Infiniti Q45. Manual - part 811

 

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Infiniti Q45. Manual - part 811

 

 

G SENSOR

SCS-61

C

D

F

G

H

I

J

K

L

M

A

B

SCS

G SENSOR

PFP:98805

Removal and Installation

NES000CJ

CAUTION:

Never drop or strike the vertical G sensor, because it has little endurance to impact.

REMOVAL
Front Vertical G Sensor

1.

Remove the lower dash side finisher. Refer to 

EI-44, "DASH SIDE FINISHER"

 .

2.

Remove the SMJ harness connector bolt.

3.

Remove the IVMS control unit. Refer to 

LAN-8, "REMOVAL"

 .

4.

Disconnect the front vertical G sensor connector.

5.

Remove the front vertical G sensor bolts.

6.

Remove the front vertical G sensor (1).

Rear Vertical G Sensor

1.

Remove the seat cushion trim and pad (RH). Refer to 

SE-191, "Removal and Installation"

 .

2.

Remove the seatback trim and pad (RH). Refer to 

SE-191, "Removal and Installation"

 .

3.

Remove the rear pillar finisher. Refer to 

EI-43, "Removal and Installation"

 .

4.

Disconnect the rear vertical G sensor connector.

5.

Remove the rear vertical G sensor bolts.

6.

Remove the rear vertical G sensor (1).

INSTALLATION

Note the following, and installation is the reverse order of removal.

When installing each vertical G sensor, tighten bolts to the specified torque.

CAUTION:

Never drop or strike the vertical G sensor, because it has little endurance to impact.

After the installation, check each vertical G sensor value on “DATA MONITOR” of CONSULT-II. If it is out-
side the standard, replace each vertical G sensor. Refer to 

SCS-25, "Display Item List"

 .

SEIA0728E

SEIA0729E

Vertical G sensor bolts

: 3.4 N·m (0.35 kg-m, 30 in-lb)

SCS-62

G SENSOR

SE-1

SEAT

I  BODY

CONTENTS

C

D

E

F

G

H

J

K

L

M

SECTION 

SE

A

B

SE

SEAT

PRECAUTIONS .......................................................... 4

Precautions for Supplemental Restraint System 
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Service Notice  .......................................................... 4
Precautions for Work ................................................ 4
Trouble Diagnosis Precaution  .................................. 5

PREPARATION ........................................................... 6

Special Service Tools  ............................................... 6
Commercial Service Tools ........................................ 6

SQUEAK AND RATTLE TROUBLE DIAGNOSES ..... 7

Work Flow  ................................................................ 7

CUSTOMER INTERVIEW ..................................... 7
DUPLICATE THE NOISE AND TEST DRIVE  ....... 8
CHECK RELATED SERVICE BULLETINS  ........... 8
LOCATE THE NOISE AND IDENTIFY THE 
ROOT CAUSE  ...................................................... 8
REPAIR THE CAUSE  ........................................... 8
CONFIRM THE REPAIR  ....................................... 9

Generic Squeak and Rattle Troubleshooting  ........... 9

INSTRUMENT PANEL  .......................................... 9
CENTER CONSOLE ............................................. 9
DOORS ................................................................. 9
TRUNK ................................................................ 10
SUNROOF/HEADLINING ................................... 10
SEATS ................................................................. 10
UNDERHOOD ..................................................... 10

Diagnostic Worksheet  .............................................11

AUTOMATIC DRIVE POSITIONER  .......................... 13

System Description  ................................................ 13

MANUAL OPERATION  ....................................... 13
AUTOMATIC OPERATION  ................................. 13
FAIL–SAFE MODE .............................................. 13
CANCEL OF FAIL-SAFE MODE ......................... 14
MEMORY STORING ........................................... 14
MEMORY SWITCH OPERATION  ....................... 15
TURNOUT OPERATION ..................................... 15
RETURN OPERATION  ....................................... 16
REAR POWER SEAT TURNOUT OPERATION 

... 16

Component Parts and Harness Connector Location 

... 17

Schematic ............................................................... 19
Wiring Diagram — AUT/DP —  ............................... 21
Terminals and Reference Values for BCM .............. 32
Terminals and Reference Values for Driver Seat 
Control Unit ............................................................. 33
Work Flow ............................................................... 35
Preliminary Check  .................................................. 35

SETTING CHANGE FUNCTION  ......................... 35
CHECK POWER SUPPLY AND GROUND CIR-
CUIT .................................................................... 36

CONSULT-II Function ............................................. 39

CONSULT-II BASIC OPERATION PROCEDURE 

... 39

IVMS COMMUNICATION INSPECTION. ............ 40
COMMUNICATION SYSTEM A  .......................... 41
COMMUNICATION SYSTEM B  .......................... 42
COMMUNICATION SYSTEM C  .......................... 42
WORK SUPPORT  ............................................... 43
SELF-DIAGNOSIS RESULTS  ............................. 43
DATA MONITOR  ................................................. 44
ACTIVE TEST  ..................................................... 45

On Board Diagnosis  ............................................... 46

DIAGNOSIS ITEM  ............................................... 46
COMMUNICATION DIAGNOSIS ......................... 46
COMMUNICATION SYSTEM A  .......................... 48
COMMUNICATION SYSTEM B  .......................... 48
COMMUNICATION SYSTEM C  .......................... 48
SWITCH MONITOR  ............................................ 49
ON BOARD DIAGNOSIS FOR AUTOMATIC 
DRIVE POSITIONER  .......................................... 50

Symptom Chart ....................................................... 52
Check Sliding Motor Circuit  .................................... 54
Check Reclining Motor Circuit  ................................ 55
Check Front Lifting Motor Circuit  ............................ 56
Check Rear Lifting Motor Circuit ............................. 58
Check Telescopic Motor Circuit  .............................. 59
Check Tilt Motor Circuit  .......................................... 61
Check Sliding Sensor Circuit  .................................. 63
Check Reclining Sensor Circuit  .............................. 64
Check Front Lifting Sensor Circuit .......................... 65

SE-2

Check Rear Lifting Sensor Circuit  .......................... 66
Check Detention Switch Circuit  .............................. 67
Check Telescopic Sensor Circuit  ............................ 68
Check Tilt Sensor Circuit  ........................................ 69
Check Key Switch and Key Lock Solenoid Circuit ... 70
Check Front Door Switch (Driver Side) Circuit  ....... 72
Check Vehicle Speed Signal  .................................. 73
Check Seat Memory Switch Circuit  ........................ 75
Check Sliding Switch Circuit  ................................... 76
Check Reclining Switch System  ............................. 78
Check Front Lifting Switch Circuit ........................... 80
Check Rear Lifting Switch Circuit  ........................... 82
Check Telescopic Switch  ........................................ 84
Check Tilt Switch  .................................................... 86
Check Seat Memory Indicator lamp System ........... 88
Check Lumber Support Circuit  ............................... 89
Check Rear Power Seat Turnout Operation  ........... 91

POWER SEAT  ........................................................... 92

Component Parts and Harness Connector Location ... 92
System Description ................................................. 93

FRONT POWER SEAT (PASSENGER SIDE) 
OPERATION ........................................................ 93
REAR POWER SEAT LH AND REAR POWER 
SEAT RH OPERATION  ....................................... 94
REAR SEAT TURNOUT/RETURN FUNCTION ... 95

Schematic ............................................................... 96
Wiring Diagram — SEAT — .................................... 97
Terminals and Reference Values for Passenger 
Side Power Seat Switch  ....................................... 103
Terminals and Reference Values for Rear Power 
Seat Control Unit  .................................................. 103
Work Flow ............................................................. 104
Trouble Diagnoses Symptom Chart ...................... 104
Check Power Seat Power Supply Circuit  ............. 105
Check Front Power Seat Passenger Side Power 
Supply Circuit  ....................................................... 105
Check Front Power Seat Passenger Side Sliding 
Circuit ................................................................... 106
Check Front Power Seat Passenger Side Reclining 
Circuit ................................................................... 107
Check Front Power Seat Passenger Side Front Lift-
ing Circuit .............................................................. 108
Check Front Power Seat Passenger Side Rear Lift-
ing Circuit .............................................................. 109
Check Rear Power Seat Control Unit Power Supply 
and Ground Circuit  ............................................... 109

WITH HEATED SEAT  ........................................ 109
WITHOUT HEATED SEAT  ................................ 110

Check Rear Power Seat Sliding Motor Circuit  .......111

WITH HEATED SEAT  .........................................111
WITHOUT HEATED SEAT  ................................ 112

Check Rear Power Seat Switch Circuit  ................ 113

WITH HEATED SEAT  ........................................ 113
WITHOUT HEATED SEAT  ................................ 114

Check Auto Return Cancel Switch Circuit 1  ......... 116

WITH HEATED SEAT  ........................................ 116
WITHOUT HEATED SEAT  ................................ 116

Check Auto Return Cancel Switch Circuit 2  ......... 117

WITH HEATED SEAT  ........................................ 117

WITHOUT HEATED SEAT ................................. 118

Check Rear Door Switch Circuit  ........................... 119

WITH HEATED SEAT  ........................................ 119
WITHOUT HEATED SEAT .................................120

Check Rear Power Seat Sliding Sensor Circuit  ....122

WITH HEATED SEAT  ........................................122
WITHOUT HEATED SEAT .................................123

HEATED SEAT  ........................................................124

Component Parts and Harness Connector Location .124
System Description  ...............................................125

FRONT HEATED SEAT  .....................................125
REAR HEATED SEAT  .......................................125

Wiring Diagram — HSEAT —/Front Heated Seat .127
Schematic/Rear Heated Seat  ...............................129
Wiring Diagram — HSEAT —/Rear Heated Seat .130
Terminals and Reference Values for Rear Power 
Seat Control Unit LH and RH ................................135
Work Flow  .............................................................135
Trouble Diagnoses Symptom Chart  ......................136
Check Heated Seat Power Supply Circuit  ............137
Check Front Heated Seat Switch ..........................137
Check Front Heated Seat Circuit 1  .......................138
Check Front Heated Seat Circuit 2  .......................139
Check Front Heated Seat Circuit 3  .......................141
Check Front Heated Seat Switch Ground Circuit ..142
Check Rear Power Seat Control Unit Power Supply 
Circuit ....................................................................143
Check Rear Power Seat Control Unit Power Supply 
and Ground Circuit ................................................144
Check Rear Power Seat Switch (Heater Switch) 
Ground Circuit  .......................................................145
Check Rear Heated Seat Circuit 1 ........................145
Check Rear Heated Seat Circuit 2 ........................147
Check Rear Heated Seat Circuit 3 ........................148
Check Rear Heated Seat Switch Low Circuit ........149
Check Rear Heated Seat Switch High Circuit  .......151
Check Rear Heated Seat Ground Circuit  ..............152

CLIMATE CONTROLLED SEAT  .............................153

Component Parts and Harness Connector Location .153
System Description  ...............................................154
Schematic .............................................................157
Wiring Diagram — C/SEAT —  ..............................158
Terminal and Reference Value for Climate Con-
trolled Seat Control Unit ........................................163
Work Flow  .............................................................164
Preliminary Check  .................................................164
Trouble Diagnoses Symptom Chart  ......................165
Check Climate Controlled Relay Power Supply Cir-
cuit ........................................................................166
Check Driver Side Climate Controlled Seat Control 
Unit Power Supply and Ground Circuit  .................167
Check Passenger Side Climate Controlled Seat 
Control Unit Power Supply and Ground Circuit .....168
Check Climate Controlled Seat “HEAT” Switch Cir-
cuit ........................................................................170
Check Climate Controlled Seat “COOL” Switch Cir-
cuit ........................................................................171
Check Climate Controlled Seat Temperature Dial .172
Check Climate Controlled Seat Temperature Dial 

 

 

 

 

 

 

 

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