lumbar support INFINITI QX56 2011 Factory Service Manual

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-134
< SYMPTOM DIAGNOSIS >
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006248440
The following symptoms are normal operations, and they do not indicate a malfunction.
Symptom Cause Action to take Reference page
Entry/exit assist function do not
operate. No initialization has been performed. Perform initialization.
ADP-52, "
SYSTEM INI-
TIALIZATION : Descrip-
tion"
Entry/exit assist function is disabled.
NOTE:
Entry/exit assist function is set to ON be-
fore delivery (initial setting).Change the settings.
ADP-54, "
SYSTEM
SETTING : Description"
Entry assist function does not op-
erate. Manual operation with power seat switch
was performed after exit assist function
execution. Perform the entry as-
sist function. ADP-18, "ENTRY AS-
SIST FUNCTION : Sys-
tem Description"
Lumbar support does not per-
form memory operation. The lumbar support system are con-
trolled independently with no link to the
automatic drive positioner system.
—
SE-16, "LUMBAR SUP-
PORT SYSTEM : Sys-
tem Description"
Memory function, entry/exit as-
sist function, or Intelligent Key in-
terlock function does not
operate. The operating conditions are not fulfilled.
Fulfill the operation
conditions. Memory function :
ADP-15, "
MEMORY
FUNCTION : System
Description"
Entry assist function :
ADP-18, "
ENTRY AS-
SIST FUNCTION : Sys-
tem Description"
Exit assist function :
ADP-17, "
EXIT ASSIST
FUNCTION : System
Description"
Intelligent Key interlock function : ADP-20, "
IN-
TELLIGENT KEY IN-
TERLOCK FUNCTION :
System Description"
Revision: 2010 May2011 QX56

SE-1
BODY INTERIOR
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SECTION SE
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CONTENTS
SEAT
PRECAUTION ................ ...............................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Service Notice ...........................................................4
Precaution for Work ..................................................4
PREPARATION ............................................6
PREPARATION .............................................. .....6
Commercial Service Tool .................................... ......6
CLIP LIST ............................................................7
Clip List ............................................................... ......7
SYSTEM DESCRIPTION ..............................8
COMPONENT PARTS ................................... .....8
POWER SEAT SYSTEM .............................................8
POWER SEAT SYSTEM : Component Parts Lo-
cation ................................................................... ......
8
POWER SEAT SYSTEM : Component Descrip-
tion ...................................................................... ......
8
LUMBAR SUPPORT SYSTEM .............................. ......8
LUMBAR SUPPORT SYSTEM : Component
Parts Location ..................................................... ......
9
LUMBAR SUPPORT SYSTEM : Component De-
scription .....................................................................
9
SECOND SEAT POWER UNLOCK SYSTEM ....... ......9
SECOND SEAT POWER UNLOCK SYSTEM :
Component Parts Location ......................................
10
SECOND SEAT POWER UNLOCK SYSTEM :
Component Description ...........................................
10
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM ................................................................ ....
10
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM : Component Parts Location ....................
11
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM : Component Description ..................... ....
11
FRONT HEATED SEAT SYSTEM ......................... ....12
FRONT HEATED SEAT SYSTEM : Component
Parts Location ..........................................................
12
FRONT HEATED SEAT SYSTEM : Component
Description ...............................................................
12
SECOND HEATED SEAT SYSTEM ...................... ....13
SECOND HEATED SEAT SYSTEM : Component
Parts Location ..........................................................
13
SECOND HEATED SEAT SYSTEM : Component
Description ...............................................................
13
CLIMATE CONTROLLED SEAT SYSTEM ...............13
CLIMATE CONTROLLED SEAT SYSTEM : Com-
ponent Parts Location .......................................... ....
14
CLIMATE CONTROLLED SEAT SYSTEM : Com-
ponent Description ...................................................
14
SYSTEM ............................................................16
POWER SEAT SYSTEM ....... .....................................16
POWER SEAT SYSTEM : Syst em Description .......16
LUMBAR SUPPORT SYSTEM .............................. ....16
LUMBAR SUPPORT SYSTEM : System Descrip-
tion ...........................................................................
16
SECOND SEAT POWER UNLOCK SYSTEM ...........16
SECOND SEAT POWER UNLOCK SYSTEM :
System Description .............................................. ....
16
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM .....................................................................
16
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM : System Description ............................ ....
16
FRONT HEATED SEAT SYSTEM ......................... ....16
FRONT HEATED SEAT SYSTEM : System De-
scription ...................................................................
16
SECOND HEATED SEAT SYSTEM ...................... ....16
Revision: 2010 May2011 QX56

SE-2
SECOND HEATED SEAT SYSTEM : System De-
scription ..................................................................
16
CLIMATE CONTROLLED SEAT SYSTEM ........... ...17
CLIMATE CONTROLLED SEAT SYSTEM : Sys-
tem Diagram ........................................................ ...
17
CLIMATE CONTROLLED SEAT SYSTEM : Sys-
tem Description .................................................... ...
17
CLIMATE CONTROLLED SEAT SYSTEM : Fail-
safe .........................................................................
17
ECU DIAGNOSIS INFORMATION ..............20
CLIMATE CONTROLLED SEAT CONTROL
UNIT ................................................................ ...
20
Reference Value .................................................. ...20
Fail-safe ..................................................................21
WIRING DIAGRAM .....................................24
POWER SEAT CONTROL SYSTEM (PAS-
SENGER SIDE) ............................................... ...
24
Wiring Diagram .................................................... ...24
LUMBAR SUPPORT SYSTEM ..........................28
Wiring Diagram .................................................... ...28
SECOND SEAT POWER UNLOCK SYSTEM ...33
Wiring Diagram .......................................................33
THIRD SEAT SEATBACK POWER FOLDING
SYSTEM .......................................................... ...
39
Wiring Diagram .................................................... ...39
FRONT HEATED SEAT SYSTEM .....................45
Wiring Diagram .................................................... ...45
SECOND HEATED SEAT SYSTEM ..................50
Wiring Diagram .................................................... ...50
CLIMATE CONTROLLED SEAT SYSTEM .......55
Wiring Diagram .................................................... ...55
BASIC INSPECTION ...................................66
DIAGNOSIS AND REPAIR WORK FLOW ..... ...66
Work Flow ............................................................ ...66
DTC/CIRCUIT DIAGNOSIS ...................... ...67
POWER SUPPLY AND GROUND CIRCUIT .. ...67
CLIMATE CONTROLLED SEAT CONTROL UNIT ...67
CLIMATE CONTROLLED SEAT CONTROL UNIT
: Diagnosis Procedure ............................................
67
CLIMATE CONTROLLED SEAT CONTROL UNIT
: Component Inspection ..........................................
70
CLIMATE CONTROLLED SEAT SWITCH ........72
Component Function Check .............................. ...72
Diagnosis Procedure ..............................................72
Component Inspection ............................................74
SEATBACK THERMAL ELECTRIC UNIT ........75
Component Function Check ............................... ...75
Diagnosis Procedure ...............................................75
SEATBACK THERMAL ELECTRIC UNIT
SENSOR ............................................................
77
Component Function Check ............................... ...77
Diagnosis Procedure ...............................................77
Component Inspection ............................................78
SEAT CUSHION THERMAL ELECTRIC UNIT ...79
Component Function Check ............................... ...79
Diagnosis Procedure ...............................................79
SEAT CUSHION THERMAL ELECTRIC UNIT
SENSOR ............................................................
81
Component Function Check ............................... ...81
Diagnosis Procedure ...............................................81
Component Inspection ............................................82
CLIMATE CONTROLLED SEATBACK
BLOWER MOTOR .............................................
83
Component Function Check ............................... ...83
Diagnosis Procedure ...............................................83
CLIMATE CONTROLLED SEAT CUSHION
BLOWER MOTOR .............................................
86
Component Function Check ............................... ...86
Diagnosis Procedure ...............................................86
CLIMATE CONTROLLED SEAT SWITCH IN-
DICATOR ...........................................................
89
Component Function Check ............................... ...89
Diagnosis Procedure ...............................................89
CLIMATE CONTROLLED SEAT BLOWER
FILTER ...............................................................
91
SEATBACK BLOWER MOTOR ............................. ...91
SEATBACK BLOWER MOTOR : Diagnosis Pro-
cedure .....................................................................
91
SEAT CUSHION BLOWER MOTOR ..................... ...91
SEAT CUSHION BLOWER MOTOR : Diagnosis
Procedure ...............................................................
91
SYMPTOM DIAGNOSIS ............................92
CLIMATE CONTROLLED SEAT DOES NOT
OPERATE. ...................................................... ...
92
Diagnosis Procedure ............................................ ...92
TEMPERATURE ADJUSTMENT IS IMPOSSI-
BLE ....................................................................
94
SEATBACK ............................................................ ...94
SEATBACK : Diagnosis Procedure ........................94
SEAT CUSHION ..................................................... ...94
SEAT CUSHION : Diagnosis Procedure .................94
Revision: 2010 May2011 QX56

SE-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
POWER SEAT SYSTEM
POWER SEAT SYSTEM : Component Parts LocationINFOID:0000000006217356
POWER SEAT SYSTEM : Component DescriptionINFOID:0000000006217357
LUMBAR SUPPORT SYSTEM
1. Lumber support motor 2. Lifting motor 3. Reclining motor
4. Sliding motor
A. View with seat cushion pad and seat
back pad removed. B. Back side of seat cushion
JMJIA4288ZZ
Item Function
BCM Supplies at all times the power received from battery to power seat switch
Power seat switch Built-in reclining switch, sliding switch and lifting switch, controls the power supplied to each motor
Reclining motor With the power supplied from power seat switch, operates the forward and backward movement
of seatback
Sliding motor With the power supplied from power seat switch, operates the forward and backward slide of seat
Lifting motor With the power supplied from power seat switch, operates the up and down movement of seat
cushion
Revision: 2010 May2011 QX56

COMPONENT PARTSSE-9
< SYSTEM DESCRIPTION >
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LUMBAR SUPPORT SYSTEM : Component Parts LocationINFOID:0000000006217358
LUMBAR SUPPORT SYSTEM : Component DescriptionINFOID:0000000006217359
SECOND SEAT POWER UNLOCK SYSTEM
1. Lumber support motor 2. Lifting motor 3. Reclining motor
4. Sliding motor
A. View with seat cushion pad and seat
back pad removed. B. Back side of seat cushion
JMJIA4288ZZ
Item Function
BCM Supplies at all times the power received from battery to power seat switch
Lumbar support switch Controls the power supplied to lumbar support motor
Lumbar support motor With the power supplied from lumbar support switch, operates the forward and backward
movement of seatback support device
Revision: 2010 May2011 QX56

SE-16
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
POWER SEAT SYSTEM
POWER SEAT SYSTEM : System DescriptionINFOID:0000000006217370
Power seat switch can be operated regardless of the ignition switch position, because power supply is always
supplied to power seat switch.
SLIDING OPERATION
While operating the sliding switch located in power s eat switch, sliding motor operates and makes possible the
seat front and back position adjustment.
RECLINING OPERATION
While operating the reclining switch located in power seat switch, reclining motor operates and makes possi-
ble the seat back forward and backward position adjustment.
LIFTING OPERATION
While operating the lifting switch located in power seat switch, lifting motor operates and makes possible the
seat cushion up and down position adjustment.
LUMBAR SUPPORT SYSTEM
LUMBAR SUPPORT SYSTEM : System DescriptionINFOID:0000000006217371
 Lumbar support switch can be operated regardless of t he ignition switch position, because power supply is
always supplied to lumbar support switch.
 While operating the lumbar support switch, lumbar support motor operates which allows forward and back-
ward operation of seatback support.
SECOND SEAT POWER UNLOCK SYSTEM
SECOND SEAT POWER UNLOCK SY STEM : System DescriptionINFOID:0000000006217372
 Second seat power unlock switch can be operated regardl ess of the ignition switch position, because power
supply is always supplied to second seat power unlock switch and power unlock relay.
 Power unlock motor pulls seatback control wire, s eatback folds down, seat lock unlocks, and second seat
tilts up, when second seat power unlock switch is pressed.
THIRD SEAT SEATBACK POWER FOLDING SYSTEM
THIRD SEAT SEATBACK POWER FOLDIN G SYSTEM : System Description
INFOID:0000000006217373
 Third seat fold down switch and third seat reclini ng switch can be operated regardless of the ignition switch
position, because power supply is always supplied to thir d seat fold down switch, third seat reclining switch
and relays.
 Power folding motor operates and seatback reclining and third seat folding can be performed while third seat
fold down switch and third seat reclining switch are operated.
FRONT HEATED SEAT SYSTEM
FRONT HEATED SEAT SYSTEM : System DescriptionINFOID:0000000006217374
Heated seat is a system that operates when ignition switch is in ON position.
HEATER OPERATION
 While operating the heated seat switch, seat cushion heater and seat back heater operate.
 Temperature of seat can be adjust ed by operating on heated seat switch.
SECOND HEATED SEAT SYSTEM
SECOND HEATED SEAT SYSTEM : System DescriptionINFOID:0000000006217375
Heated seat is a system that operates when ignition switch is in ON position.
HEATER OPERATION
 While operating the heated seat switch, seat cushion heater and seat back heater operate.
Revision: 2010 May2011 QX56

SE-28
< WIRING DIAGRAM >
LUMBAR SUPPORT SYSTEM
LUMBAR SUPPORT SYSTEM
Wiring DiagramINFOID:0000000006217382
JCJWM1500GB
Revision: 2010 May2011 QX56

LUMBAR SUPPORT SYSTEMSE-29
< WIRING DIAGRAM >
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JCJWM1501GB
Revision: 2010 May2011 QX56

SE-30
< WIRING DIAGRAM >
LUMBAR SUPPORT SYSTEM
JCJWM1502GB
Revision: 2010 May2011 QX56