INFINITI QX56 2011 Factory User Guide

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

PRECAUTIONSADP-5
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006248300
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56

ADP-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006248301
JMJIA3772GB
1. A/T shift selector (detention switch)Refer to TM-10, "
A/T CONTROL
SYSTEM : Compon ent Parts Loca-
tion"
2. TCM
Refer to TM-10, "
A/T CONTROL
SYSTEM : Component Parts Loca-
tion"
3. Door mirror (passenger side)
4. Unified meter and A/C amp. Refer to MWI-6, "
METER SYSTEM :
Component Parts Location"
5. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion"
6. Tilt & telescopic switch
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

COMPONENT PARTSADP-9
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Door mirror (driver side/
passenger side) Door mirror 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.
Mirror sensor  Mirror sensor is inst
alled to door mirror.
 The resistance of 2 sensors (horizontal and vertical) is changed when door mirror is operated.
 Automatic drive positioner control unit calculates door mirror po- sition according to the change of the voltage of 2 sensor input
terminals.
Tilt motor Tilt motor
 Tilt motor is installed to steering column assembly.
 Tilt motor is activated with automatic drive positioner control unit.
 Steering column is tilted upward/downward by changing the ro-
tation direction of tilt motor.
Tilt sensor  Tilt sensor is integrated in tilt motor.
 The resistance of tilt sensor is changed according to the up/
down position of steering column.
 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.
Telescopic motor Te l e s c o p i c m o t o r
 Telescopic motor is installed to steering column assembly.
 Telescopic motor is activated with automatic drive positioner
control unit.
 Compresses steering column by changing the rotation direction
of telescopic motor.
Telescopic sensor  Telescopic sensor is integrated in telescopic motor.
 The resistance of telescopic sensor is changed according to the
forward/backward position of steering column.
 The terminal voltage of automatic drive positioner control unit will be changed according to a change of telescopic sensor re-
sistance.
 Automatic drive positioner control unit calculates the telescopic position from the voltage.
Sliding motor Sliding motor
 Seat sliding motor is installed to the seat cushion frame.
 Seat sliding motor is activated with driver seat control unit.
 Slides the seat frontward/ rearward by changing the rotation di-
rection of sliding motor.
Sliding sensor  Sliding sensor is integrated in sliding motor.
 The pulse signal is input to driver seat control unit when sliding
is performed.
 Driver seat control unit counts the pulse and calculates the slid- ing amount of the seat.
Reclining motor Reclining motor
 Seat reclining motor is installed to seat back frame.
 Seat reclining motor is activated with driver seat control unit.
 Seatback is reclined frontward/rearward by changing the rota-
tion direction of reclining motor.
Reclining sensor  Reclining sensor is integrated in reclining motor.
 The pulse signal is input to driver seat control unit when the re-
clining is operated.
 Driver seat control unit counts the pulse and calculates the re- clining amount of the seat.
Lifting motor (front) Lifting motor (front)
 Lifting motor (front) is installed to seat side cushion frame.
 Lifting motor is activated with driver seat control unit.
 Seat lifter (front) is moved upward/downward by changing the
rotation direction of lifting motor (front).
Lifting sensor (front)  Lifting sensor (front) is inst
alled in lifting motor (rear).
 When lifting motor (rear) operates, pulse signal is transmitted to driver seat control unit from lifting sensor. Driver seat control unit
counts the pulse and calculates the lift position (rear) of the seat.
Component parts Description
Revision: 2010 May2011 QX56

ADP-10
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Lifting motor (rear)Lifting motor (rear)
 Lifting motor (rear) is installed to seat slide cushion frame.
 Lifting motor (rear) is activated with driver seat control unit.
 Seat lifter (rear) is moved upward/downward by changing the ro-
tation direction of lifting motor (rear).
Lifting sensor (rear)  Lifting sensor (rear) is installed to seat side cushion frame.
 The pulse signal is input to driver seat control unit when lifting
(rear) is operated.
 Driver seat control unit counts the pulse and calculates the lifting (rear) amount of the seat.
Component parts Description
Revision: 2010 May2011 QX56

SYSTEMADP-11
< SYSTEM DESCRIPTION >
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SYSTEM
AUTOMATIC DRIVE POSITIONER SYSTEM
AUTOMATIC DRIVE POSITIONER SYSTEM : System DiagramINFOID:0000000006248303
AUTOMATIC DRIVE POSITIONER SYSTEM : System DescriptionINFOID:0000000006248304
The system automatically moves the driver seat, steer ing column and door mirror position by the driver seat
control unit and the automatic drive positioner control uni t. The driver seat control unit corresponds with the
automatic drive positioner control unit by UART communication.
JMJIA3773GB
Revision: 2010 May2011 QX56