................... .136
SEAT MEMORY SWITCH ................................137
Removal and Installation ...................................... .137
POWER SEAT SWITCH ...................................138
Removal and Installation ...................................... .138
TILT&TELESCOPIC SWITCH ..........................139
Removal and Installation ...................................... .139
Revision: 2010 May2011 QX56

COMPONENT PARTSADP-7
< SYSTEM DESCRIPTION >
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Component DescriptionINFOID:0000000006248302
7. ABS actuator and electric unit (con- trol unit)
Refer to BRC-10, "
Component Parts
Location" (With VDC) or BRC-142,
"Component Parts Location" (With
BRAKE ASSIST) or BRC-149,
"Component Parts Location" (With
INTELLIGENT BRAKE ASSIST) 8. Door mirror remote
control switch 9. Seat memory switch
10. Sliding, lifting switch 11. Reclining switch 12. Driver side door switch
13. Door mirror (driver side) 14. T ilt motor 15. Telescopic motor
16. Automatic drive positioner control unit 17. Lifting motor (rear) 18.
Diver seat control unit
19. Lifting motor (front) 20. Sliding motor 21. Reclining motor
A. View with steering column cover low- er removed B. View with instrument lower panel LH
removed C. View with seat cushion pad and seat
back pad removed
D. Backside of seat cushion E. View with seat cushion pad and seat back pad removed
Component parts Description
Driver seat control unit  Main units of automatic drive positioner system.
 It is connected to the CAN.
 It communicates with automatic drive positioner control unit via
UART communication.
 It perform memory function after receiving the door unlock signal
from BCM.
 The address of each part is recorded.
 Operates each motor of seat to the registered position.
 Requests the operation of steering column and door mirror to automatic drive positioner control unit
 Operates the specific seat motor with the signal from power seat
switch.
 Transmits the ignition switch signal (ACC/ON) via UART com- munication to automatic driver positioner control unit.
Automatic drive positioner control unit  It communicates with driver seat control unit via UART commu-
nication.
 Perform various controls with the instructions of driver seat con- trol unit.
 Perform the controls of tilt & telescopic, door mirror and seat memory switch.
 Operates steering column and door mirror with the signal from the driver seat control
BCM Recognizes the following status and transmits it to driver seat con-
trol unit via CAN communication.
 Handle position: LHD
 Driver door: OPEN/CLOSE
 Ignition switch position: ACC/ON
 Steering lock unit status: LOCK/UNLOCK
 Door lock: UNLOCK (with Intelligent key or driver side door re-
quest switch operation)
Key ID
 Starter: CRANKING/OTHER
IPDM E/R ON/OFF signal of A/T shift selector (detention switch) is transmit-
ted to driver seat control unit via CAN communication.
TCM The following signals are transmitted to driver seat control unit via
CAN communication.
 Shift position signal (P range)
 Identification of transmission: A/T
Unified meter and A/C amp. Transmit the vehicle speed signal to driver seat control unit via
CAN communication.
Revision: 2010 May2011 QX56

ADP-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
ABS actuator and electric unit (control unit)Transmit the vehicle speed signal to driver seat control unit via
CAN communication.
A/T sift selector (Detention switch)  Detention switch is installed on A/T shift selector. It is turned
OFF when A/T shift selector is in P position.
 Driver seat control unit judges that A/T shift selector is in P posi- tion if continuity does not exist in this circuit.
Door mirror remote con-
trol switch Mirror switch
 Mirror switch is integrated in
door mirror remote control switch.
 It operates angle of door mirror face.
 It transmits mirror face adjust operation to automatic drive posi- tioner control unit.
Changeover switch  Changeover switch is integrated
in door mirror remote control
switch.
 Changeover switch has three positions (L, N and R).
 It changes operating door mirror motor by transmitting control signal to automatic drive positioner control unit.
Open/close switch  Open/close switch is integrated in door mirror remote control
switch.
 Power is supplied to folding mi rror from door mirror remote con-
trol switch when operating switch.
Tilt & telescopic switch Tilt switch
 Tilt switch is equipped to steering column.
 The operation signal is input to automatic drive positioner control
unit when tilt switch is operated.
Telescopic switch  Telescopic switch is equipped to steering column.
 The operation signal is input to automatic drive positioner control
unit when telescopic switch is operated.
Seat memory switch Set switch
It is used for registration and setting change of driving position and
Intelligent Key interlock function.
Seat memory switch  The maximum 2 driving positions can be registered by memory
switch 1 to 2.
 Driving position is set to the registered driving position when memory switch is pressed while operation conditions are satis-
fied.
Seat memory indicator Memory indicator indicates the status of auto driving position sys-
tem by turning ON or blinking.
Power seat switch Sliding switch
 Sliding switch is equipped to power seat switch on seat cushion
side surface.
 The operation signal is input to driver seat control unit when slid- ing switch is operated.
Reclining switch  The operation signal is input to driver seat control unit when re-
clining switch is operated.
 The operation signal is input to driver seat control unit when re-
clining switch is operated.
Lifting switch (front)  Lifting switch (front) is equipped to power seat switch on seat
cushion side surface.
 The operation signal is input to driver seat control unit when lift-
ing switch (front) is operated.
Lifting switch (rear)  Lifting switch (rear) is equipped to power seat switch on seat
cushion side surface.
 The operation signal is input to driver seat control unit when lift-
ing switch (rear) is operated.
Component parts Description
Revision: 2010 May2011 QX56

ADP-12
< SYSTEM DESCRIPTION >
SYSTEM
NOTE:
The lumbar support system are controlled independently with no link to the automatic drive positioner system.
Refer to SE-16, "
LUMBAR SUPPORT SYSTEM : System Description".
Sleep control
Driver seat control unit equips sleep control for reducing power consumption.
The system switches to sleep control when al l of the following conditions are satisfied.
 Ignition switch is OFF (steering lock status).
 All devices of auto driving pos ition system are not operating.
 45 seconds timer of driver s eat control unit is not operating.
 Set switch and memory switch (1 and 2) are OFF.
Wake-up control
Sleep control releases when detecting status change in either of the following item.
 CAN communication
 Power seat switch
 Set switch and seat memory switch (1 and 2)
 Tilt & telescopic switch
MANUAL FUNCTION
Function Description
Manual function The driving position (seat, steering column and door mirror position) can be adjusted
by using the power seat switch, tilt & telescopic switch or door mirror remote control
switch.
Memory function The seat, steering column and door mirror move to the stored driving position by
pressing seat memory switch (1 or 2).
Entry/Exit assist function Exit On exit, the seat moves backward and the steering column moves upward.
Entry
On entry, the seat and steering column returns from exiting position to the previous
driving position.
Intelligent Key interlock function Perform memory operation, exiting operation and entry operation by Intelligent Key
unlock operation or driver side door request switch unlock operation.
Revision: 2010 May2011 QX56

ADP-14
< SYSTEM DESCRIPTION >
SYSTEM
DETAIL FLOW
Seat
NOTE:
The power seat can be operated manually regardless of the ignition switch position.
Tilt & Telescopic
Door Mirror
NOTE:
The door mirrors can be operated manually when ignition switch is in either ACC or ON position.
MEMORY FUNCTION
Order Input Output Control unit condition
1 Power seat switch
(sliding, lifting, reclin-
ing)
—The power seat switch signal is inputted to the driver seat control
unit when the power seat switch is operated.
2— Motors
(sliding, lifting, reclin-
ing)The driver seat control unit outputs signals to each motor accord-
ing to the power seat switch input signal.
Order Input Output Control unit condition
1 Tilt & telescopic switch — The tilt & telescopic switch signal is inputted to the automatic
drive positioner control unit when the tilt & telescopic switch is op-
erated.
2— Motors
(Tilt, telescopic)The automatic drive positioner control unit actuates each motor
according to the operation of the tilt & telescopic switch.
Order Input Output Control unit condition
1 Door mirror remote
control switch — The door mirror remote control switch signal is inputted to the au-
tomatic drive positioner control unit when the door mirror remote
control switch is operated.
2— Motors
(Door mirror motor)The automatic drive positioner control unit actuates each motor
according to the operation of the door mirror remote control switch.
Revision: 2010 May2011 QX56