Infiniti Q45. Manual — part 811

G SENSOR

SCS-61

C

D

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G

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M

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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

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G

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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