Infiniti G37 Coupe. Manual - part 1237

 

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Infiniti G37 Coupe. Manual - part 1237

 

 

ST-48

< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

Lower Shaft Sliding Range

INFOID:0000000001666259

Unit: mm (in)

Rack Sliding Force

INFOID:0000000001666260

Unit: N (kg, lb)

Rack Stroke

INFOID:0000000001666261

Unit: mm (in)

Socket Swing Force and Rotating Torque

INFOID:0000000001666262

SWING FORCE

Unit: N (kg, lb)

Automatic Models

Rotating torque

0.49 N·m (0.05 kg-m, 4 in-lb)

Item

Standard

JSGIA0032ZZ

Item

Standard

Sliding range

26.5 (1.043)

Item

Standard

Rack sliding force

195 – 258 (19.9 – 26.3, 43.8 – 57.9)

Item

Standard

Rack neutral position, dimension “L”

69.0 (2.717)

SGIA0629J

Item

Spring balance

Outer socket “P

1

4.81 – 45.7 (0.5 – 4.7, 1.1 – 10.3)

SERVICE DATA AND SPECIFICATIONS (SDS)

ST-49

< SERVICE DATA AND SPECIFICATIONS (SDS) 

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

ROTATING TORQUE

Unit: N·m (kg-m, in-lb)

Socket Axial End Play

INFOID:0000000001666263

Unit: mm (in)

Inner Socket Length

INFOID:0000000001666264

Unit: mm (in)

Relief Oil Pressure

INFOID:0000000001666265

Unit: kPa (kg/cm

2

, psi)

Inner socket “P

2

8.9 – 64 (0.9 – 6.5, 2.0 – 14.4)

Item

Spring balance

SGIA1540E

Item

Standard

Outer socket

0.3 – 2.9 (0.03 – 0.29, 3 – 25)

Item

Standard

Outer socket

0.5 (0.02) or less

Inner socket

0.2 (0.008) or less

Item

Standard

Rack neutral position, dimension “L”

63.3 (2.49)

SGIA1512E

Item

Standard

Relief oil pressure

8,530 – 9,330 (87 – 95.2, 1,237 – 1,353)

STC-1

STEERING

C

D

E

F

H

I

J

K

L

M

SECTION 

STC

A

B

STC

N

O

P

CONTENTS

STEERING CONTROL SYSTEM

WITHOUT 4WAS

BASIC INSPECTION  ....................................

6

DIAGNOSIS AND REPAIR WORKFLOW  ..........

6

Work Flow  .................................................................

6

FUNCTION DIAGNOSIS ...............................

7

EPS SYSTEM  ......................................................

7

System Diagram ........................................................

7

System Description  ...................................................

7

Component Parts Location ........................................

9

Component Description .............................................

9

COMPONENT DIAGNOSIS  .........................

10

POWER SUPPLY AND GROUND CIRCUIT ......

10

Description ..............................................................

10

Diagnosis Procedure ...............................................

10

POWER STEERING SOLENOID VALVE  ..........

11

Description ..............................................................

11

Diagnosis Procedure ...............................................

11

Component Inspection  ............................................

12

ENGINE SPEED SIGNAL CIRCUIT  ...................

13

Description ..............................................................

13

Diagnosis Procedure ...............................................

13

VEHICLE SPEED SIGNAL CIRCUIT  .................

15

Description ..............................................................

15

Diagnosis Procedure ...............................................

15

ECU DIAGNOSIS .........................................

17

POWER STEERING CONTROL UNIT  ...............

17

Reference Value  .....................................................

17

Wiring Diagram - ELECTRONICALLY CON-
TROLLED POWER STEERING SYSTEM - ............

18

Fail Safe  ..................................................................

20

SYMPTOM DIAGNOSIS  ..............................

22

UNBALANCE STEERING WHEEL TURNING 
FORCE (TORQUE VARIATION) .......................

22

Description ...............................................................

22

Diagnosis Procedure  ...............................................

22

PRECAUTION ..............................................

23

PRECAUTIONS .................................................

23

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................

23

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect  ...................................

23

ON-VEHICLE REPAIR .................................

24

POWER STEERING CONTROL UNIT ..............

24

Exploded View .........................................................

24

Removal and Installation  .........................................

24

WITH 4WAS

BASIC INSPECTION  ...................................

25

DIAGNOSIS AND REPAIR WORKFLOW  ........

25

Work Flow ................................................................

25

INSPECTION AND ADJUSTMENT  ..................

27

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT  ........................................................

27

ADDITIONAL SERVICE WHEN REPLACING 
CONTROL UNIT : Description .................................

27

4WAS FRONT ACTUATOR NEUTRAL POSITION 
ADJUSTMENT ...........................................................

27

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Description ..........................

27

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 1) .......................................................

27

STC-2

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 2) .....................................................
.

28

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 3) .....................................................
.

28

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 4) .....................................................
.

30

FUNCTION DIAGNOSIS  .............................

32

4WAS SYSTEM  .................................................

32

System Diagram  .....................................................

32

System Description .................................................

33

Component Parts Location  .....................................

35

Component Description  ..........................................

36

EPS SYSTEM  ....................................................

37

System Diagram  .....................................................

37

System Description .................................................

37

Component Parts Location  .....................................

38

Component Description  ..........................................

38

DIAGNOSIS SYSTEM (4WAS FRONT CON-
TROL UNIT)  .......................................................

39

CONSULT-III Function [4WAS(FRONT)] ................

39

DIAGNOSIS SYSTEM (4WAS MAIN CON-
TROL UNIT)  .......................................................

43

CONSULT-III Function [4WAS(MAIN)/RAS/HI-
CAS] ......................................................................
.

43

COMPONENT DIAGNOSIS  ........................

47

C1621, C1622 4WAS FRONT ACTUATOR  ......

47

Description ..............................................................

47

DTC Logic ...............................................................

47

Diagnosis Procedure  ..............................................

47

Component Inspection (4WAS Front Motor)  ..........

48

Special Repair Requirement ...................................

49

C1627 4WAS FRONT ACTUATOR  ...................

50

Description ..............................................................

50

DTC Logic ...............................................................

50

Diagnosis Procedure  ..............................................

50

Special Repair Requirement ...................................

51

C1628 4WAS FRONT ACTUATOR  ...................

52

Description ..............................................................

52

DTC Logic ...............................................................

52

Diagnosis Procedure  ..............................................

52

Component Inspection (Front Wheel Steering An-
gle Sensor)  ............................................................
.

53

Special Repair Requirement ...................................

54

C1631, C1632 4WAS FRONT CONTROL 
UNIT ...................................................................

55

Description ..............................................................

55

DTC Logic ...............................................................

55

Diagnosis Procedure ...............................................

55

Special Repair Requirement  ...................................

56

C1633 4WAS FRONT CONTROL UNIT ............

58

Description ..............................................................

58

DTC Logic  ...............................................................

58

Diagnosis Procedure ...............................................

58

Special Repair Requirement  ...................................

59

C1651 IGNITION POWER SUPPLY ..................

60

Description ..............................................................

60

DTC Logic  ...............................................................

60

Diagnosis Procedure ...............................................

60

Special Repair Requirement  ...................................

61

C1652 4WAS FRONT MOTOR POWER SUP-
PLY ....................................................................

62

Description ..............................................................

62

DTC Logic  ...............................................................

62

Diagnosis Procedure ...............................................

62

Special Repair Requirement  ...................................

63

C1654 4WAS FRONT ACTUATOR RELAY  .....

64

Description ..............................................................

64

DTC Logic  ...............................................................

64

Diagnosis Procedure ...............................................

64

Special Repair Requirement  ...................................

65

C1655 4WAS FRONT DRIVER  .........................

66

Description ..............................................................

66

DTC Logic  ...............................................................

66

Diagnosis Procedure ...............................................

66

Special Repair Requirement  ...................................

66

C1661 4WAS FRONT LOCK SOLENOID 
VALVE ...............................................................

68

Description ..............................................................

68

DTC Logic  ...............................................................

68

Diagnosis Procedure ...............................................

68

Component Inspection (4WAS Front Lock Sole-
noid Valve)  ..............................................................

69

Special Repair Requirement  ...................................

69

C1667 LOCK INSERTION  .................................

70

Description ..............................................................

70

DTC Logic  ...............................................................

70

Diagnosis Procedure ...............................................

70

Special Repair Requirement  ...................................

71

C1668 LOCK HOLDER GAP DETECT  .............

72

Description ..............................................................

72

DTC Logic  ...............................................................

72

Diagnosis Procedure ...............................................

72

Special Repair Requirement  ...................................

72

C1669 INCOMPLETE LOCK RELEASE  ...........

73

Description ..............................................................

73

DTC Logic  ...............................................................

73

Diagnosis Procedure ...............................................

73

Special Repair Requirement  ...................................

73

 

 

 

 

 

 

 

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