2016 NISSAN NOTE steering

C1606 EPS MOTORSTC-23
< DTC/CIRCUIT DIAGNOSIS >
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C1606 EPS MOTOR
DTC LogicINFOID:0000000012431957
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
“C1606” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-23, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000012431958
1.CHECK EPS MOTOR
Check the EPS motor. Refer to STC-23, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> EPS motor is malfunction. Replace steering column assembly. Refer to ST-9, "
Exploded View".
2.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect EPS motor harness connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
Is the inspection result normal?
YES >> Replace EPS control unit. Refer to STC-37, "Removal and Installation".
NO >> Repair or replace malfunctioning component.
Component Inspection INFOID:0000000012431959
1.CHECK EPS MOTOR
1. Turn the ignition switch OFF.
2. Disconnect EPS motor harness connector.
3. Check resistance between EPS motor connector terminals.
Is the inspection result normal?
DTC Display item Malfunction detected condition Possible cause
C1606 EPS MOTOR When the motor driver malfunction of EPS control
unit or EPS motor malfunction is detected. • Harness or connector
• EPS motor
• EPS control unit
EPS motor
Resistance (Approx.)
Te r m i n a l
19 200.1 Ω or less
Revision: August 2015 2016 Versa Note

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STC-24
< DTC/CIRCUIT DIAGNOSIS >
C1606 EPS MOTOR
YES >> Inspection End.
NO >> EPS motor is malfunctioning. Replace steering column assembly. Refer to ST-9, "
Removal and
Installation".
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)
Revision: August 2015 2016 Versa Note

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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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EPS CONTROL UNITSTC-37
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
EPS CONTROL UNIT
Exploded ViewINFOID:0000000012431983
Removal and InstallationINFOID:0000000012431984
CAUTION:
• Do not shock EPS control unit, e.g. drop or hit.
• Do not allow EPS control unit to get wet with wate r, moisture or any other liquid. Also, protect the
EPS control unit from extreme temperatures.
• Do not disassemble or remodel EPS control unit, EPS motor, torque sensor, harness and connec-
tors.
REMOVAL
1. Perform a CPU memory erase on t he EPS with CONSULT before removal.
2. Disconnect the battery cable from the negative terminal. Refer to PG-70, "
Removal and Installation (Bat-
tery)"
3. Remove instrument lower panel (LH). Refer to IP-24, "Removal and Installation".
4. Disconnect harness connectors from EPS control unit. CAUTION:
Hold and pull the connector housing, do not pull on harness when disconnecting connectors.
Also, do not grip, collapse or ap ply excessive force to the connector.
5. Remove screws and EPS control unit from steering column.
6. Remove bolts and bracket plate from steering column (if necessary).
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Check that the harness connector, terminals and the EPS control unit are not visibly damaged before
installing the EPS control unit.
• Check that the harness connector, te rminals and the EPS control unit are free of foreign materials
before installing.
• Replace the EPS control unit if it has been dropped or sustained an impact.
After installing steering column, perform self-diagnosis with CONSULT to ensure correct operation. Refer to
STC-6, "
CONSULT Function".
1. Steering column 2. Bracket plate3. EPS control unit
Front
AWGIA0295ZZ
Revision: August 2015 2016 Versa Note

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