Infiniti Q45 (FY33). Manual — part 446
INCH TO METRIC CONVERSION TABLE
(Rounded-off for automotive use)
inches
mm
inches
mm
.100
2.54
.610
15.49
.110
2.79
.620
15.75
.120
3.05
.630
16.00
.130
3.30
.640
16.26
.140
3.56
.650
16.51
.150
3.81
.660
16.76
.160
4.06
.670
17.02
.170
4.32
.680
17.27
.180
4.57
.690
17.53
.190
4.83
.700
17.78
.200
5.08
.710
18.03
.210
5.33
.720
18.29
.220
5.59
.730
18.54
.230
5.84
.740
18.80
.240
6.10
.750
19.05
.250
6.35
.760
19.30
.260
6.60
.770
19.56
.270
6.86
.780
19.81
.280
7.11
.790
20.07
.290
7.37
.800
20.32
.300
7.62
.810
20.57
.310
7.87
.820
20.83
.320
8.13
.830
21.08
.330
8.38
.840
21.34
.340
8.64
.850
21.59
.350
8.89
.860
21.84
.360
9.14
.870
22.10
.370
9.40
.880
22.35
.380
9.65
.890
22.61
.390
9.91
.900
22.86
.400
10.16
.910
23.11
.410
10.41
.920
23.37
.420
10.67
.930
23.62
.430
10.92
.940
23.88
.440
11.18
.950
24.13
.450
11.43
.960
24.38
.460
11.68
.970
24.64
.470
11.94
.980
24.89
.480
12.19
.990
25.15
.490
12.45
1.000
25.40
.500
12.70
2.000
50.80
.510
12.95
3.000
76.20
.520
13.21
4.000
101.60
.530
13.46
5.000
127.00
.540
13.72
6.000
152.40
.550
13.97
7.000
177.80
.560
14.22
8.000
203.20
.570
14.48
9.000
228.60
.580
14.73
10.000
254.00
.590
14.99
20.000
508.00
.600
15.24
METRIC TO INCH CONVERSION TABLE
(Rounded-off for automotive use)
mm
inches
mm
inches
1
.0394
51
2.008
2
.079
52
2.047
3
.118
53
2.087
4
.157
54
2.126
5
.197
55
2.165
6
.236
56
2.205
7
.276
57
2.244
8
.315
58
2.283
9
.354
59
2.323
10
.394
60
2.362
11
.433
61
2.402
12
.472
62
2.441
13
.512
63
2.480
14
.551
64
2.520
15
.591
65
2.559
16
.630
66
2.598
17
.669
67
2.638
18
.709
68
2.677
19
.748
69
2.717
20
.787
70
2.756
21
.827
71
2.795
22
.866
72
2.835
23
.906
73
2.874
24
.945
74
2.913
25
.984
75
2.953
26
1.024
76
2.992
27
1.063
77
3.031
28
1.102
78
3.071
29
1.142
79
3.110
30
1.181
80
3.150
31
1.220
81
3.189
32
1.260
82
3.228
33
1.299
83
3.268
34
1.339
84
3.307
35
1.378
85
3.346
36
1.417
86
3.386
37
1.457
87
3.425
38
1.496
88
3.465
39
1.535
89
3.504
40
1.575
90
3.543
41
1.614
91
3.583
42
1.654
92
3.622
43
1.693
93
3.661
44
1.732
94
3.701
45
1.772
95
3.740
46
1.811
96
3.780
47
1.850
97
3.819
48
1.890
98
3.858
49
1.929
99
3.898
50
1.969
100
3.937
Attachment No.7
TID
CID
Three way catalyst function (Bank 1)
P0420
01H
01H
Max.
X
-
Three way catalyst function (Bank 2)
P0430
03H
02H
Max.
X
-
P0440
05H
03H
Max.
X
-
EVAP SYSTEM
P1440
05H
03H
Max.
X
-
EVAP control system purge flow monitoring
P1447
06H
83H
Min.
X
mV
P0133
09H
04H
Max.
X
ms
P0131
0AH
84H
Min.
X
mV
P0130
0BH
04H
Max.
X
mV
P0132
0CH
04H
Max.
X
mV
P0134
0DH
04H
Max.
X
s
P0153
11H
05H
Max.
X
ms
P0151
12H
85H
Min.
X
mV
P0150
13H
05H
Max.
X
mV
P0152
14H
05H
Max.
X
mV
P0154
15H
05H
Max.
X
s
P0139
19H
86H
Min.
X
mV/500ms
P0137
1AH
86H
Min.
X
mV
P0140
1BH
06H
Max.
X
mV
P0138
1CH
06H
Max.
X
mV
P0159
21H
87H
Min.
X
mV/500ms
P0157
22H
87H
Min.
X
mV
P0160
23H
07H
Max.
X
mV
P0158
24H
07H
Max.
X
mV
P0135
29H
08H
Max.
X
mV
P0135
2AH
88H
Min.
X
mV
P0155
2BH
09H
Max.
X
mV
P0155
2CH
89H
Min.
X
mV
P0141
2DH
0AH
Max.
X
mV
P0141
2EH
8AH
Min.
X
mV
P0161
2FH
0BH
Max.
X
mV
P0161
30H
8BH
Min.
X
mV
P0400
31H
8CH
Min.
X
℃
P0400
32H
8CH
Min.
X
℃
P0400
33H
8CH
Min.
X
℃
P0400
34H
8CH
Min.
X
℃
P1402
35H
0CH
Max.
X
℃
P0402
36H
0CH
Max.
X
-
P0402
37H
8CH
Min.
X
-
TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)
The following is the information specified in Mode 6 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
Items for which these data (test value and test limit) are displayed are the same as SRT code items.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
: Applicable ・: Not applicable
Te s t limit Application
Unit
CATALYST
SRT item
Self-diagnostic test item
DTC
Test value
(GST display)
EVAP control system (Small leak)
HO2S
Heated oxygen sensor 1(Bank 1)
Heated oxygen sensor 1(Bank 2)
Heated oxygen sensor 2(Bank 1)
Heated oxygen sensor 2(Bank 2)
HO2S HTR
Heated oxygen sensor 1 heater(Bank 1)
Heated oxygen sensor 2 heater(Bank 2)
Heated oxygen sensor 2 heater(Bank 1)
Heated oxygen sensor 2 heater(Bank 2)
EGR SYSTEM
EGR function
EGRC-BPT valve function
GENERAL INFORMATION
CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . ...2
Precautions for Supplemental Restraint System
(SRS)
. . . . . . . . . . . . . ..2
Precautions for IVIS (Infiniti Vehicle Immobilizer
System - NATS). . . . . . . . . . . . . . ...2
Precautions for INFINITI Communicator (IVCS) . . .3
General Precautions . . . . . . . . . . . . . 3
Precautions for Multiport Fuel Injection System
or Engine Control System . . . . . . . . . . ...5
Precautions for Three Way Catalyst. . . . . . . 5
Precautions for Engine Oils. . . . . . . . . . .6
Precautions for Fuel . . . . . . . . . . . . . 7
Precautions for Air Conditioning . . . . . . . . ..7
HOW TO USE THIS MANUAL. . . . . . . . . . 8
HOW TO READ WIRING DIAGRAMS. . . . . . ..10
Sample/Wiring Diagram - EXAMPL - . . . . . . 10
Description . . . . . . . . . . . . . . . . .12
HOW TO CHECK TERMINAL. . . . . . . . . ...20
Connector and Terminal Pin Kit. . . . . . . . .20
How to Probe Connectors . . . . . . . . . . .20
How to Check Enlarged Contact Spring of
Terminal . . . . . . . . . . . . . . . . . .21
Waterproof Connector Inspection . . . . . . . ..22
Terminal Lock Inspection . . . . . . . . . . ...22
HOW TO PERFORM EFFICIENT DIAGNOSIS FOR
AN ELECTRICAL INCIDENT . . . . . . . . . . 23
Work Flow. . . . . . . . . . . . . . . . ..23
Incident Simulation Tests. . . . . . . . . . ...24
Circuit Inspection . . . . . . . . . . . . . ...27
HOW TO FOLLOW FLOW CHART IN TROUBLE
DIAGNOSES . . . . . . . . . . . . . . . . ..33
How to Follow This Flow Chart . . . . . . . . .34
CONSULT-II CHECKING SYSTEM . . . . . . . ...36
Function and System Application . . . . . . . ..36
Nickel Metal Hydride Battery Replacement. . . ...36
Checking Equipment. . . . . . . . . . . . ..37
CONSULT-II Data Link Connector (DLC) Circuit . ..37
IDENTIFICATION INFORMATION. . . . . . . . .38
Model Variation . . . . . . . . . . . . . . ..38
Identification Number. . . . . . . . . . . . .39
Dimensions . . . . . . . . . . . . . . . . 40
Wheels and Tires. . . . . . . . . . . . . ...40
LIFTING POINTS AND TOW TRUCK TOWING. . ...41
Preparation . . . . . . . . . . . . . . . . 41
Board-on Lift . . . . . . . . . . . . . . . ..41
Garage Jack and Safety Stand . . . . . . . . .42
2-pole Lift . . . . . . . . . . . . . . . . ...43
Tow Truck Towing . . . . . . . . . . . . . ..43
TIGHTENING TORQUE OF STANDARD BOLTS . . 45
SAE J1930 TERMINOLOGY LIST . . . . . . . . 46
SAE J1930 Terminology List . . . . . . . . . .46
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
Observe the following precautions to ensure safe and proper
servicing.
SGI646
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT
PRE-TENSIONER”
The Supplemental Restraint System “AIR BAG” and “SEAT BELT
PRE-TENSIONER”, used along with a seat belt, help to reduce the
risk or severity of injury to the driver and front passenger in a fron-
tal collision. The Supplemental Restraint System consists of air bag
modules (located in the center of the steering wheel and on the
instrument panel on the passenger side), seat belt pre-tensioners,
a diagnosis sensor unit, warning lamp, wiring harness and spiral
cable. In addition to the supplemental air bag modules for a fron-
tal collision, the supplemental side air bag used along with the seat
belt helps to reduce the risk or severity of injury to the driver and
front passenger in a side collision. The supplemental side air bag
consists of air bag modules (located in the outer side of front
seats), satellite sensor, diagnosis sensor unit (one of components
of supplemental air bags for a frontal collision), wiring harness,
warning lamp (one of components of supplemental air bags for a
frontal collision). Information necessary to service the system
safely is included in the RS section in this Service Manual.
WARNING:
I
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 performed by an authorized INFINITI
dealer.
I
Improper maintenance, including incorrect removal and
installation of the SRS, can lead to personal injury caused
by unintentional activation of the system.
I
Do not use electrical test equipment on any circuit related
to the SRS unless instructed to in this Service Manual.
SRS wiring harnesses (except “SEAT BELT PRE-TEN-
SIONER” connector) can be identified with yellow harness
connector (and with yellow harness protector or yellow
insulation tape before the harness connectors).
Precautions for IVIS (Infiniti Vehicle
Immobilizer System — NATS)
NATS (Nissan Anti-Theft System)
NATS will immobilize the engine if someone tries to start it without
the registered key of NATS.
Both of the originally supplied ignition key IDs have been NATS
registered.
PRECAUTIONS
GI-2
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