2007 NISSAN TIIDA Service Repair Manual

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Page 4889 of 5883

NISSAN TIIDA 2007 Service Repair Manual C1607 EEPROM
STC-15
< COMPONENT DIAGNOSIS >[EPS]
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C1607 EEPROM
DescriptionINFOID:0000000001716742
EPS control unit incorporates a memory function.
DTC LogicINFOID:00000

Page 4890 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-16
< COMPONENT DIAGNOSIS >[EPS]
C1608 EPS CONTROL UNIT
C1608 EPS CONTROL UNIT
DescriptionINFOID:0000000001716745
EPS control unit performs an arithmetical operation on data, such as steering wheel

Page 4891 of 5883

NISSAN TIIDA 2007 Service Repair Manual C1609 CAN VHCL SPEED
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C1609 CAN VHCL SPEED
DescriptionINFOID:0000000001716755
EPS control unit receives vehicle speed input from the

C1609 CAN VHCL SPEED
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C1609 CAN VHCL SPEED
DescriptionINFOID:0000000001716755
EPS control unit receives vehicle speed input from the combination meter and ABS actuator and electric unit
(control unit) through the CAN communication lines.
DTC LogicINFOID:0000000001716756
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to STC-17, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001697729
1.CHECK DTC WITH COMBINATION METER
Perform self-diagnosis with combination meter. Refer to MWI-22, "
CONSULT-III Function (METER/M&A)".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to BRC-25, "
CONSULT-III
Function (ABS)" (with ABS) or BRC-105, "CONSULT-III Function (ABS)" (with ESP).
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-22, "
EPS Control Unit Input/Output Signal Reference
Va l u e".
OK or NG
OK >> GO TO 4.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
4.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Perform self-diagnosis with ABS actuator and electric unit (control unit) and combination meter.
Refer to BRC-25, "
CONSULT-III Function (ABS)" (with ABS), BRC-105, "CONSULT-III Function
(ABS)" (with ESP) or MWI-22, "CONSULT-III Function (METER/M&A)".
DTC Display item Malfunction detected condition Possible cause
C1609 CAN VHCL SPEEDWhen the malfunction is detected in vehicle speed
signal received with CAN communication. Harness or connector
CAN communication line
EPS control unit
Self-diagnosis results
CAN VHCL SPEED

Page 4892 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-18
< COMPONENT DIAGNOSIS >[EPS]
C1609 CAN VHCL SPEED
Special Repair Requirement (Models with ESP)
INFOID:0000000001730968
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the

Page 4893 of 5883

NISSAN TIIDA 2007 Service Repair Manual C1610 CAN ENG RPM
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C1610 CAN ENG RPM
DescriptionINFOID:0000000001716753
EPS control unit receives engine RPM input from the ECM thro

C1610 CAN ENG RPM
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C1610 CAN ENG RPM
DescriptionINFOID:0000000001716753
EPS control unit receives engine RPM input from the ECM through the CAN communication lines.
DTC LogicINFOID:0000000001716754
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to STC-19, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001697730
1.CHECK DTC WITH ECM
Perform self-diagnosis for ECM. Refer to EC-107, "
CONSULT-III Function" (HR16DE with EURO-OBD), EC-
462, "CONSULT-III Function" (HR16DE without EURO-OBD), EC-772, "CONSULT-III Function" (MR18DE),
EC-1104, "
Diagnosis Description" (K9K).
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-22, "
EPS Control Unit Input/Output Signal Reference
Va l u e".
OK or NG
OK >> GO TO 3.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
3.CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Perform self-diagnosis for ECM. Refer to EC-107, "
CONSULT-III Function" (HR16DE with EURO-
OBD), EC-462, "
CONSULT-III Function" (HR16DE without EURO-OBD), EC-772, "CONSULT-III
Function" (MR18DE), EC-1104, "Diagnosis Description" (K9K).
Special Repair Requirement (Models with ESP)INFOID:0000000001730969
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
DTC Display item Malfunction detected condition Possible cause
C1610 CAN ENG RPMWhen the malfunction is detected in engine status
signal received with CAN communication. Harness or connector
CAN communication line
EPS control unit
Self-diagnosis results
CAN ENG RPM

Page 4894 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-20
< COMPONENT DIAGNOSIS >[EPS]
C1610 CAN ENG RPM
Always perform the neutral position adjustment for the steering angle sensor, when replacing the EPS control
unit. Refer to BRC-90, "
ADJUSTMENT O

Page 4895 of 5883

NISSAN TIIDA 2007 Service Repair Manual U1000 CAN COMM CIRCUIT
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000001716748
CAN (Controller Area Network) is a serial communic

U1000 CAN COMM CIRCUIT
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U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000001716748
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.
DTC LogicINFOID:0000000001716749
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to STC-21, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001697731
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III
1. Turn ignition switch ON and start engine.
2. Select “SELF-DIAG RESULTS” mode for “EPS” with CONSULT-III.
3. Perform the self-diagnosis.
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Print out CONSULT-II screen and go to LAN-30, "CAN System Specification Chart".
NO >>INSPECTION END
Special Repair Requirement (Models with ESP)INFOID:0000000001730970
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the EPS control
unit. Refer to BRC-90, "
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Descrip-
tion".
>> END
DTC Display item Malfunction detected condition Possible cause
U1000 CAN COMM CIRCUITWhen EPS control unit is not transmitting or receiving
CAN communication signal for 2 seconds or more. Harness or connector
CAN communication line
EPS control unit
Self-diagnosis results
CAN COMM CIRCUIT

Page 4896 of 5883

NISSAN TIIDA 2007 Service Repair Manual STC-22
< ECU DIAGNOSIS >[EPS]
EPS CONTROL UNIT
ECU DIAGNOSIS
EPS CONTROL UNIT
EPS Control Unit Input/Output Signal Reference ValueINFOID:0000000001716757
SPECIFICATIONS WITH CONSULT-III
CAUTION:
The o

STC-22
< ECU DIAGNOSIS >[EPS]
EPS CONTROL UNIT
ECU DIAGNOSIS
EPS CONTROL UNIT
EPS Control Unit Input/Output Signal Reference ValueINFOID:0000000001716757
SPECIFICATIONS WITH CONSULT-III
CAUTION:
The output signal indicates the EPS control unit calculation date. The normal values will be displayed
even in the event that the output circuit (harness) is open.
*1: In the front of the value, “L” is displayed at steering left and “R” is displayed at steering right.
*2: Almost in accordance with the value of “MOTOR SIG”. It is not a malfunction though these values are not accorded when steering
quickly.
*3: It is not a malfunction, though it might not be corresponding just after ignition switch is turned ON.
*4: It turns to OFF after waiting for a short period of time.Monitor item (Unit) Content Condition Display value
MOTOR VOL (V)Power supply voltage for
EPS control unitIgnition switch: ON Battery voltage
TORQUE SENSOR (Nm)Steering wheel turning
forceEngine runningSteering wheel: Not
steering (There is no
steering force) 0.00 Nm
Steering wheel: Steer-
ing0 – 8.19 Nm
*1 (The value
is changed according to
steering left or right)
MOTOR SIG (A)Command current to EPS
motorEngine runningSteering wheel: Not
steering (There is no
steering force)0.00 A
Steering wheel: Steer-
ing0 – 65.00 A (The value is
changed according to
steering left or right)
MOTOR CURRENT (A)Consumption current of
EPS motorEngine runningSteering wheel: Not
steering (There is no
steering force)0.00 A
Steering wheel: Steer-
ing0 – 65.00 A
*2 (The value
is changed according to
steering left or right)
VEHICLE SPEED (km/h) or (mph) Vehicle speedVehicle stopped 0 km/h (0 mph)
While drivingApproximately equal to
the indication on speed-
ometer (Inside of ±10%)
*3
WARNING LAMP (ON/OFF)EPS warning lamp condi-
tionEPS warning lamp: ON ON
EPS warning lamp: OFF OFF
DERATING STAT (ON/OFF) Protect overload status Engine runningSteering wheel: Nor-
mal steeringOFF
Steering wheel: Steer-
ing over the stopON
*4
ENGINE STATUS (RUN/STOP) Engine statusEngine stopped
(Engine speed: Less than 400 rpm)STOP
Engine running
(Engine speed: 400 rpm or more)RUN

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