Infiniti M35/M45 Y50. Manual - part 1051

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SEAT

I  BODY

CONTENTS

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SECTION 

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SEAT

PRECAUTIONS .......................................................... 3

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Service Notice  .......................................................... 3
Precautions for Work ................................................ 3

PREPARATION ........................................................... 4

Special Service Tools  ............................................... 4
Commercial Service Tools ........................................ 4

SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 5

Work Flow  ................................................................ 5

CUSTOMER INTERVIEW ..................................... 5
DUPLICATE THE NOISE AND TEST DRIVE  ....... 6
CHECK RELATED SERVICE BULLETINS  ........... 6
LOCATE THE NOISE AND IDENTIFY THE 
ROOT CAUSE  ...................................................... 6
REPAIR THE CAUSE  ........................................... 6
CONFIRM THE REPAIR  ....................................... 7

Generic Squeak and Rattle Troubleshooting  ........... 7

INSTRUMENT PANEL  .......................................... 7
CENTER CONSOLE ............................................. 7
DOORS ................................................................. 7
TRUNK .................................................................. 8
SUNROOF/HEADLINING ..................................... 8
SEATS ................................................................... 8
UNDERHOOD ....................................................... 8

Diagnostic Worksheet  .............................................. 9

AUTOMATIC DRIVE POSITIONER  ...........................11

Component Parts And Harness Connector Location 

....11

System Description  ................................................ 12

MANUAL OPERATION  ....................................... 12
MEMORY OPERATION  ...................................... 12
EXITING OPERATION  ........................................ 14
ENTRY OPERATION  .......................................... 14
INTELLIGENT KEY INTERLOCK OPERATION 

... 15

FAIL-SAFE MODE  .............................................. 15
INITIALIZATION PROCEDURE  .......................... 16
SETTING CHANGE FUNCTION ......................... 16

CAN Communication System Description .............. 16

CAN Communication Unit ....................................... 16
Schematic ............................................................... 17
Wiring Diagram — AUT/DP —  ............................... 19
Terminals and Reference Values for BCM .............. 31
Terminals and Reference Value for Intelligent Key 
Unit ......................................................................... 31
Terminals and Reference Values for Driver Seat 
Control Unit ............................................................. 32
Terminals and Reference Values for Automatic 
Drive Positioner Control Unit  .................................. 34
CONSULT-II Function (AUTO DRIVE POS.)  .......... 37

CONSULT-II START PROCEDURE  .................... 37
SELF-DIAGNOSIS RESULTS  ............................. 37
DATA MONITOR  ................................................. 38
ACTIVE TEST  ..................................................... 39
WORK SUPPORT  ............................................... 39

Work Flow ............................................................... 40
Symptom Chart ....................................................... 40
CAN Communication Inspection Using CONSULT-
II (Self-Diagnosis)  ................................................... 42
Check BCM Power Supply and Ground Circuit  ...... 42
Check Driver Seat Control Unit Power Supply and 
Ground Circuit  ........................................................ 43
Check Automatic Drive Positioner Control Unit 
Power Supply and Ground Circuit  .......................... 44
Check Sliding Motor Circuit  .................................... 45
Check Reclining Motor Circuit  ................................ 46
Check Front Lifting Motor Circuit  ............................ 47
Check Rear Lifting Motor Circuit ............................. 49
Check Telescopic Motor Circuit  .............................. 50
Check Tilt Motor Circuit  .......................................... 51
Check Sliding Sensor Circuit  .................................. 53
Check Reclining Sensor Circuit  .............................. 55
Check Front Lifting Sensor Circuit .......................... 57
Check Rear Lifting Sensor Circuit  .......................... 59
Check Telescopic Sensor Circuit  ............................ 61
Check Tilt Sensor Circuit  ........................................ 63
Check Door Mirror Sensor LH Circuit  ..................... 64
Check Door Mirror Sensor RH Circuit  .................... 67
Check Sliding Switch Circuit ................................... 69

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Check Reclining Switch Circuit  ............................... 71
Check Lifting Switch (Front) Circuit  ........................ 73
Check Lifting Switch (Rear) Circuit  ......................... 75
Check Power Seat Switch Ground Circuit  .............. 76
Check Telescopic Switch Circuit  ............................. 77
Check Tilt Switch Circuit  ......................................... 79
Check Seat Memory and Set Switch Circuit  ........... 81
Check Seat Memory Indicator Lamp Circuit  ........... 82
Check Door Mirror Sensor Power Supply and 
Ground Circuit  ........................................................ 84
Check A/T Device (Detention Switch) Circuit  ......... 86
Check Front Door Switch (Driver Side) Circuit  ....... 87
Check UART Communication Line Circuit .............. 88
Check Lumbar Support Circuit  ............................... 90

POWER SEAT(PASSENGER SIDE) ......................... 92

Schematic ............................................................... 92
Wiring Diagram — SEAT — .................................... 93

POWER SEAT(REAR)  .............................................. 96

Component Parts and Harness Connector Location ... 96
System Description ................................................. 96

REAR POWER SEAT LH AND RH OPERATION ... 96
REAR SEAT RETREAT FUNCTION  ................... 97

Schematic ............................................................... 98
Wiring Diagram — R/SEAT —  ................................ 99
Terminals and Reference Values for Rear Seat Con-
trol Unit  ................................................................. 103
Work Flow ............................................................. 104
Trouble Diagnoses Symptom Chart ...................... 104
Check Rear Power Seat Power Supply Circuit ..... 104
Check Rear Seat Control Unit Power Supply and 
Ground Circuit  ...................................................... 105
Check Rear Seat Sliding Motor Circuit  ................. 106
Check Rear Power Seat Switch Circuit  ................ 107
Check Automatic Return Cancel Switch Circuit .... 109
Check Automatic Return Cancel Switch  ............... 110
Check Rear Door Switch Circuit  ............................111
Check Rear Seat Sliding Sensor Circuit  ............... 112

CLIMATE CONTROLLED SEAT ............................. 114

Component Parts and Harness Connector Location .114
System Description ............................................... 114
Schematic ............................................................. 118
Wiring Diagram — C/SEAT —  .............................. 119
Terminal and Reference Value for Climate Con-
trolled Seat Control Unit  ....................................... 124
Work Flow ............................................................. 125
Trouble Diagnoses Symptom Chart ...................... 126
Preliminary Check  ................................................ 126
Check Climate Controlled Seat Control Unit Power 
Supply Circuit  ....................................................... 127
Check Climate Controlled Seat Control Unit Power 
Supply and Ground Circuit  ................................... 128
Check Climate Controlled Seat Switch Power Sup-

ply Circuit  ..............................................................131
Check Climate Controlled Seat Switch Circuit  ......132
Check Climate Controlled Seat Switch Indicator Cir-
cuit ........................................................................134
Check Seat Cushion Thermal Electric Device Cir-
cuit ........................................................................136
Check Seatback Thermal Electric Device Circuit ..137
Check Seat Cushion Thermal Electric Device Sen-
sor Circuit ..............................................................138
Check Seatback Thermal Electric Device Sensor 
Circuit ....................................................................140
Check Climate Controlled Seat Blower Motor Circuit .141
Check Climate Controlled Seat Control Unit  .........143

HEATED SEAT  ........................................................144

Component Parts and Harness Connector Location .144
System Description  ...............................................144
Schematic .............................................................146
Wiring Diagram — HSEAT —  ...............................147
Terminals and Reference Values for Rear Seat Con-
trol Unit ..................................................................152
Work Flow  .............................................................152
Trouble Diagnoses Symptom Chart  ......................152
Check Rear Heated Seat Power Supply and Ground 
Circuit ....................................................................153
Check Rear Seat Control Unit Power Supply and 
Ground Circuit  .......................................................154
Check Rear Heated Seat Switch Circuit  ...............156
Check Rear Heated Seat Indicator Power Supply 
Circuit ....................................................................158
Check Rear Heated Seat Indicator Circuit  ............159
Check Rear Heated Seat Circuit ...........................161
Check Rear Seatback Heater Circuit  ....................162

FRONT SEAT  ..........................................................164

Driver's Seat Components  ....................................164
Passenger's Seat Components .............................166
Removal and Installation .......................................168

REMOVAL ..........................................................168
INSTALLATION ..................................................168

Disassembly and Assembly  ..................................169

SEATBACK ........................................................169
SEAT CUSHION  ................................................170
CLIMATE CONTROLLED SEAT  ........................172

REAR SEAT .............................................................173

Bench Seat Components  ......................................173
Power Seat (Split Type) Components  ...................175
Removal and Installation .......................................177

BENCH SEAT  ....................................................177
POWER SEAT  ...................................................177

Disassembly and Assembly  ..................................178

BENCH SEAT  ....................................................178
POWER SEAT  ...................................................180

PRECAUTIONS

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G

H

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M

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PRECAUTIONS

PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT 
BELT PRE-TENSIONER”

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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity 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 and SB section of this Service Man-
ual.

WARNING:

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To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

●

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.

Service Notice

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When removing or installing various parts, place a cloth or padding onto the vehicle body to prevent
scratches.

●

Handle trim, molding, instruments, grille, etc. carefully during removing or installing. Be careful not to oil or
damage them.

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Apply sealing compound where necessary when installing parts.

●

When applying sealing compound, be careful that the sealing compound does not protrude from parts.

●

When replacing any metal parts (for example body outer panel, members, etc.), be sure to take rust pre-
vention measures.

Precautions for Work

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When removing or disassembling each component, be careful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.

●

When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the compo-
nent with a shop cloth or vinyl tape to protect it.

●

Protect the removed parts with a shop cloth and keep them.

●

Replace a deformed or damaged clip.

●

If a part is specified as a non-reusable part, always replace it with new one.

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Be sure to tighten bolts and nuts securely to the specified torque.

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After re-installation is completed, be sure to check that each part works normally.

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Follow the steps below to clean components.

–

Water soluble foul: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the
fouled area.
Then rub with a soft and dry cloth.

–

Oily foul: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe
the fouled area.
Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub
with a soft and dry cloth.

●

Do not use organic solvent such as thinner, benzene, alcohol, and gasoline.

●

For genuine leather seats, use a genuine leather seat cleaner.

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PREPARATION

PREPARATION

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Special Service Tools

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The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

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Tool number
(Kent-Moore No.)
Tool name

Description

(J39570)
Chassis ear

Locating the noise

(J43980)
NISSAN Squeak and Rattle 
Kit

Repairing the cause of noise

SIIA0993E

SIIA0994E

Tool name

Description

Engine ear

Locating the noise

SIIA0995E