2007 NISSAN TIIDA Service Repair Manual

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Page 4873 of 5883

NISSAN TIIDA 2007 Service Repair Manual ST-18
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Steering WheelINFOID:0000000001282491
S

Page 4874 of 5883

NISSAN TIIDA 2007 Service Repair Manual SERVICE DATA AND SPECIFICATIONS (SDS)
ST-19
< SERVICE DATA AND SPECIFICATIONS (SDS)
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Steering Outer Socket and Inner SocketINFOID:0000000001282494
Steering GearINFOID:0

Page 4875 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-1
STEERING
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SECTION STC
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CONTENTS
STEERING CONTROL SYSTEM
EPS
BASIC INSPECTION ....................................
3
DIAGNOSIS AND REPAIR WORKFLOW ..........3
Wo

STC-1
STEERING
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SECTION STC
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CONTENTS
STEERING CONTROL SYSTEM
EPS
BASIC INSPECTION ....................................
3
DIAGNOSIS AND REPAIR WORKFLOW ..........3
Work Flow .................................................................3
FUNCTION DIAGNOSIS ...............................4
EPS SYSTEM ......................................................4
System Diagram ........................................................4
System Description ...................................................4
Component Parts Location ........................................5
Component Description .............................................6
CAN Communication .................................................6
DIAGNOSIS SYSTEM (EPS CONTROL UNIT)
.....
7
CONSULT-III Function (EPS) ...................................7
COMPONENT DIAGNOSIS ..........................9
C1601 BATTERY POWER SUPPLY ..................9
Description ................................................................9
DTC Logic .................................................................9
Diagnosis Procedure .................................................9
Special Repair Requirement (Models with ESP) .....10
C1604 TORQUE SENSOR .................................11
Description ..............................................................11
DTC Logic ...............................................................11
Diagnosis Procedure ...............................................11
Special Repair Requirement (Models with ESP) .....12
C1606 EPS MOTOR ...........................................13
Description ..............................................................13
DTC Logic ...............................................................13
Diagnosis Procedure ...............................................13
Special Repair Requirement (Models with ESP) .....14
C1607 EEPROM .................................................15
Description ..............................................................15
DTC Logic ................................................................15
Diagnosis Procedure ...............................................15
Special Repair Requirement (Models with ESP) .....15
C1608 EPS CONTROL UNIT ............................16
Description ...............................................................16
DTC Logic ................................................................16
Diagnosis Procedure ...............................................16
Special Repair Requirement (Models with ESP) .....16
C1609 CAN VHCL SPEED ...............................17
Description ...............................................................17
DTC Logic ................................................................17
Diagnosis Procedure ...............................................17
Special Repair Requirement (Models with ESP) .....18
C1610 CAN ENG RPM ......................................19
Description ...............................................................19
DTC Logic ................................................................19
Diagnosis Procedure ...............................................19
Special Repair Requirement (Models with ESP) .....19
U1000 CAN COMM CIRCUIT ...........................21
Description ...............................................................21
DTC Logic ................................................................21
Diagnosis Procedure ...............................................21
Special Repair Requirement (Models with ESP) .....21
ECU DIAGNOSIS .........................................22
EPS CONTROL UNIT .......................................22
EPS Control Unit Input/Output Signal Reference
Value .......................................................................
22
Wiring Diagram - EPS - ...........................................24
Fail-Safe Function ...................................................27
DTC Index ...............................................................28
SYMPTOM DIAGNOSIS ..............................29
EPS SYSTEM SYMPTOMS ..............................29
Symptom Chart ........................................................29

Page 4876 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-2
EPS WARNING LAMP DOES NOT TURN ON ...30
Diagnosis Procedure ..............................................30
EPS WARNING LAMP DOES NOT TURN
OFF ................................................

Page 4877 of 5883

NISSAN TIIDA 2007 Service Repair Manual DIAGNOSIS AND REPAIR WORKFLOW
STC-3
< BASIC INSPECTION >[EPS]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000001716715
DETAIED FLOW
1.COLLECT TH

Page 4878 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-4
< FUNCTION DIAGNOSIS >[EPS]
EPS SYSTEM
FUNCTION DIAGNOSIS
EPS SYSTEM
System DiagramINFOID:0000000001697715
System DescriptionINFOID:0000000001697714
EPS CONTROL UNIT
• EPS control unit perform

Page 4879 of 5883

NISSAN TIIDA 2007 Service Repair Manual EPS SYSTEM
STC-5
< FUNCTION DIAGNOSIS >[EPS]
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Component Parts LocationINFOID:0000000001697719
EPS system malfunctionON
Other than above (system normal) OFFCondition EPS

Page 4880 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-6
< FUNCTION DIAGNOSIS >[EPS]
EPS SYSTEM
Component Description
INFOID:0000000001716729
CAN CommunicationINFOID:0000000001697716
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial commun

STC-6
< FUNCTION DIAGNOSIS >[EPS]
EPS SYSTEM
Component Description
INFOID:0000000001716729
CAN CommunicationINFOID:0000000001697716
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
For details, refer to LAN-30, "
CAN System Specification Chart".
Component parts Function
EPS control unit
(Electric power steering control unit) Outputs optimum assist torque signal to EPS motor.
Reduces output signals to EPS motor and protects EPS motor and EPS control unit when us-
ing power steering continuously and excessively.
As a fail-safe function, turned off output signal to EPS motor and then enters a manual steer-
ing state, if malfunction is detected in EPS system.
EPS motor Products assist torque by control signal from EPS control unit.
Torque sensor Detects steering wheel turning force and outputs sensor signal to EPS control unit.
Reduction gear Increases motor-produced assist torque by worm gear and transmits it to column shaft.
EPS warning lamp Illuminates if malfunction is detected in electrical system of EPS system.
ECMTransmits the following signals via CAN communication to EPS control unit.
Engine status signal
ABS actuator and electric unit (con-
trol unit)Transmits the following signals via CAN communication to EPS control unit.
Vehicle speed signal
Combination meterTransmits the following signals via CAN communication to EPS control unit.
Vehicle speed signal

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