Nissan Altima L32. Manual - part 1395

 

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Nissan Altima L32. Manual - part 1395

 

 

SERVICE DATA AND SPECIFICATIONS (SDS)

ST-33

< SERVICE DATA AND SPECIFICATIONS (SDS) 

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Unit: mm (in)

Steering Gear

INFOID:0000000004204041

STEERING OUTER SOCKET AND INNER SOCKET

RACK STROKE

Tilt operating range "L

1

"

41 (1.61)

Telescopic operating range "L

2

"

40 (1.57)

SGIA1179E

Steering gear type

PR26AF

Outer socket

Swinging torque

0.1 - 2.9 N·m (0.01 - 0.29 kg-m, 1.0 - 25 in-lb)

Measurement on spring balance
Measuring point: cotter pin hole of stud

1.4 - 42.7 N (0.14 - 4.4 kg, 12 - 31 lb)

Rotating torque

0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3.0 - 25 in-lb)

Axial end play

0.5 mm (0.020 in) or less

Inner socket

Swinging torque

0.1 - 7.8 N·m (0.01 - 0.79 kg-m, 1.0 - 69 in-lb)

• Measurement on spring balance
• Measuring point at* mark shown

0.8 - 64 N (0.082 - 6.5 kg, 0.18 - 14.4 lb)

Axial end play

0.2 mm (0.008 in) or less

Inner socket length “L”

Nominal

93.3 mm (3.673 in)

Maximum

98.3 mm (3.870 in)

SGIA0950E

ST-34

< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

Oil Pump

INFOID:0000000004204042

Steering Fluid

INFOID:0000000004204043

Steering gear model

PR26AF

Tire size

P215/60R16

P215/55R17

P235/45R18

Rack neutral position, dimension “L” (rack stroke)

71.5 mm (2.815 in)

69.0 mm (2.717 in)

66.5 mm (2.167 in)

AWGIA0003GB

Oil pump relief hydraulic pressure

8,520 - 9,320 kPa (86.9 - 95.1 kg/cm

2

, 1,235 - 1,351 psi)

Fluid type and capacity

Refer to 

MA-12, "Fluids and Lubricants"

.

STC-1

STEERING

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SECTION 

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CONTENTS

STEERING CONTROL SYSTEM

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

2

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

2

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

2

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

3

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

3

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

3

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

3

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

4

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

5

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

6

POWER SUPPLY AND GROUND CIRCUIT .......

6

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

6

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

6

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

8

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

8

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

8

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

10

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

10

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

10

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

13

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

13

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

13

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

15

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

15

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

15

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

16

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

19

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

21

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

21

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

21

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

21

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

22

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

22

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

22

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

22

REMOVAL AND INSTALLATION ...............

23

EPS CONTROL UNIT  .......................................

23

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

23

STC-2

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000004205823

DETAILED FLOW

1.

COLLECT THE INFORMATION FROM THE CUSTOMER

It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and

understand them fully. Ask customer about his/her complaints carefully. In some cases, it will be necessary to

check symptoms by driving vehicle with customer.

>> GO TO 2.

2.

BASIC INSPECTION

1. Check the power steering fluid leakage and the power steering fluid level. Refer to 

ST-8, "Inspection"

.

2. Check the drive belt tension. Refer to 

EM-16, "Checking Drive Belts"

 (QR25DE), 

EM-121, "Checking

Drive Belts"

 (VQ35DE).

3. Check the power steering gear for damages, cracks and oil leakage. Refer to 

ST-8, "Inspection"

.

4. Check the relief oil pressure. Refer to 

ST-12, "Inspection"

.

>> GO TO 3.

3.

TROUBLE DIAGNOSIS FOR SYMPTOM

Perform the diagnosis by symptom. Refer to 

STC-21, "Description"

.

>> GO TO 4.

4.

FINAL CHECK

Check the input/output standard values for the power steering control unit.
Are the power steering control unit input/output values within standard ranges respectively?

YES

>> Inspection End

NO

>> GO TO 2.

 

 

 

 

 

 

 

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