2014 NISSAN TEANA power steering

UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
STC-37
< SYMPTOM DIAGNOSIS >
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UNBALANCE STEERING WHEEL TU RNING FORCE (TORQUE VARIA-
TION)
Diagnosis ProcedureINFOID:0000000009460378
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Perform “EPS” self-diagnosis.
Is a malfunctioning system displayed?
YES >> Check malfunctioning system. Refer to STC-13, "DTC Index".
NO >> GO TO 2.
2.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (1)
With CONSULT
1. Start the engine. CAUTION:
Never drive the vehicle.
2. Turn the steering wheel until it stops.
3. Select “MTR ASSIST” in “DATA MONITOR” of “EPS”.
Is the display value
“100%”?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (2)
With CONSULT
1. Select “C/U TEMP” and “C/U TEMP A” in “DATA MONITOR” of “EPS”.
2. Stop the system until the DATA MONITOR display value drops to “90 °C (194 °F)” or less.
3. Check whether symptom continues.
Did symptom continue?
YES >> GO TO 4.
NO >> This occurs because the protection function lowers the assist force. It is not a system malfunction.
Inspection End.
4.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (3)
With CONSULT
1. Turn the steering wheel to the straight -ahead position. (There is no steering force.)
2. Select “BATTERY VOLT” in “DATA MONITOR” of “EPS”.
Is the display value
“10.5 V” or more?
YES >> GO TO 5.
NO >> Check the battery power system. Refer to STC-23, "Diagnosis Procedure"
.
5.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (4)
With CONSULT
Select in “ESTM VHCL SPD” in “DATA MONITOR” of “EPS”.
*: This may not agree with the speedometer indication immediately after the ignition switch is turned ON. This
is not a malfunction.
Is the check result normal?
YES >> GO TO 6.
Monitor item Test condition Display value
ESTM VHCL SPD When stopped 0.00 km/h or mph
While driving Approximately equal to the in-
dication on speedometer
*
(Inside of ±10%)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-38
< SYMPTOM DIAGNOSIS >
UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
NO >> Check the combination meter, ABS actuator and electric unit (control unit). Refer to MWI-18,
"CONSULT Function (METER/M&A)" and BRC-33, "CONSULT Function (ABS)".
6.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (5)
With CONSULT
Select “STR ANG SPD” in “DATA MONITOR” of “EPS”.
Is the check result normal?
YES >> GO TO 7.
NO >> Check the steering angle sensor. Refer to STC-22, "Diagnosis Procedure"
.
7.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (6)
With CONSULT
Select “ENGINE STATUS” in “DATA MONITOR” of “EPS”.
Is the display value
“RUN”?
YES >> GO TO 8.
NO >> Check the ECM. Refer to EC-77, "CONSULT Function"
.
8.CHECK STEERING COLUMN AND STEERING GEAR
Check the steering column assembly and steering gear assembly.
• Steering column assembly. Refer to ST-46, "Steering Column"
.
• Steering gear assembly. Refer to ST-47, "Power Steering Gear"
.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace malfunctioning component.
9.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to STC-34, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to STC-34, "Diagnosis
Procedure".
Monitor item Test condition Display value
STR ANG SPD The steering wheel is not turn-
ing. Approx. 0.0 deg/s
The steering wheel is being
turned. Displays steering angle speed
(deg/s)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

POWER STEERING CONTROL MODULESTC-39
< UNIT REMOVAL AND INSTALLATION >
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UNIT REMOVAL AND INSTALLATION
POWER STEERING CONTROL MODULE
Removal and InstallationINFOID:0000000009460379
CAUTION:
Disconnect battery negative cable before removing the power steering pump assembly.
The power steering control module is an integral part of the power steering pump assembly. If replacement of
the power steering control module is necessary, replac e the complete power steering pump assembly. Refer
to ST-38, "Removal and Installation"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TIRE PRESSURE SENSORWT-59
< UNIT REMOVAL AND INSTALLATION >
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5. Install transmitter (1) to road wheel while pressing at position (A).
CAUTION:
• Check that O-ring contacts horizontally with wheel.
• Check that the base of the valve stem is positioned in the
groove of the metal plate.
6. Install and tighten the valve stem nut to the specified torque. CAUTION:
Do not use power tool for installation.
7. Place wheel on turntable of tire machine. Ensure that transmitter
is 270 degrees from mounting/dismounting head.
NOTE:
Do not touch transmitter with mounting head.
8. Apply a suitable non-silicone lubricant to the tire outside bead. CAUTION:
• Do not use silicone lubricant. Use of silicone lubricant will
deteriorate the tire and wheel.
• Do not allow lubricant to make contact with transmitter.
9. Install the tire outside bead onto the road wheel as normal. NOTE:
If the tire is being reused, align the matching mark applied on
the tire with the position of the road wheel valve st em assembly for the purpose of road wheel and tire bal-
ance adjustment after installation. Ensure that the tire does not rotate relative to road wheel.
10. Install the valve core and inflate tire. CAUTION:
Do not reuse valve core.
11. Install the valve cap. CAUTION:
Do not reuse valve cap.
12. Balance the road wheel and tire assembly. Refer to WT-55, "Adjustment"
.
13. Install wheel and tire assembly in appropriate wheel position on vehicle. Refer to WT-55, "Adjustment"
.
NOTE:
If replacing the transmitter, then transmitter wake up operation must be performed. Refer to WT-25, "Work
Procedure".
14. Adjust neutral position of steering angle sensor. Refer to BRC-58, "Work Procedure"
.
JSEIA0377ZZ
Valve stem nut
tightening torque : 7.7 N·m (0.79 kg-m, 68 in-lb)
WEIA0046E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM