Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 2007 STC
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STEERING
A
SECTION
STEERING CONTROL SYSTEM
STC B
C
D
E
CONTENTS
BASIC INSPECTION ................................... 2
. VEHICLE SPEED SIGNAL CIRCUIT ................ 11 F
Description ..............................................................11
.
DIAGNOSIS AND REPAIR WORKFLOW ......... 2
. Diagnosis Procedure ..............................................11 .
Work Flow ................................................................ 2
. STC
ECU DIAGNOSIS ........................................ 13
.
FUNCTION DIAGNOSIS .............................. 3
.
POWER STEERING CONTROL UNIT .............. 13
EPS SYSTEM ..................................................... 3
. Reference Value .....................................................13. H
System Diagram ....................................................... 3
. Wiring Diagram -- ELECTRONICALLY CON-
System Description .................................................. 3
. TROLLED POWER STEERING SYSTEM -- .........14 .
Component Parts Location ....................................... 4
. Fail Safe .................................................................17
. I
Component Description ............................................ 4
.
SYMPTOM DIAGNOSIS ............................. 19
.
COMPONENT DIAGNOSIS ......................... 5
.
UNBALANCE STEERING WHEEL TURNING J
POWER SUPPLY AND GROUND CIRCUIT ...... 5
. FORCE (TORQUE VARIATION) ....................... 19
Description ............................................................... 5
. Description ..............................................................19
.
Diagnosis Procedure ................................................ 5
. Diagnosis Procedure ..............................................19 . K
POWER STEERING SOLENOID VALVE .......... 6
. PRECAUTION ............................................. 20
.
Description ............................................................... 6
.
Diagnosis Procedure ................................................ 6
. PRECAUTIONS ................................................. 20 L
Component Inspection ............................................. 7 . Precautions for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
ENGINE SPEED SIGNAL CIRCUIT ................... 8
. SIONER" ................................................................20
. M
Description ............................................................... 8
. Precautions Necessary for Steering Wheel Rota-
Diagnosis Procedure ................................................ 8
. tion after Battery Disconnect ..................................20 .
N
O
P
Revision: October 2006 STC-1 2007 Altima
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000000992774
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-124, "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-19, "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..
Revision: October 2006 STC-2 2007 Altima
EPS SYSTEM
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS A
EPS SYSTEM
System Diagram INFOID:0000000000992775
B
CONTROL DIAGRAM
C
D
E
F
STC
H
JSGIA0119GB
System Description INFOID:0000000000992776
I
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