BRC-110
< COMPONENT DIAGNOSIS >[VDC/TCS/ABS]
C1143 STEERING ANGLE SENSOR
C1143 STEERING ANGLE SENSOR
DescriptionINFOID:0000000003766958
The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel,
and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.
DTC LogicINFOID:0000000003766959
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Turn the ignition switch ON.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC
“C1143” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-110, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003766960
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect steering angle sensor connector.
4. Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK STEERING ANGLE SENSOR HARNESS
1. Turn the ignition switch ON.
CAUTION:
Never start the engine.
2. Check the voltage between steering angle sensor harness connector and ground.
3. Turn the ignition switch OFF.
4. Check the continuity between steering angle sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
DTC Display item Malfunction detected condition Possible cause
C1143 ST ANG SEN CIRCUIT Steering angle sensor is malfunctioning. Harness or connector
Steering angle sensor
ABS actuator and electric unit
(control unit)
Steering angle sensor
—Voltage
Connector Terminal
M30 4 Ground Battery voltage
Steering angle sensor
— Continuity
Connector Terminal
M30 1 Ground Existed
BRC-132
< ECU DIAGNOSIS >[VDC/TCS/ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
ECU DIAGNOSIS
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Reference ValueINFOID:0000000003767019
VALUES ON THE DIAGNOSIS TOOL
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short-circuited.
Monitor item Display contentData monitor
ConditionReference value in
normal operation
FR LH SENSORWheel speed calculated by front LH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
FR RH SENSORWheel speed calculated by front RH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
RR LH SENSORWheel speed calculated by rear LH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
RR RH SENSORWheel speed calculated by rear RH
wheel sensor signal is displayedVehicle stopped 0 [km/h (MPH)]
Vehicle running
(Note 1)Nearly matches the
speedometer dis-
play (± 10% or less)
STOP LAMP SW Stop lamp switch signal statusWhen brake pedal is depressed On
When brake pedal is not depressed Off
BATTERY VOLTBattery voltage supplied to the ABS ac-
tuator and electric unit (control unit)Ignition switch ON 10 – 16 V
GEAR Gear position determined by TCM1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
7th gear
8th gear
other0
1
2
3
4
5
6
7
0
OFF SW VDC OFF switch ON/OFFVDC OFF switch ON
(When VDC OFF indicator lamp is ON)On
VDC OFF switch OFF
(When VDC OFF indicator lamp is OFF)Off
YAW RATE SENYaw rate detected by yaw rate/side G
sensorVehicle stopped Approx. 0 d/s
Vehicle turning right Negative value
Vehicle turning left Positive value
ACCEL POS SIG Throttle actuator opening/closing is
displayed (linked with accelerator ped-
al)Accelerator pedal not depressed
(ignition switch is ON)0 %
Depress accelerator pedal
(ignition switch is ON)0 - 100 %
BRC-142
< SYMPTOM DIAGNOSIS >[VDC/TCS/ABS]
EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
SYMPTOM DIAGNOSIS
EXCESSIVE ABS FUNCTION OPERATION FREQUENCY
Diagnosis ProcedureINFOID:0000000003767023
1.CHECK START
Check front and rear brake force distribution using a brake tester. Refer to BR-45, "
General Specifications".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check brake system.
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles.
Front: Refer to FA X - 6 , "
Inspection".
Rear: Refer to RAX-3, "
Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning components.
3.CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following.
Wheel sensor installation for damage.
Sensor rotor installation for damage.
Wheel sensor connector connection.
Wheel sensor harness inspection.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace wheel sensor or sensor rotor.
Repair harness.
4.CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
Is the ABS warning lamp illuminated?
YES >> Perform self-diagnosis.
NO >> Normal
BRC-148
< SYMPTOM DIAGNOSIS >[VDC/TCS/ABS]
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000003767029
Symptom Result
Slight vibrations are felt on the brake pedal and the operation noises occur, when VDC, TCS or ABS is acti-
vated.
This is a normal condi-
tion due to the VDC,
TCS or ABS activation. Stopping distance is longer than that of vehicles without ABS when the vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
The brake pedal moves and generates noises, when TCS or VDC is activated due to rapid acceleration or
sharp turn.
The brake pedal vibrates and motor operation noises occur from the engine room, after the engine starts and
just after the vehicle starts.This is a normal, and it is
caused by the ABS op-
eration check.
Depending on the road conditions, the driver may experience a sluggish feel. This is normal, because
TCS places the highest
priority on the optimum
traction (stability). TCS may activate momentarily if wheel speed changes when driving over location where friction coefficient
varies, when downshifting, or when fully depressing accelerator pedal.
The ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp may turn ON when the vehicle is
subject to strong shaking or large vibration, such as when the vehicle is rotating on a turntable or located on
a ship while the engine is running. In this case, restart the
engine on a normal
road. If the normal con-
dition is restored, there
is no malfunction. At
that time, erase the self-
diagnosis memory. VDC may not operate normally or the ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp
may illuminate, when running on a special road that is extremely slanted (e.g. bank in a circuit course).
A malfunction may occur in the yaw rate/side G sensor system, when the vehicle turns sharply, such as dur-
ing a spin turn, axle turn, or drift driving, while the VDC function is off (VDC OFF indicator lamp illuminated).
The vehicle speed will not increase even though the accelerator pedal is depressed, when inspecting the
speedometer on a 2-wheel chassis dynamometer. Normal (Deactivate the
VDC/TCS function be-
fore performing an in-
spection on a chassis
dynamometer.)
VDC OFF indicator lamp and SLIP indicator lamp may simultaneously turn on when low tire pressure warn-
ing lamp turns on.This is not a VDC sys-
tem error but results
from characteristic
change of tire.
BRC-150
< PRECAUTION >[VDC/TCS/ABS]
PRECAUTIONS
Precaution for Brake Control
INFOID:0000000003767032
When starting engine or when starting vehicle just after starting engine, brake pedal may vibrate or motor
operating noise may be heard from engine compartment. This is normal condition.
When an error is indicated by ABS or another warning lamp, collect all necessary information from customer
(what symptoms are present under what conditions) and check for estimate causes before starting diagnos-
tic servicing. Besides electrical system inspection, check brake booster operation, brake fluid level, and oil
leaks.
If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.
ABS might be out of order or malfunctions by putting a radio (wiring inclusive), an antenna and a lead-in wire
near the control unit.
If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.
VDC system may not operate normally or a VDC OFF indicator lamp or SLIP indicator lamp may light.
- When replacing the following parts with parts other than genuine parts or making modifications: Suspension
related parts (shock absorber, spring, bushing, etc.), tires, wheels (other than specified sizes), brake-related
parts (pad, rotor, caliper, etc.), engine-related parts (muffler, ECM, etc.) and body reinforcement-related parts
(roll bar, tower bar, etc.).
- When driving with worn or deteriorated suspension, tires and brake-related parts.
Precautions for Harness RepairINFOID:0000000003843440
COMMUNICATION LINE
Solder the repaired area and wrap tape around the soldered area.
NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause communication error as spliced
wires that are separate from the main line or twisted lines lose
noise immunity.
Replace the applicable harness as an assembly if error is detected
on the shield lines of communication line.
SKIB8766E
SKIB8767E
WHEEL SENSOR
BRC-151
< ON-VEHICLE REPAIR >[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
N
O
P
ON-VEHICLE REPAIR
WHEEL SENSOR
FRONT WHEEL SENSOR
FRONT WHEEL SENSOR : Exploded ViewINFOID:0000000003767300
NOTE:
The above figure shows left side. Right side is the mirror image.
FRONT WHEEL SENSOR : Removal and InstallationINFOID:0000000003767301
REMOVAL
Be careful with the following when removing sensor.
CAUTION:
Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pulling
sensor harness.
Be careful to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before remov-
ing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor function.
INSTALLATION
Be careful with the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to BRC-151, "
FRONT WHEEL SENSOR : Exploded View".
CAUTION:
When installing, make sure there is no foreign material such as iron chips on and in the mounting
hole of the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove
any foreign material and clean the mount.
1. Front LH wheel sensor 2. Front LH wheel sensor connector
: Vehicle front
Refer to GI section GI-4, "
Components" for symbol marks in the figure.
JSFIA0221GB
BRC-152
< ON-VEHICLE REPAIR >[VDC/TCS/ABS]
WHEEL SENSOR
Completely push in rubber grommets of strut bracket and body bracket until they lock when install-
ing wheel sensor so that the wheel sensor harness will not be twisted. Install grommet groove onto
bracket with orange line on the harness facing bracket opening (mounting hole). There should be no
twists in the harness when installed.
REAR WHEEL SENSOR
REAR WHEEL SENSOR : Exploded ViewINFOID:0000000003767302
NOTE:
The above figure shows left side. Right side is the mirror image.
REAR WHEEL SENSOR : Removal and InstallationINFOID:0000000003767303
REMOVAL
Be careful with the following when removing sensor.
CAUTION:
Do not twist sensor harness as much as possible, when removing it. Pull sensors out without pulling
sensor harness.
Be careful to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before remov-
ing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor function.
INSTALLATION
Be careful with the following when installing wheel sensor. Tighten installation bolts to the specified torques.
Refer to BRC-152, "
REAR WHEEL SENSOR : Exploded View".
CAUTION:
When installing, make sure there is no foreign material such as iron chips on and in the mounting hole
of the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any
foreign material and clean the mount.
1. Rear LH wheel sensor connector 2. Rear LH wheel sensor
: Vehicle front
Refer to GI section GI-4, "
Components" for symbol marks in the figure.
JSFIA0222GB
CHG-22
< ON-VEHICLE REPAIR >
ALTERNATOR
Type: A003TJ1791
Removal and InstallationINFOID:0000000003860539
REMOVAL
1. Disconnect the negative battery terminal.
2. Remove engine cover.
3. Remove front wheel and tire (RH).
4. Remove splash guard (RH) Refer to EXT-22, "
FENDER PROTECTOR : Exploded View".
5. Remove air cleaner and air duct assembly. Refer to EM-26, "
Removal and Installation".
6. Remove drive belt. Refer to EM-25, "
Removal and Installation".
7. Remove A/C compressor. Refer to HA-36, "
Removal and Installation".
8. Remove idler pulley.
9. Disconnect the oil pressure switch.
10. Disconnect the alternator harness connectors.
11. Remove the alternator bolt and nuts.
12. Slide the alternator out and remove.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
JPMIA0859GB
1. Rear bearing 2. Rotor assembly 3. Retainer
4. Front bearing 5. Front bracket assembly 6. Through bolt
7. Pulley 8. Pulley nut 9. Stator assembly
10. IC voltage regulator assembly 11. Diode assembly 12. Rear bracket assembly
13. Terminal set
Refer to GI-4, "
Components" for symbols in the figure.