ABS NISSAN VERSA 2006 Workshop Service Repair Manual

RSU-8
REAR SUSPENSION ASSEMBLY
Revision: June 20062007 Versa
ComponentsEES002CZ
WAIA0110E
1. Washer (upper) 2. Bushing (upper) 3. Bushing (lower)
4. Washer (lower) 5. Distance tube 6. Bound bumper cover
7. Bound bumper 8. Shock absorber 9. Rear spring rubber seat (upper)
10. Coil spring 11. Rear spring rubber seat (lower) 12. Brake tube protector
13. Rear suspension beam 14. Rear suspension beam bracket

SHOCK ABSORBER
RSU-9
C
D
F
G
H
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K
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MA
B
RSU
Revision: June 20062007 Versa
SHOCK ABSORBERPFP:56210
Removal and InstallationEES002D0
REMOVAL
1. Remove rear tires from vehicle using power tool.
2. Remove wheel sensor from wheel hub and bearing assembly and rear suspension beam. Refer to BRC-
33, "WHEEL SENSORS" .
CAUTION:
Do not pull on wheel sensor harness.
3. Remove shock absorber mask from trunk side finisher using a flat-bladed screwdriver. Refer to EI-42,
"LUGGAGE FLOOR TRIM" .
CAUTION:
Wrap the tip of a screwdriver with cloth to avoid damaging components.
4. Set jack under rear suspension beam.
5. Remove upper nut of the shock absorber, and then remove
washer (upper), bushing (upper) from shock absorber.
6.
Remove shock absorber lower side bolt.
7. Gradually lower the jack, and remove the bushing (lower),
washer (lower), distance tube, bound bumper cover, bound
bumper and shock absorber from vehicle.
INSPECTION AFTER REMOVAL
Shock Absorber
Check the following:

Shock absorber for deformation, cracks or damage, and replace if necessary.

Piston rod for damage, uneven wear or distortion, and replace if necessary .
Bound Bumper and Bushing
Check bound bumper and bushing for cracks, deformation or other damage, and replace applicable parts if
necessary .
SEIA0147J
SEIA0146J

RSU-10
SHOCK ABSORBER
Revision: June 20062007 Versa
INSTALLATION

Installation is in the reverse order of removal. For tightening torque, refer to RSU-8, "Components" .

When installing body side bushing (upper), install the projection
to the body side hole securely.
SEIA0645J

COIL SPRING
RSU-11
C
D
F
G
H
I
J
K
L
MA
B
RSU
Revision: June 20062007 Versa
COIL SPRINGPFP:55020
Removal and InstallationEES002D1
REMOVAL
1. Remove rear tires from vehicle using power tool.
2. Remove wheel sensor from wheel hub and bearing assembly. Refer to BRC-33, "
WHEEL SENSORS" .
CAUTION:
Do not pull on wheel sensor harness.
3. Separate brake tube from wheel cylinder. Refer to BR-11, "
BRAKE TUBE AND HOSE" .
4. Set jack under rear suspension beam.
5. Remove shock absorber lower side bolt. Refer to RSU-9,
"SHOCK ABSORBER" .
6. Gradually lower the jack, and then remove coil spring and rear
spring rubber seat (upper and lower).
INSPECTION AFTER REMOVAL
Check coil spring and spring rubber seat for deformation, cracks, and damage, and replace it if a malfunction
is detected.
INSTALLATION

Installation is in the reverse order of removal. For tightening torque, refer to RSU-8, "Components" .

When installing spring, be sure to securely install the spring end
position aligned to flush of rear spring rubber seat (lower) as
shown.
SEIA0146J
SEIA0149J

SPIRAL CABLE
SRS-45
C
D
E
F
G
I
J
K
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MA
B
SRS
Revision: June 20062007 Versa
5. Disconnect wiper and washer switch connector (1). Then while
pressing tabs (2), pull wiper and washer switch away from spiral
cable to remove.
6. Disconnect lighting and turn signal switch connector (1). Then
while pressing tabs (2), pull lighting and turn signal switch
toward driver door to remove.
7. Remove the screws, then release the tab at the top and pull the
spiral cable away from the steering column assembly.
8. Disconnect spiral cable connectors.
INSTALLATION
Installation is in the reverse order of removal.

Align spiral cable correctly when installing steering wheel, refer
to PS-6, "
STEERING WHEEL" . Make sure spiral cable align-
ment and centering marks (B) are matched and in the neutral
position. The neutral position is detected by turning left 2.6 revo-
lutions from the right end position, ending with the locating pin
(A) at the top. Place steering wheel in straight ahead position,
then install it with the locating pin hole (C) directly over spiral
cable locating pin.

After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to SRS-21, "
SRS Operation
Check" .
WHIA0315E
WHIA0316E
PHIA1024J

STC-6
[EPS]
EPS SYSTEM
Revision: June 20062007 Versa
System DiagramUGS000A6
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationUGS000A7
SYSTEM DESCRIPTION
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 CAN 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 transmits/receives data but selectively reads required data only.
For details, refer to LAN-47, "
CAN System Specification Chart" .
WGIA0187E
Component parts Function
EPS control unit
(Electric power steering control unit)

Outputs optimum assist torque signal to EPS motor.

Reduces output signals to EPS motor and protects EPS motor and EPS control unit when
using power steering continuously and excessively.

As a fail-safe function, turned off output signal to EPS motor and then enters a manual steer-
ing state, if malfunction is detected in EPS system.
EPS motor Products assist torque by control signal from EPS control unit.
Torque sensor Detects steering wheel turning force and outputs sensor signal to EPS control unit.
Reduction gear Increases motor-produced assist torque by worm gear and transmits it to column shaft.
EPS warning lamp Illuminates if malfunction is detected in electrical system of EPS system.
ECMTransmits the following signals via CAN communication to EPS control unit.

Engine status signal
ABS actuator and electric unit (con-
trol unit) (With ABS)Transmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal
Combination meterTransmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal
TCM (Without ABS)Transmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal

TROUBLE DIAGNOSIS FOR SYSTEM
STC-23
[EPS]
C
D
E
F
H
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K
L
MA
B
STC
Revision: June 20062007 Versa
DTC C1609 CAN VHCL SPEEDUGS0008O
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
* : It is not a malfunction, though it might not be corresponding just after ignition switch is turned ON.
DIAGNOSTIC PROCEDURE
1. CHECK DTC WITH COMBINATION METER
Perform self-diagnosis with combination meter. Refer to DI-14, "
SELF-DIAGNOSTIC RESULTS" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO-1 >> With ABS: GO TO 2.
NO-2 >> Without ABS: GO TO 3.
2. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to BRC-20, "
SELF-DIAGNO-
SIS" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 4.
3. CHECK DTC WITH TRANSMISSON CONTROL MODULE (TCM)
Perform self-diagnosis with TCM. Refer to AT-82, "
SELF-DIAGNOSTIC RESULT MODE" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 4.
4. CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-11, "
EPS Control Unit Input/Output Signal Reference
Va lu e s" .
OK or NG
OK >> GO TO 5.
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.
5. CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Perform self-diagnosis with ABS actuator and electric unit (control unit) and combination meter.
Refer to BRC-20, "
SELF-DIAGNOSIS" , DI-14, "SELF-DIAGNOSTIC RESULTS" .
Monitor item (Unit) Content Condition Display value
VEHICLE SPEED (km/h) or (mph) Vehicle speedVehicle stopped 0 km/h (0 mph)
While drivingApproximately equal to the indication on
speedometer (Inside of ±10%)

TROUBLE DIAGNOSIS FOR SYMPTOMS
STC-29
[EPS]
C
D
E
F
H
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K
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MA
B
STC
Revision: June 20062007 Versa
Steering Wheel Turning Force is Heavy or LightUGS0008U
SYMPTOM:
Steering wheel turning force is heavy or light, while driving.
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to STC-13, "
SELF-DIAG RESULTS MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to STC-24, "DTC U1000 CAN
COMM CIRCUIT" .
NO-1 >> With ABS: GO TO 2.
NO-2 >> Without ABS: GO TO 3.
2. CHECK VEHICLE SPEED SIGNAL FROM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to BRC-20, "
SELF-DIAGNO-
SIS" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 4.
3. CHECK VEHICLE SPEED SIGNAL FROM TRANSMISSON CONTROL MODULE (TCM)
Perform self-diagnosis with TCM. Refer to AT-82, "
SELF-DIAGNOSTIC RESULT MODE" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 4.
4. CHECK COMBINATION METER SIGNAL
Perform self-diagnosis with combination meter. Refer to DI-14, "
SELF-DIAGNOSTIC RESULTS" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 5.
5. CHECK ENGINE STATUS SIGNAL
Perform self-diagnosis for ECM. Refer to EC-116, "
SELF-DIAG RESULTS MODE" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 6.
6. CHECK EPS MOTOR SYSTEM
Perform trouble diagnosis for EPS motor. Refer to STC-21, "
DTC C1606 EPS MOTOR" .
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-11, "
EPS Control Unit Input/Output Signal Reference
Va lu e s" .
OK or NG
OK >> GO TO 8.
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.