torque NISSAN VERSA 2006 Workshop Service Repair Manual

TROUBLE DIAGNOSIS FOR SYSTEM
STC-19
[EPS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: June 20062007 Versa
DTC C1604 TORQUE SENSORUGS0008K
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
*: In the front of the value, “L” is displayed at steering left and “R” is displayed at steering right.
EPS CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
DIAGNOSTIC PROCEDURE
1. CHECK TORQUE SENSOR SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “EPS” with CONSULT-II.
3. Check the value of “TORQUE SENSOR”. Refer to STC-11, "
SPECIFICATIONS WITH CONSULT-II" .
Without CONSULT-II
1. Start engine.
2. Check voltage between EPS control unit harness connector M53 terminals 4, 5, 6, 7 and ground. Refer to
STC-12, "
SPECIFICATIONS BETWEEN EPS CONTROL UNIT TERMINALS" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
Monitor item (Unit) Content Condition Display value
TORQUE SENSOR (Nm) Steering wheel turning force Engine runningSteering wheel: Not steering
(There is no steering force)0.00 Nm
Steering wheel: Steering0 – 8.19 Nm*
(The value is changed
according to steering
left or right)
TerminalWire
color Item Condition Data (Approx.)
4 V Torque sensor sub Engine runningSteering wheel: Not steering
(There is no steering force)2.5 V
Steering wheel: Steering1.7 V – 3.3 V
(The value is
changed accord-
ing to steering
left or right)
5 BR Torque sensor power supplyIgnition switch: ON 8 V
Ignition switch: OFF 0 V
6 G Torque sensor main Engine runningSteering wheel: Not steering
(There is no steering force)2.5 V
Steering wheel: Steering1.7 V – 3.3 V
(The value is
changed accord-
ing to steering
left or right)
7 R Torque sensor ground Always 0 V

STC-20
[EPS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: June 20062007 Versa
2. CHECK HARNESS AND CONNECTOR
1. Turn ignition switch “OFF”.
2. Disconnect EPS control unit harness connector and torque sensor harness connector.
3. Check continuity between EPS control unit harness connector
(A) M53 terminals 4, 5, 6, 7 and torque sensor harness connec-
tor (B) M63 terminals 1, 2, 3, 4.
Also check harness for short to ground and short to power.
4. Connect EPS control unit harness connector and torque sensor harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-11, "
EPS Control Unit Input/Output Signal Reference
Values" .
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 >> Torque sensor is malfunctioning. Replace steering column assembly. Refer to PS-9, "
Removal
and Installation" .
Terminal Continuity
4 – 3
Ye s 5 – 2
6 – 1
7 – 4
SGIA1629E

STC-32
[EPS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: June 20062007 Versa
Unbalance Steering Wheel Turning Force (Torque Variation)UGS0008W
SYMPTOM:
Unbalance steering wheel turning force, while driving (Torque variation).
DIAGNOSTIC PROCEDURE
1. CHECK EPS WARNING LAMP
Confirm EPS warning lamp during engine running.
Does EPS warning lamp turn OFF?
YES >> GO TO 2.
NO >> Go to STC-27, "
EPS Warning Lamp Does Not Turn OFF" .
2. CHECK STEERING COLUMN INTERMEDIATE SHAFT
Check the connection between intermediate shaft and the mounting part of steering column assembly and
steering gear assembly. Refer to PS-9, "
COMPONENT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-11, "
EPS Control Unit Input/Output Signal Reference
Values" .
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. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Check the steering wheel turning force because there may be mechanical malfunction. Refer to
PS-6, "
CHECKING STEERING WHEEL TURNING FORCE" .

WT-6
ROAD WHEEL TIRE ASSEMBLY
Revision: June 20062007 Versa
ROAD WHEEL TIRE ASSEMBLYPFP:40300
Balancing WheelsEES002D8
Adjust wheel balance using road wheel center.
CAUTION:

Be careful not to scratch the road wheel during removal.

Use clip-on type wheel balance weights only.
Wheel balance (Maximum allowable unbalance):
RotationEES002D9

Follow the maintenance schedule for tire rotation service inter-
vals. Refer to MA-7, "
PERIODIC MAINTENANCE" .

Do not include the T-type spare tire when rotating tires.
CAUTION:

When installing wheels, tighten them diagonally by divid-
ing the work two to three times in order to prevent the
wheels from developing any distortion.

Be careful not to tighten wheel nut at torque exceeding
the specification to prevent damage of disc rotor.
Maximum allowable unbalanceDynamic (At rim flange) Less than 5 g (0.18 oz) (one side)
Static (At rim flange) Less than 10 g (0.35 oz)
Wheel nut : 113 N·m (12 kg-m, 83 ft-lb)SM A82 9C