Display NISSAN NOTE 2016 Service Repair Manual

C1607, C1608 EPS CONTROL UNIT
STC-25
< DTC/CIRCUIT DIAGNOSIS >
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C1607, C1608 EPS CONTROL UNIT
DTC LogicINFOID:0000000012431960
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“C1607” or “C1608” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-25, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000012431961
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Erase “Self Diagnostic Result” of “EPS”.
3. Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“C1607” or “C1608” detected?
YES >> Replace EPS control unit. Refer to STC-37, "Removal and Installation".
NO >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any item are damaged, repair or replace malfunctioning component.
DTC Display item Malfunction detected condition Possible cause
C1607 EEPROM When the memory (EEPROM)
system malfunction is
detected in EPS control unit.
EPS control unit
C1608 CONTROL UNIT When the internal malfunction is detected in EPS
control unit.
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2016 Versa Note

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STC-26
< DTC/CIRCUIT DIAGNOSIS >
C1609 VEHICLE SPEED SIGNAL
C1609 VEHICLE SPEED SIGNAL
DescriptionINFOID:0000000012431962
EPS control unit receives the vehicle speed signal from ABS actuator and electric unit (control unit) via CAN
communication line.
DTC LogicINFOID:0000000012431963
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”
Is DTC
“C1609” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-26, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000012431964
1.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF DIAGNOSTIC RESULT
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES >> Check the DTC.
NO >> GO TO 2.
2.PERFORM SELF DIAGNOSTIC RESULT
With CONSULT
Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“C1609” detected?
YES >> Replace EPS control unit. Refer to STC-37, "Removal and Installation".
NO >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If any item are damaged, repair or replace malfunctioning component.
DTC Display item Malfunction detected condition Possible cause
C1609 CAN VHCL SPEED • Malfunction is detected in vehicle speed signal that
is output from ABS actuator and electric unit (con-
trol unit) via CAN communication.
• ABS actuator and electric unit (control unit) input signal error is detected. • Harness or connector
• CAN communication line
• EPS control unit
• ABS malfunction
- Vehicle speed signal error
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C1610 ENGINE STATUS SIGNALSTC-27
< DTC/CIRCUIT DIAGNOSIS >
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C1610 ENGINE STATUS SIGNAL
DescriptionINFOID:0000000012431965
EPS control unit receives the engine status signal from ECM via CAN communication line.
DTC LogicINFOID:0000000012431966
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“C1610” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-27, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000012431967
1.PERFORM ECM SELF DIAGNOSTIC RESULT
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “ENGINE”. Refer to EC-60, "
CONSULT Function".
Is any DTC detected?
YES >> Check the DTC. Refer to EC-87, "DTCIndex".
NO >> GO TO 2.
2.PERFORM SELF DIAGNOSTIC RESULT
With CONSULT
Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“C1610” detected?
YES >> Replace EPS control unit. Refer to STC-37, "Removal and Installation".
NO >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any item are damaged, repair or replace malfunctioning components.
DTC Display item Malfunction detected condition Possible cause
C1610 CAN ENG RPM • Malfunction is detected in engine status signal
that is output from ECM via CAN communica-
tion.
• ECM input signal error is detected. • Harness or connector
• CAN communication line
• EPS control unit
•ECM
- Engine status signal error
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STC-28
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000012431968
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 CA N 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 communicate data but selectively reads required data only.
DTC LogicINFOID:0000000012431969
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is DTC
“U1000” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-28, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000012431970
Proceed to LAN-16, "Trouble Diagnosis Flow Chart".
DTC Display item Malfunction detected condition Possible cause
U1000 CAN COMM CIRCUIT EPS control unit is not transmitting/re-
ceiving CAN communication signal for 2
seconds or more.• CAN communication error
• EPS control unit
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2016 Versa Note

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STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHTSTC-33
< SYMPTOM DIAGNOSIS >
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Never drive the vehicle.
2. Turn steering wheel from full left stop to full right stop.
3. Select “TORQUE SENSOR” in “Data Monitor” of “EPS”.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.CHECK EPS MOTOR
Perform the trouble diagnosis of EPS motor. Refer to STC-23, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace the specific malfunctioning part.
8.CHECK STEERING WH EEL TURNING FORCE
Check the steering wheel turning force. Refer to ST-19, "
Steering Wheel Turning Force".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning forc e for mechanical malfunction. Refer to ST-19, "
Steering
Wheel Turning Force".
Monitor item ConditionDisplay value
TORQUE SENSOR Steering wheel: Not steering (There is no
steering force)
Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
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STC-34
< SYMPTOM DIAGNOSIS >
UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BETWEEN RIGHT AND LEFT
UNBALANCE STEERING WHEEL TU RNING FORCE AND RETURN BE-
TWEEN RIGHT AND LEFT
DescriptionINFOID:0000000012431979
Unbalance steering wheel turning force and return between right and left.
Diagnosis ProcedureINFOID:0000000012431980
1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check the EPS warning lamp while engine is running.
Does the EPS warning lamp turn OFF?
YES >> GO TO 2.
NO >> Refer to STC-29, "
Diagnosis Procedure".
2.CHECK WHEEL ALIGNMENT
1. Check the wheel alignment. Refer to FSU-7, "
Inspection".
2. Perform “Self Diagnostic Result” of “EPS”.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjustment of wheel alignment. Refer to FSU-8, "
Adjustment".
3.CHECK EPS CONTROL UNIT SIGNAL
With CONSULT
1. Start the engine.
CAUTION:
Never drive the vehicle.
2. Turn steering wheel from full left stop to full right stop.
3. Select “Data Monitor” of “EPS” and select “TORQUE SENSOR”.
4. Perform the torque sensor inspection.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK EPS MOTOR
Perform the trouble diagnosis of EPS motor. Refer to STC-23, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the specific malfunctioning part.
5.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to ST-19, "
Steering Wheel Turning Force".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-19, "
Steering
Wheel Turning Force".
Monitor item ConditionDisplay value
TORQUE SENSOR Steering wheel: Not st
eering (There is no
steering force) Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
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STC-36
< SYMPTOM DIAGNOSIS >
UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
Does the symptom continue?
YES >> GO TO 7.
NO >> The assist torque decreases because of protection function. This is not malfunction. Inspection
End.
7.CHECK EPS CONTROL UNIT SIGNAL (4)
With CONSULT
1. Start the engine.
CAUTION:
Never drive the vehicle.
2. Turn steering wheel from full left stop to full right stop.
3. Select “TORQUE SENSOR” in “Data Monitor” of “EPS”.
4. Perform the torque sensor inspection.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.CHECK EPS MOTOR
Perform the trouble diagnosis of EPS motor. Refer to STC-23, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace the specific malfunctioning part.
9.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to ST-19, "
Steering Wheel Turning Force".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-19, "
Steering
Wheel Turning Force".
Monitor item ConditionDisplay value
TORQUE SENSOR Steering wheel: Not steering (There is no
steering force)
Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
Revision: August 2015 2016 Versa Note

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TM-56
< PRECAUTION >[CVT: RE0F11A]
PRECAUTIONS
General Precautions
INFOID:0000000012430985
• Turn ignition switch OFF an d disconnect the battery cable
from the negative terminal before connecting or disconnect-
ing the CVT assembly harness connector. Because battery
voltage is applied to TCM even if ignition switch is turned
OFF.
• When connecting or disconnect ing pin connectors into or
from TCM, do not damage pin terminals (bend or break).
Check that there are not any bends or breaks on TCM pin ter-
minal, when connect ing pin connectors.
• Perform TCM input/output si gnal inspection and check
whether TCM functions normally or not before replacing TCM.
Refer to TM-99, "
Reference Value".
• Perform “DTC (Diagnostic Trouble Code) CONFIRMATION
PROCEDURE”.
If the repair is completed DTC should not be displayed in the
“DTC CONFIRMATION PROCEDURE”.
• Always use the specified brand of CVT fluid. Refer to MA-11, "
Fluids and Lubricants".
• Use lint-free paper not cloth rags during work.
• Dispose of the waste oil using the methods prescribed by law, ordinance, etc. after replacing the CVT fluid.
• Before proceeding with disassembly, thoroughly clean the outside of the transaxle. It is important to prevent the internal parts from becoming contami nated by dirt or other foreign matter.
• Disassembly should be done in a clean work area.
SEF289H
AAT470A
MEF040DA
JSBIA1315ZZ
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TM-68
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
COMPONENT PARTS
TIMING CHART
CVT CONTROL SYSTEM : Sh
ift Position IndicatorINFOID:0000000012431007
TCM transmits shift position signal to combination meter via CAN communication. The actual shift position is
displayed on combination meter according to the signal.
CVT CONTROL SYSTEM : Malfunc tion Indicator Lamp (MIL)INFOID:0000000012431008
The malfunction indicator lamp (MIL) is located on the combination
meter.
The MIL will illuminate when the ignition switch is turned ON without
the engine running. This is a bulb check.
When the engine is started, the MIL should turn off. If the MIL
remains illuminated, the on board diagnostic system has detected an
engine system malfunction.
For details, refer to EC-57, "
DIAGNOSIS DESCRIPTION : Malfunc-
tion Indicator Lamp (MIL)".
SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM : Co mponent Parts LocationINFOID:0000000012431009
JSDIA3607GB
JSBIA1315ZZ
ALDIA0267ZZ
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DIAGNOSIS SYSTEM (TCM)TM-91
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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DIAGNOSIS SYSTEM (TCM)
DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : 1 Tr ip Detection Diagnosis and 2 Trip Detection Diagno-
sis
INFOID:0000000012431028
NOTE:
“Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip.
1 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorize s DTC. In these diagnoses, some illuminate MIL and
some do not. Refer to TM-110, "
DTC Index".
2 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1
trip>
If the same malfunction is detected again in next drivi ng, TCM memorizes DTC. When DTC is memorized, MIL
lights. <2 trip>
“Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.
×: Check possible —: Check not possible
DIAGNOSIS DESCRIPTION : DTC and DTC of 1st TripINFOID:0000000012431029
2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL
• The DTC number of the 1st trip is the same as the DTC number.
• When a malfunction is detected at the 1st trip, TCM memo rizes DTC of the 1st trip. MIL does not light at this
stage. If the same malfunction is not detected at t he 2nd trip (conforming to necessary driving conditions),
DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes
DTC and MIL lights at the same time.
• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the
1st trip does not illuminate MIL, warning for a problem is not given to a driver.
• For procedure to delete DTC and 1st trip DTC from TCM, refer to TM-93, "
CONSULT Function".
• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer to TM-122, "
Flowchart of Trouble Diagnosis".
DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)INFOID:0000000012431030
• TCM not only detects DTC, but also sends the MI L signal to ECM through CAN communication. ECM sends
the MIL signal to the combination meter through CAN communication according to the signal, and illumi-
nates MIL.
• For malfunction indicator lamp (MIL) description, refer to EC-57, "
DIAGNOSIS DESCRIPTION : Malfunction
Indicator Lamp (MIL)".
DIAGNOSIS DESCRIPTION : Counter SystemINFOID:0000000012431031
RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DE-
TECTION DIAGNOSIS THAT ILLUMINATES MIL)
• When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.
• If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.
• Then, MIL goes after driving the vehicle for 3 tr ips under “Driving condition B” without malfunction.
• DTC is displayed until 40 trips of “Driving condition A” are satisfied without detecting the same malfunction.
DTC is erased when 40 trips are satisfied.
Item DTC at the 1st trip
DTCMIL
Display at the 1st trip Display at the
2nd trip Display at the
1st trip Display at the
2nd trip Illumination at
the 1st trip Illumination at
the 2nd trip
1 trip detection diagnosis
(Refer to TM-110, "
DTC Index")——
×— ×—
2 trip detection diagnosis
(Refer to TM-110, "
DTC Index") ×
—— ×— ×
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