2008 NISSAN TEANA Service Manual

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Page 4441 of 5121

NISSAN TEANA 2008 Service Manual POWER STEERING CONTROL UNIT
STC-13
< ECU DIAGNOSIS >
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ECU DIAGNOSIS
POWER STEERING CONTROL UNIT
Reference ValueINFOID:0000000003893535
TERMINAL LAYOUT
PHYSICAL VALUES
J

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NISSAN TEANA 2008 Service Manual STC-14
< ECU DIAGNOSIS >
POWER STEERING CONTROL UNIT
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to forcibly extend any connector ter-
minals.
Wir

Page 4443 of 5121

NISSAN TEANA 2008 Service Manual POWER STEERING CONTROL UNIT
STC-15
< ECU DIAGNOSIS >
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Fail-SafeINFOID:0000000003893835
EPS system
JCGWM0090GB

Page 4444 of 5121

NISSAN TEANA 2008 Service Manual STC-16
< ECU DIAGNOSIS >
POWER STEERING CONTROL UNIT
EPS system enters the fail-safe mode (that allows the steering
force to be controlled without impairing the drivability) if any of the
input/outp

Page 4445 of 5121

NISSAN TEANA 2008 Service Manual UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
STC-17
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIA-
TION)
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Page 4446 of 5121

NISSAN TEANA 2008 Service Manual STC-18
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003971959
The Supplemental Restraint

STC-18
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003971959
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIRBAG” and
“SEAT BELT” of this Service Manual.
WARNING:
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 NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.
Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
INFOID:0000000003893541
NOTE:
Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-
tion, then disconnect both battery cables.
After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure
below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Carry the Intelligent Key or insert it to the key slot and turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.

Page 4447 of 5121

NISSAN TEANA 2008 Service Manual POWER STEERING CONTROL UNIT
STC-19
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
POWER STEERING CONTROL UNIT
Exploded ViewINFOID:0000000003893542
Removal and InstallationINF

Page 4448 of 5121

NISSAN TEANA 2008 Service Manual STR-1
ENGINE
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SECTION STR
A
STR
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CONTENTS
STARTING SYSTEM
BASIC INSPECTION ....... .............................2
DIAGNOSIS AND REPAIR WORKFLOW ..... .....2
Work Flow .....

STR-1
ENGINE
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SECTION STR
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CONTENTS
STARTING SYSTEM
BASIC INSPECTION ....... .............................2
DIAGNOSIS AND REPAIR WORKFLOW ..... .....2
Work Flow ........................................................... ......2
FUNCTION DIAGNOSIS ...............................5
STARTING SYSTEM ...................................... .....5
VQ25DE ................................................................. ......5
VQ25DE : System Diagram ......................................5
VQ25DE : System Description ..................................5
VQ25DE : Component Parts Location ......................5
VQ25DE : Component Description ...........................6
VQ35DE ................................................................. ......6
VQ35DE : System Diagram ......................................6
VQ35DE : System Description ..................................6
VQ35DE : Component Parts Location ......................7
VQ35DE : Component Description ...........................7
COMPONENT DIAGNOSIS ..........................8
B TERMINAL CIRCUIT .................................. .....8
Description .......................................................... ......8
Diagnosis Procedure .................................................8
S TERMINAL CIRCUIT .......................................9
Description .......................................................... ......9
Diagnosis Procedure .................................................9
STARTING SYSTEM ..........................................10
Wiring Diagram - STARTING SYSTEM - ............ ....10
SYMPTOM DIAGNOSIS ..............................13
STARTING SYSTEM .........................................13
Symptom Table ................................................... ....13
PRECAUTION ..............................................14
PRECAUTIONS .................................................14
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
14
ON-VEHICLE REPAIR .................................15
STARTER MOTOR ...........................................15
VQ25DE ................................................................. ....15
VQ25DE : Exploded View ........................................15
VQ25DE : Removal and Installation ........................16
VQ25DE : Inspection ...............................................16
VQ35DE ................................................................. ....20
VQ35DE : Exploded View ........................................20
VQ35DE : Removal and Installation ........................21
VQ35DE : Inspection ...............................................22
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
26
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
26
Starter Motor ....................................................... ....26

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