Connector NISSAN TEANA 2003 Service Manual

BRC-44
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble Diagnosis Quick and Accurate RepairBFS000DX
INTRODUCTION

Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask the customer about his/her complaints carefully. In some
cases, it will be necessary to check symptoms by driving vehicle
with the customer.
NOTE:
Customers are not professionals. Do not assume “maybe cus-
tomer means...” or “maybe the customer mentioned this symp-
tom”.

It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptoms based on an interview with customers and past
examples. Do not perform an inspection on ad hoc basis. Most
intermittent malfunctions are caused by poor contacts. In this
case, it will be effective to shake suspected harness or connec-
tors by hand. When repairs are performed without any symptom
check, no one can judge if malfunction has actually been elimi-
nated.

After diagnosis, make sure to perform “erase memory”. Refer to
BRC-58, "
ERASE MEMORY" .

For an intermittent malfunction, move harness or harness connector by hand to check poor contact or
false open circuit.

Always read “GI section” to confirm general precautions. Refer to GI-4, "General Precautions" .
EFJ0028D
SEF233G

TROUBLE DIAGNOSIS
BRC-65
[VDC/TCS/ABS]
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For Fast and Accurate DiagnosisBFS000E6
PRECAUTIONS FOR DIAGNOSIS

Be sure to check the procedures of “How to Perform Trouble Diagnosis” in advance. Refer to GI-4, "Gen-
eral Precautions" .

Always adjust the neutral position of steering angle sensor before driving when removing and installing
ABS actuator and electric unit (control unit), steering angle sensor, suspension parts and adjusting align-
ment. Refer to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .

Always erase memory after completing trouble diagnosis. Refer to BRC-58, "ERASE MEMORY" .

When inspection of the continuity or voltage between modules or units is performed, check connector ter-
minals for disconnection, looseness, bend, or collapse. Repair or replace applicable part if any non-stan-
dard condition is detected.

Intermittent malfunctions may be caused by a poor connection in the harness, connectors, and terminals.
Move harnesses, harness connectors, and terminals by hand to make sure all connections are solid and
undamaged.

Do not to forcibly extend any connector terminal if a circuit tester is used for the check.

The symptom shown in the table may occur, but the system is operating normally.
Symptom Symptom description Result
Motor operation soundThis is the operation sound of the motor in the actuator and electric unit.Slight
sound may occur during VDC, TCS and ABS operation.
Normal
Just after the engine starts, the motor operating noise may be heard. This is a
normal status of the system operation check.
System operation check soundWhen engine starts, “click” sound may be heard from engine room. This is nor-
mal status of system operation check.Normal
VDC/TCS operation
(SLIP indicator lamp ON)TCS may activate momentarily if wheel speed changes when driving over
location where friction coefficient varies, when downshifting, or when fully
depressing accelerator pedal.
Normal
Cancel the VDC/
TCS function for
the inspection on
a chassis dyna-
mometer. Before the speed meter inspection, push VDC OFF switch to cancel the VDC/
TCS function.
When accelerator pedal is depressed on a chassis dynamometer (front wheel
fixing type), the vehicle speed will not increase. This is normal. It is result of
TCS being activated by stationary front wheels. The warning lamp may also
turn on to show “sensor system malfunction” in this case. This is also normal,
and is the result of the stationary front wheels being detected. Restart engine,
and drive the vehicle at 30 km/h (19 MPH) or more to make sure that the warn-
ing lamp no longer turns on.
ABS operation
(Longer stopping distance)When driving on roads with a low coefficient of friction, such as snowy roads or
gravel roads, the stopping distance is sometimes longer for vehicles equipped
with ABS. Therefore, when driving on such roads, drive at a sufficiently
reduced speed to be safe.Normal
Sluggish feelDepending on road conditions, the driver may have a sluggish feel. This is
because traction control, which controls engine and brakes to achieve optimal
traction, has the highest priority (for safety). As a result sometimes the driver
has a less slight sluggish feel in response than usual acceleration feel.Normal

BRC-68
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

TROUBLE DIAGNOSIS FOR SYSTEMPFP:00000
Wheel Sensor SystemBFS000E8
Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.
CAUTION:
Do not check between wheel sensor terminals.
INSPECTION PROCEDURE
1. CHECK TIRE
Check air pressure, wear and size.
Are air pressure, wear and size within the standards?
YES >> GO TO 2.
NO >> Adjust air pressure, or replace tire.
2. CHECK SENSOR AND SENSOR ROTOR

Check sensor and sensor rotor.

Check sensor rotor rubber for damage.

Check sensor for disconnection or looseness.
OK or NG
OK >> GO TO 3.
NG >> Repair sensor mount or replace sensor rotor.
3. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 4.
NO >> INSPECTION END
4. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and malfunctioning wheel sensor con-
nector. Check terminal for deformation, open circuit, pooh contact, etc., and repair or replace if any mal-
function is found.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then
perform self-diagnosis.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 5.
Self-diagnostic results
FR RH SENSOR-1, -2
FR LH SENSOR -1, -2
RR RH SENSOR-1, -2
RR LH SENSOR-1, -2

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-69
[VDC/TCS/ABS]
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5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E10 (FR-RH), E38 (FR-LH), C2 (RR-RH), C3
(RR-LH) and ABS actuator and electric unit (control unit) con-
nector E241.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA2098E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)
(Signal)ABS actuator
and electric unit
(control unit)
(Ground)
Front RH 26 1 27 2 26, 27
31, 46 Front LH 14 1 13 2 14, 13
Rear RH 12 1 11 2 11, 12
Rear LH 28 1 29 2 28, 29
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1—8 V or more Front LH
Rear RH
Rear LH
SFIA3339E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-71
[VDC/TCS/ABS]
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Steering Angle Sensor SystemBFS000EB
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector and steering
angle sensor connector, and check the terminal for deformation, disconnection, looseness, and so on.
Repair or replace the malfunctioning part if there are.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact was loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication system. Refer to BRC-81, "
CAN Communication System" .
2. Turn ignition switch OFF and disconnect steering angle sensor connector M26.
3. Check continuity between steering angle sensor harness con-
nector and ground.
4. Check voltage between steering angle sensor harness connec-
tor and ground.
OK or NG
OK >> GO TO 4.
NG >> Open or short in harness. Repair or replace harness.
Self-diagnostic results
ST ANGLE SIG CIRCUIT
Steering angle sensor Ground Continuity
2—Yes
SFIA1189E
Steering angle sensor Ground Voltage
3 — Battery voltage (Approx. 12 V)
SFIA1190E

BRC-72
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

4. CHECK DATA MONITOR
1. Connect ABS actuator and electric unit (control unit) connector and steering angle sensor.
2. Perform “ST ANGLE SIG” at “DATA MONITOR” to check if the status is normal.
OK or NG
OK >> Perform self-diagnosis again.
NG >> Replace steering angle sensor, and then adjust neutral position of steering angle sensor. Refer to
BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .
Yaw Rate/Side/Decel G Sensor SystemBFS000EC
CAUTION:
When the vehicle turns sharply, such as a spin turn, accel turn, or drift driving, while the VDC function
is OFF (VDC OFF indicator lamp turns on), a malfunction may occur in the yaw rate/side/decel G sen-
sor system, so in this case, restart the engine, and if it recovers normally, there is no malfunction.
Always erase memory after that. Refer to BRC-58, "
ERASE MEMORY" .
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector and yaw rate/
side/decel G sensor connector, and check the terminal for deformation, disconnection, looseness, and so
on. Repair or replace the malfunctioning part if there are.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact was loose, damaged, open or shorted.
NG >> GO TO 3.
Steering condition DATA MONITOR
Straight-ahead position−5° to +5°
Turn wheel to the right by 90°. Approx. +90°
Turn wheel to the left by 90°. Approx. −90°
Self-diagnostic results
YAW RATE SENSOR
SIDE G-SEN CIRCUIT
G-SENSOR

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-73
[VDC/TCS/ABS]
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3. CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector E241 and yaw rate/side/decel G
sensor connector M66.
2. Check continuity between ABS actuator and electric unit (control
unit) connector and yaw rate/side/decel G sensor connector.
OK or NG
OK >> GO TO 4.
NG >> Open or short in harness. Repair or replace harness.
4. CHECK YAW RATE/SIDE/DECEL G SENSOR
1. Connect connectors of ABS actuator and electric unit (control unit) and yaw rate/side/decel G sensor.
2. Use “DATA MONITOR” to make sure that G sensor (yaw rate/side) operates normally.
Data Monitor Standard
OK or NG
OK >> INSPECTION END
NG >> Yaw rate/side/decel G sensor malfunction. Replace sensor, and after replacement, perform self-
diagnosis again.
SFIA2112E
ABS actuator and electric unit (control unit) Yaw rate/side/decel G sensor Continuity
19 1
Ye s 36 2
35 3
34 4
45
66
Vehicle status Yaw rate sensor Side G sensor Decel G sensor
When stopped−99 to +99 d/s
−1.1 to +1.1 m/s
2−0.21 to +0.21 G
Right turn Positive value Negative value —
Left turn Negative value Positive value —
During acceleration — — Positive value
During deceleration — — Negative value

BRC-74
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

Pump Motor, Motor Relay SystemBFS000ED
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and check
terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace
the terminal.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact was loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK ABS MOTOR AND MOTOR RELAY POWER SYSTEM
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector.
2. Check voltage between the ABS actuator and electric unit (con-
trol unit) harness connector E241 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Circuit malfunction between battery and ABS actuator
and electric unit (control unit). Repair circuit.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

ABS actuator and electric unit (control unit) harness connector
E241 terminals 31, 46 and ground.
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Harness or connector is open or shorted. Repair or
replace malfunctioning components.
Self-diagnostic results
PUMP MOTOR
ABS actuator and electric unit (contorl unit) Ground Voltage
1—Battery voltage
(Approx. 12 V)
SFIA2100E
ABS actuator and electric unit (contorl unit) Ground Continuity
31, 46 — Yes
SFIA2114E

BRC-76
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

Solenoid and VDC Change-Over Valve, Actuator Relay SystemBFS000EE
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector, and check ter-
minal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace ter-
minal.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK SOLENOID, VDC CHANGE-OVER VALVE, ACTUATOR RELAY POWER SUPPLY
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connectors.
2. Check voltage between ABS actuator and electric unit (control
unit) harness connector E241 terminal 16 and ground.
OK or NG
OK >> GO TO 4.
NG >> Circuit malfunction between battery and ABS actuator
and electric unit (control unit). Repair the circuit.
Self-diagnostic results
FR LH IN ABS SOL
FR LH OUT ABS SOL
FR RH IN ABS SOL
FR RH OUT ABS SOL
RR LH IN ABS SOL
RR LH OUT ABS SOL
RR RH IN ABS SOL
RR RH OUT ABS SOL
CV 1
CV 2
SV 1
SV 2
ACTUATOR RLY
ABS actuator and electric unit (contorl unit) Ground Voltage
16 —Battery voltage
(Approx. 12 V)
SFIA2102E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-77
[VDC/TCS/ABS]
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BRC

4. CHECK SOLENOID, VDC CHANGE-OVER VALVE, ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (control
unit) harness connector E241 terminal 46 and ground.
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Harness or connector is open or shorted. Repair or
replace malfunctioning components.
Stop Lamp Switch SystemBFS000EF
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect ABS actuator and electric unit (control unit) connector and stop lamp
switch connector, and check terminal for deformation, disconnection, looseness, and so on. If there is a
malfunction, repair or replace the terminal.
2. Securely reconnect connectors.
3. Start engine.
4. Repeat pumping brake pedal carefully several times, and then perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
ABS actuator and electric unit (contorl unit) Ground Continuity
46 — Yes
SFIA2103E
Self-diagnostic results
STOP LAMP SW