NISSAN NOTE 2016 Service Repair Manual

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
Revision: August 2015
2016 Versa Note

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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
Revision: August 2015
2016 Versa Note

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EPS WARNING LAMPSTC-29
< DTC/CIRCUIT DIAGNOSIS >
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EPS WARNING LAMP
Component Function CheckINFOID:0000000012431971
1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when igni tion switch turns ON. Then, EPS warning lamp turns
OFF after the engine is started.
Is the inspection result normal?
YES >> Inspection End.
NO >> Perform trouble diagnosis. Refer to STC-29, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000012431972
1.PERFORM SELF DIAGNOSTIC RESULT
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-10, "DTC Index".
NO >> GO TO 2.
2.CHECK EPS WARNING LAMP SIGNAL
With CONSULT
1. Turn the ignition switch ON.
CAUTION:
Never start the engine.
2. Select “Data Monitor” of “ EPS” and select “WARNING LAMP”.
3. Check that the EPS warning lamp is turned ON.
4. Start the engine. CAUTION:
Never drive the vehicle.
5. Check that the EPS warning lamp is turned OFF.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for combination meter power supply circuit. Refer to MWI-43,
"COMBINATION METER : Diagnosis Procedure" (Type A) or MWI-98, "COMBINATION METER :
Diagnosis Procedure" (Type B).
NO >> Replace the EPS control unit. Refer to STC-37, "
Removal and Installation".
Revision: August 2015 2016 Versa Note

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STC-30
< SYMPTOM DIAGNOSIS >
EPS WARNING LAMP DOES NOT TURN ON
SYMPTOM DIAGNOSIS
EPS WARNING LAMP DOES NOT TURN ON
DescriptionINFOID:0000000012431973
EPS warning lamp does not turn ON when turning ignition switch ON from OFF. (Check the illumination of the
EPS warning lamp.)
Diagnosis ProcedureINFOID:0000000012431974
1.CHECK EPS WARNING LAMP
Perform the trouble diagnosis of EPS warning lamp. Refer to STC-29, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Check that there is no malfunction in eac h harness connector pin terminal or disconnection.
NO >> Repair or replace the specific malfunctioning part.
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EPS WARNING LAMP DOES NOT TURN OFFSTC-31
< SYMPTOM DIAGNOSIS >
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EPS WARNING LAMP DOES NOT TURN OFF
DescriptionINFOID:0000000012431975
EPS warning lamp does not turn OFF several seconds after engine started.
Diagnosis ProcedureINFOID:0000000012431976
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-10, "DTC Index".
NO >> GO TO 2.
2.CHECK EPS WARNING LAMP
Perform the trouble diagnosis of EPS warning lamp. Refer to STC-29, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the specific malfunctioning part.
3.CHECK EPS CONTROL UNIT POWE R SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis of EPS cont rol unit power supply and ground. Refer to STC-18, "
Diagnosis Pro-
cedure".
Is the inspection result normal?
YES >> Check that there is no malfunction in eac h harness connector pin terminal or disconnection.
NO >> Repair or replace the specific malfunctioning part.
Revision: August 2015 2016 Versa Note

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STC-32
< SYMPTOM DIAGNOSIS >
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
DescriptionINFOID:0000000012431977
Steering wheel turning force is heavy or light.
Diagnosis ProcedureINFOID:0000000012431978
1.PERFORM SELF DIAGNOSTIC RESULT
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-10, "DTC Index".
NO >> GO TO 2.
2.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when igni tion switch turns ON. Then, EPS warning lamp turns
OFF after the engine is started.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis of EPS warning lamp. Refer to STC-29, "
Diagnosis Procedure".
3.CHECK EPS CONTROL UNIT SIGNAL (1)
With CONSULT
1. Start the engine. CAUTION:
Never drive the vehicle.
2. Select “ASSIST LEVEL” in “Data Monitor” of “EPS”.
Does the item in
“Data Monitor” indicate 100%?
YES >> GO TO 6.
NO >> GO TO 4.
4.CHECK EPS CONTROL UNIT SIGNAL (2)
With CONSULT
Select “BATTERY VOLT” in “Data Monitor” of “EPS”.
Does the item in
“Data Monitor” indicate 10 V or more?
YES >> GO TO 5.
NO >> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to STC-18, "
Diag-
nosis Procedure".
5.CHECK EPS CONTROL UNIT SIGNAL (3)
With CONSULT
1. Select “ASSIST LEVEL” in “Data Monitor” of “EPS”.
2. Stop the EPS system until the item in “Data Monitor” becomes “100%”.
NOTE:
While stopping the EPS system, do not turn steering wheel.
3. Check that the symptom continues.
Does the symptom continue?
YES >> GO TO 6.
NO >> The assist torque decreases because of protection function. This is not malfunction. Inspection End.
6.CHECK EPS CONTROL UNIT SIGNAL (4)
With CONSULT
1. Start the engine. CAUTION:
Revision: August 2015 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)
Revision: August 2015 2016 Versa Note

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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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UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
STC-35
< SYMPTOM DIAGNOSIS >
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UNBALANCE STEERING WHEEL TU RNING FORCE (TORQUE VARIA-
TION)
DescriptionINFOID:0000000012431981
Unbalance steering wheel turning force (torque variation).
Diagnosis ProcedureINFOID:0000000012431982
1.PERFORM SELF DIAGNOSTIC RESULT
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “Self Diagnostic Result” of “EPS”.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-10, "DTC Index".
NO >> GO TO 2.
2.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check the EPS warning lamp while the engine is started.
Does the EPS warning lamp turn OFF?
YES >> GO TO 3.
NO >> Refer to STC-29, "
Diagnosis Procedure".
3.CHECK STEERING COLU MN AND STEERING GEAR
Check the steering column assembly and steering gear assembly.
• Steering column assembly. Refer to ST-9, "
Exploded View".
• Steering gear assembly. Refer to ST-14, "
Exploded View".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the specific malfunctioning part.
4.CHECK EPS CONTROL UNIT SIGNAL (1)
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 “ASSIST LEVEL” in “Data Monitor” of “EPS”.
Does the item in
“Data Monitor” maintain “100%”?
YES >> GO TO 7.
NO >> GO TO 5.
5.CHECK EPS CONTROL UNIT SIGNAL (2)
With CONSULT
Select “BATTERY VOLT” in “Data Monitor” of “EPS”.
Does the item in
“Data Monitor” indicate 10 V or more?
YES >> GO TO 6.
NO >> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to STC-18, "
Diag-
nosis Procedure".
6.CHECK EPS CONTROL UNIT SIGNAL (3)
With CONSULT
1. Select “ASSIST LEVEL” in “Data Monitor” of “EPS”.
2. Stop the EPS system until the item in “Data Monitor” becomes “100%”. NOTE:
While stopping the EPS system, do not turn steering wheel.
3. Check that the symptom continues.
Revision: August 2015 2016 Versa Note

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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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