Infiniti M35/M45 Y50. Manual — part 112

SERVICE DATA AND SPECIFICATIONS (SDS)

AT-371

D

E

F

G

H

I

J

K

L

M

A

B

AT

Vehicle Speed at Which Lock-Up Occurs/Releases

NCS001RF

2WD MODELS

●

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

●

At half throttle, the accelerator opening is 4/8 of the full opening.

●

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

●

At half throttle, the accelerator opening is 4/8 of the full opening.

AWD MODELS

●

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

●

At half throttle, the accelerator opening is 4/8 of the full opening.

Stall Speed

NCS001RG

Line Pressure

NCS001RH

A/T Fluid Temperature Sensor

NCS001RI

Engine model

VQ35DE

Throttle position

Vehicle speed km/h (MPH)

Lock-up ON

Lock-up OFF

Closed throttle

53 - 61 (33 - 38)

50 - 58 (31 - 36)

Half throttle

196 - 204 (122 - 127)

138 - 146 (86 - 91)

Engine model

VK45DE

Throttle position

Vehicle speed km/h (MPH)

Lock-up ON

Lock-up OFF

Closed throttle

67 - 75 (42 - 47)

50 - 58 (31 - 36)

Half throttle

181 - 189 (112 - 117)

160 - 168 (99 - 104)

Engine model

VQ35DE

Throttle position

Vehicle speed km/h (MPH)

Lock-up ON

Lock-up OFF

Closed throttle

51 - 59 (32 - 37)

48 - 56 (30 - 35)

Half throttle

188 - 196 (117 - 122)

132 - 140 (82 - 87)

Engine model

Stall speed

VQ35DE

2,650 - 2,950 rpm

VK45DE

2,260 - 2,560 rpm

Engine speed

Line pressure [kPa (kg/cm

2

, psi)]

“R” position

“D”, “M” positions

At idle speed

425 - 465 (4.3 - 4.7, 62 - 67)

379 - 428 (3.9 - 4.4, 55 - 62)

At stall speed

1,605 - 1,950 (16.4 - 19.9, 233 - 283)

1,310 - 1,500 (13.4 - 15.3, 190 - 218)

Name

Condition

CONSULT-II “DATA MONITOR” (Approx.)

Resistance (Approx.)

ATF TEMP SE 1

0

°

C (32

°

F)

3.3 V

15 k

Ω

20

°

C (68

°

F)

2.7 V

6.5 k

Ω

80

°

C (176

°

F)

0.9 V

0.9 k

Ω

ATF TEMP SE 2

0

°

C (32

°

F)

3.3 V

10 k

Ω

20

°

C (68

°

F)

2.5 V

4 k

Ω

80

°

C (176

°

F)

0.7 V

0.5 k

Ω

AT-372

SERVICE DATA AND SPECIFICATIONS (SDS)

Turbine Revolution Sensor

NCS001RJ

Vehicle Speed Sensor A/T (Revolution Sensor)

NCS001RK

Reverse Brake

NCS001RL

*: Always check with the Parts Department for the latest parts information.

Total End Play

NCS001RM

BEARING RACE FOR ADJUSTING TOTAL END PLAY

*: Always check with the Parts Department for the latest parts information.

Name

Condition

Data

(Approx.)

Turbine revolution
sensor 1

When running at 50 km/h (31 MPH) in 4th speed with the closed throttle position signal “OFF”.

1.3 kHz

Turbine revolution
sensor 2

When running at 20 km/h (12 MPH) in 1st speed with the closed throttle position signal “OFF”.

Name

Condition

Data (Approx.)

Revolution sensor

When running at 20 km/h (12 MPH).

185 Hz

Model code number

98X1D, 98X6C, 98X1C, 98X6D, 95X7A

Number of drive plates

6

Number of driven plates

6

Clearance

mm (in)

Standard

0.7 - 1.1 (0.028 - 0.043)

Thickness of retaining plates

Thickness

mm (in)

Part number*

4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
5.2 (0.205)

31667 90X14
31667 90X15
31667 90X16
31667 90X17
31667 90X18
31667 90X19

Total end play

mm (in)

0.25 - 0.55 (0.0098 - 0.0217)

Thickness

mm (in)

Part number*

0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.4 (0.055)
1.6 (0.063)
1.8 (0.071)

31435 95X00
31435 95X01
31435 95X02
31435 95X03
31435 95X04
31435 95X05

ATC-1

AUTOMATIC AIR CONDITIONER

J AIR CONDITIONER

CONTENTS

C

D

E

F

G

H

I

K

L

M

SECTION

ATC

A

B

ATC

AUTOMATIC AIR CONDITIONER

PRECAUTIONS . . . . . . . . . . . . . . .. 5

Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” . . . . . . . . . . . . . . . . .. 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect . . . . . . . . . . .. 5

OPERATION PROCEDURE . . . . . . . . . 5

Precautions for Procedures without Cowl Top Cover

. . 6

Precautions for Working with HFC-134a (R-134a)

. . 6

CONTAMINATED REFRIGERANT . . . . . ... 7

General Refrigerant Precautions . . . . . . . .. 7
Precautions for Refrigerant Connection . . . . ... 7

ABOUT ONE-TOUCH JOINT . . . . . . . . 7
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION . . . . . . . . . . . . . 10
O-RING AND REFRIGERANT CONNECTION ... 10

Precautions for Servicing Compressor . . . . ... 12
Precautions for Service Equipment . . . . . . 13

RECOVERY/RECYCLING EQUIPMENT . . . 13
ELECTRICAL LEAK DETECTOR . . . . . ... 13
VACUUM PUMP . . . . . . . . . . . . . 13
MANIFOLD GAUGE SET . . . . . . . . . 13
SERVICE HOSES . . . . . . . . . . . ... 14
SERVICE COUPLERS . . . . . . . . . . 14
REFRIGERANT WEIGHT SCALE . . . . . .. 14
CHARGING CYLINDER . . . . . . . . . .. 14

Precautions for Leak Detection Dye . . . . . ... 15

IDENTIFICATION . . . . . . . . . . . . 15
IDENTIFICATION LABEL FOR VEHICLE . . ... 15

PREPARATION . . . . . . . . . . . . . . . 16

Special Service Tools . . . . . . . . . . . . 16
HFC-134a (R-134a) Service Tools and Equipment

... 17

Commercial Service Tools . . . . . . . . . .. 19

REFRIGERATION SYSTEM . . . . . . . . . . 20

Refrigerant Cycle . . . . . . . . . . . . ... 20

REFRIGERANT FLOW . . . . . . . . . ... 20
FREEZE PROTECTION . . . . . . . . . . 20

Refrigerant System Protection . . . . . . . ... 20

REFRIGERANT PRESSURE SENSOR . . . . 20
PRESSURE RELIEF VALVE . . . . . . . ... 20

Variable Displacement Compressor . . . . . ... 21

GENERAL INFORMATION . . . . . . . . . 21
DESCRIPTION . . . . . . . . . . . . . 22

Component Layout . . . . . . . . . . . . . 25

LUBRICANT . . . . . . . . . . . . . . . .. 26

Maintenance of Lubricant Quantity in Compressor ... 26

LUBRICANT . . . . . . . . . . . . . . 26
LUBRICANT RETURN OPERATION . . . . .. 26
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR . . . . . . . . . . . . .. 27
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT . . . . . ... 27

AIR CONDITIONER CONTROL . . . . . . . ... 29

Description of Air Conditioner LAN Control System ... 29
System Construction . . . . . . . . . . . .. 29

OPERATION . . . . . . . . . . . . . . 30
TRANSMISSION DATA AND TRANSMISSION
ORDER . . . . . . . . . . . . . . . ... 30
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) . . . . . . . . . . 31
FAN SPEED CONTROL . . . . . . . . . .. 31
INTAKE DOOR CONTROL . . . . . . . . . 31
MODE DOOR CONTROL . . . . . . . . ... 31
UPPER VENTILATOR DOOR CONTROL . . .. 31
MAGNET CLUTCH CONTROL . . . . . . ... 32
SELF-DIAGNOSIS SYSTEM . . . . . . . .. 32

Description of Control System . . . . . . . . 33
Control Operation . . . . . . . . . . . . ... 33

DISPLAY SCREEN . . . . . . . . . . . .. 33
MULTIFUNCTION SWITCH . . . . . . . . 34
DISPLAY SCREEN . . . . . . . . . . . .. 34
MODE SWITCH (DRIVER SIDE) . . . . . . 34
MODE SWITCH (PASSENGER SIDE) . . . . 34
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (DRIVER
SIDE) . . . . . . . . . . . . . . . . ... 34
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (PASSEN-
GER SIDE) . . . . . . . . . . . . . . .. 34

ATC-2

AUTO SWITCH . . . . . . . . . . . . ... 34
DEFROSTER (DEF) SWITCH . . . . . . . . 34
UPPER VENT SWITCH . . . . . . . . . .. 34
A/C SWITCH . . . . . . . . . . . . . ... 35
FAN SWITCHES . . . . . . . . . . . . .. 35
OFF SWITCH . . . . . . . . . . . . . .. 35
REAR WINDOW DEFOGGER SWITCH . . . . 35
INTAKE SWITCH . . . . . . . . . . . . . 35
DUAL SWITCH . . . . . . . . . . . . . 35

Control Operation (Rear Control Switch) . . . . 35

AUTO SWITCH . . . . . . . . . . . . ... 35
FAN SWITCH . . . . . . . . . . . . . .. 35
REAR TEMPERATURE CONTROL SWITCH . . 36

Fail-Safe Function . . . . . . . . . . . . .. 36
Discharge Air Flow . . . . . . . . . . . . . 37
System Description . . . . . . . . . . . . . 38

SWITCHES AND THEIR CONTROL FUNCTION ... 38

CAN Communication System Description . . . .. 39

TROUBLE DIAGNOSIS . . . . . . . . . . . 40

CONSULT-II Function (ECM) . . . . . . . . .. 40

CONSULT-II BASIC OPERATION . . . . . ... 40
DATA MONITOR . . . . . . . . . . . . .. 40

How to Perform Trouble Diagnosis for Quick and
Accurate Repair . . . . . . . . . . . . . .. 40

WORK FLOW . . . . . . . . . . . . . .. 40
SYMPTOM TABLE . . . . . . . . . . . .. 41

Component Parts and Harness Connector Location ... 42

ENGINE COMPARTMENT . . . . . . . . .. 42
PASSENGER COMPARTMENT . . . . . . .. 43

Schematic . . . . . . . . . . . . . . . ... 44
Wiring Diagram —A/C— . . . . . . . . . . . 46
Auto Amp. Terminals and Reference Value . . . 54

PIN CONNECTOR TERMINAL LAYOUT . . . 54
TERMINALS AND REFERENCE VALUE FOR
UNIFIED METER AND A/C AMP. . . . . . . 54

Self-diagnosis Function . . . . . . . . . . .. 56

DESCRIPTION . . . . . . . . . . . . . 56
FUNCTION CONFIRMATION PROCEDURE . .. 57
AUXILIARY MECHANISM: TEMPERATURE
SETTING TRIMMER . . . . . . . . . . ... 63
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER . . . . . . . . . . ... 64
AUXILIARY MECHANISM: INLET PORT MEM-
ORY FUNCTION . . . . . . . . . . . . . 64

Operational Check . . . . . . . . . . . . .. 65

CHECKING MEMORY FUNCTION . . . . . . 65
CHECKING BLOWER . . . . . . . . . . . 65
CHECKING DISCHARGE AIR (MODE SWITCH
AND DEF SWITCH) . . . . . . . . . . . 65
CHECKING DISCHARGE AIR (UPPER VENT
SWITCH) . . . . . . . . . . . . . . . . 66
CHECKING INTAKE AIR . . . . . . . . . . 66
CHECKING TEMPERATURE DECREASE . . . 66
CHECKING TEMPERATURE INCREASE . . .. 66
CHECKING A/C SWITCH . . . . . . . . ... 66
CHECKING AUTO MODE . . . . . . . . ... 66

Power Supply and Ground Circuit for Auto Amp. ... 67

INSPECTION FLOW . . . . . . . . . . ... 67
COMPONENT DESCRIPTION . . . . . . . 68

DIAGNOSIS PROCEDURE FOR A/C SYSTEM ...68

Rear Control Switch Circuit . . . . . . . . . .70

DIAGNOSIS PROCEDURE FOR REAR CON-
TROL SWITCH . . . . . . . . . . . . . 70

LAN System Circuit . . . . . . . . . . . . .71

DIAGNOSIS PROCEDURE FOR LAN CIRCUIT ...71

Mode Door Motor Circuit . . . . . . . . . . .76

INSPECTION FLOW . . . . . . . . . . . 76
SYSTEM DESCRIPTION . . . . . . . . . .77
COMPONENT DESCRIPTION . . . . . . . 78
DIAGNOSIS PROCEDURE FOR MODE DOOR
MOTOR . . . . . . . . . . . . . . . . 78

Upper Ventilator Door Motor Circuit . . . . . . 79

INSPECTION FLOW . . . . . . . . . . . 79
SYSTEM DESCRIPTION . . . . . . . . . .80
COMPONENT DESCRIPTION . . . . . . . 81
DIAGNOSIS PROCEDURE FOR UPPER VEN-
TILATOR DOOR MOTOR . . . . . . . . . 81

Air Mix Door Motor Circuit . . . . . . . . . ...82

INSPECTION FLOW . . . . . . . . . . . 82
SYSTEM DESCRIPTION . . . . . . . . . .83
COMPONENT DESCRIPTION . . . . . . . 84
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR
MOTOR . . . . . . . . . . . . . . . . 84

Air Mix Door Motor PBR Circuit . . . . . . . ..84

DIAGNOSIS PROCEDURE FOR AIR MIX DOOR
MOTOR PBR . . . . . . . . . . . . . ...84

Intake Door Motor Circuit . . . . . . . . . . 85

INSPECTION FLOW . . . . . . . . . . . 85
SYSTEM DESCRIPTION . . . . . . . . . .86
COMPONENT DESCRIPTION . . . . . . . 87
DIAGNOSIS PROCEDURE FOR INTAKE DOOR
MOTOR . . . . . . . . . . . . . . . . 87

Blower Motor Circuit . . . . . . . . . . . . 88

INSPECTION FLOW . . . . . . . . . . . 88
SYSTEM DESCRIPTION . . . . . . . . . .89
COMPONENT DESCRIPTION . . . . . . . 90
DIAGNOSIS PROCEDURE FOR BLOWER
MOTOR . . . . . . . . . . . . . . . . 90
COMPONENT INSPECTION . . . . . . . ...92

Magnet Clutch Circuit . . . . . . . . . . . ..93

INSPECTION FLOW . . . . . . . . . . . 93
SYSTEM DESCRIPTION . . . . . . . . . .94
DIAGNOSIS PROCEDURE FOR MAGNET
CLUTCH . . . . . . . . . . . . . . . ..94
COMPONENT INSPECTION . . . . . . . ...97

Insufficient Cooling . . . . . . . . . . . . ..98

INSPECTION FLOW . . . . . . . . . . . 98
PERFORMANCE TEST DIAGNOSIS . . . . 100
PERFORMANCE CHART . . . . . . . . ..102
TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SURE . . . . . . . . . . . . . . . . .104
DIAGNOSIS PROCEDURE FOR INSUFFI-
CIENT COOLING . . . . . . . . . . . ...106

Insufficient Heating . . . . . . . . . . . ...108

INSPECTION FLOW . . . . . . . . . . ..108

Noise . . . . . . . . . . . . . . . . . .109

INSPECTION FLOW . . . . . . . . . . ..109

Self-diagnosis . . . . . . . . . . . . . ... 110