warning NISSAN TEANA 2003 Workshop Manual

SYSTEM DESCRIPTION
BRC-5
[ABS]
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BRC

SYSTEM DESCRIPTIONPFP:00000
System DiagramBFS000CO
FunctionsBFS000CP
ABS

The Anti-Lock Brake System is a function that detects wheel revolution while braking, and it improves
handling stability during sudden braking by electrically preventing 4 wheel lock. Maneuverability is also
improved for avoiding obstacles.

If the electrical system breaks down, then the fail-safe function is activated, ABS becomes inoperative,
and ABS warning lamp turns on.

Electrical system diagnosis by CONSULT-II is available.

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine room. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
SFIA3328E

BRC-6
[ABS]
SYSTEM DESCRIPTION

EBD

Electronic Brake Distribution is a function that detects subtle slippages between front and rear wheels dur-
ing braking, and it improves handling stability by electronically controlling Brake Fluid Pressure which
results in reduced rear wheel slippage.

In case of electrical system break down, the fail-safe function is activated, EBD and ABS becomes inoper-
ative, and ABS warning lamp and brake warning lamp are turned on.

Electrical system diagnosis by CONSULT-II is available.

During EBD operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating sound may
be heard from engine compartment. This is a normal condition of operation check.

Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
Fail-Safe FunctionBFS000CR
ABS, EBD SYSTEM
In case of electrical malfunctions with ABS, ABS warning lamp will turn on. In case of electrical malfunctions
with EBD, brake warning lamp and ABS warning lamp will turn on. Simultaneously, ABS become one of follow-
ing conditions of the fail-safe function.

For ABS malfunction, only EBD is activated and condition of vehicle is same condition of vehicles without
ABS system.
NOTE:
ABS self-diagnosis sound may be heard. That is a normal condition because a self-diagnosis for Ignition
switch ON and The first starting are being performed.

For EBD malfunction, EBD and ABS become inoperative, and condition of vehicle is same as condition of
vehicles without ABS, EBD system.
Hydraulic Circuit DiagramBFS000CS
SFIA2082E

BRC-16
[ABS]
TROUBLE DIAGNOSIS

Control Unit Input/Output Signal SpecificationsBFS000CY
REFERENCE VALUE FROM CONSULT-II
CAUTION:
The monitor displays the control unit calculation data. The normal values will be displayed even that in
the event the output circuit (harness) is open or shorted.
Note 1: Confirm tire pressure is the standard value.
Note 2: Brake warning lamp can be used for EBD warning lamp.
Note 3: ON/OFF timing of ABS warning lamp
ON: For a while after ignition switch is turned ON, or when a malfunction is detected.
OFF: In a while after the warning lamp is ON (when the system is in normal operation). Monitor item Display itemDATA MONITOR
ConditionReference values for
normal operation
WHEEL SENSORVehicle speed calculated using sig-
nals from all four wheel sensorsVehicle stopped 0 [km/h (MPH)]
Vehicle running (Note 1)Almost in accordance
with speedometer dis-
play (within ± 10 %)
IN ABS S/V
OUT ABS S/VOperation condition of all solenoid
valvesWhen actuator (solenoid) operates or
during fail-safeON
When actuator relay operates and the
actuator (solenoid) does not operateOFF
EBD WARN LAMP
(Note 2)Brake warning lamp ON/OFF condi-
tionWhen brake warning lamp is ON ON
When brake warning lamp is OFF OFF
STOP LAMP SW Brake pedal operation conditionBrake pedal depressed ON
Brake pedal not depressed OFF
MOTOR RELAYMotor and motor relay operation con-
ditionWhen motor relay and motor are
operatingON
When motor relay and motor are not
operatingOFF
ACTUATOR RLY Actuator relay operation conditionActuator relay activated ON
Actuator relay not activated OFF
ABS WARN LAMPABS warning lamp ON/OFF condition
(Note 3)When ABS warning lamp is ON ON
When ABS warning lamp is OFF OFF
BATTERY VOLTBattery voltage supplied to ABS actu-
ator and electric unit (control unit)Ignition switch ON 10−16 V
EBD SIGNAL EBD operation signalEBD activated ON
EBD not activated OFF
ABS SIGNAL ABS operation signalABS activated ON
ABS not activated OFF
ABS FAIL SIG
Fail-safe signal conditionIn ABS fail-safe
OFF
EBD FAIL SIG In EBD fail-safe

TROUBLE DIAGNOSIS
BRC-17
[ABS]
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CONSULT-II Functions (ABS)BFS000CZ
CONSULT-II MAIN FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to GI-34, "CONSULT-II Start Procedure" .
Self-Diagnosis BFS000D0
DESCRIPTION
If an error is detected in the system, ABS warning lamp on combination meter turn on. In this case, perform
self- diagnosis as follows.
OPERATION PROCEDURE
1. Turn ignition switch OFF.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-34, "
CONSULT-II Start Procedure" .
3. Turn ignition switch ON.
4. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
5. After stopping vehicle, with the engine running, touch “ABS”, “SELF-DIAG RESULTS” in order on the
CONSULT-II screen.
CAUTION:
If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on the
ignition switch, “ABS” might not be displayed in the System Selection screen. In this case, repeat
the operation from step 1. If it cannot be shown after several attempts, ABS actuator and electric
unit (control unit) may have malfunctioned.
6. The self-diagnostic results are displayed. (Touch “PRINT” to print out self-diagnostic results, if necessary.)

Check ABS warning lamp if “NO FAILURE” is displayed.
7. Perform the appropriate inspection from the display item list, and repair or replace the malfunctioning
component.
8. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
CAUTION:
When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning
lamp will not turn off even when the system is normal unless the vehicle is driving at approxi-
mately 30 km/h (19 MPH) or more for approximately 1 minute.
ERASE MEMORY
1. Turn ignition switch OFF.
2. Start engine and touch “ABS”, “SELF-DIAG RESULTS”, “ERASE MEMORY” in order on the CONSULT-II
screen to erase the error memory.
CAUTION:
If the error memory is not erased, re-perform the operation from step 4.
3. Perform self-diagnosis again, and make sure that diagnostic memory is erased.
4. Drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make
sure that the ABS warning lamp is off.
Diagnostic test mode Function Reference
SELF-DIAG RESULTS Self-diagnostic results can be read and erased quickly.BRC-17, "
Self-Diagno-
sis"
DATA MONITOR Input/Output data in the ABS actuator and electric unit (control unit) can be read.BRC-19, "Data Monitor"
CAN DIAG SUPPORT
MNTRThe results of transmit/receive diagnostic of CAN communication can be read.LAN-44, "CAN Diagnos-
tic Support Monitor"
ACTIVE TESTDiagnostic Test Mode in which CONSULT-II drives some actuators apart from
the ABS actuator and electric unit (control unit) and also shifts some parameters
in a specified range.BRC-20, "Active Test"
FUNCTION TESTPerformed by CONSULT-II instead of a technician to determine whether each
system is “OK” or “NG”.—
ECU PART NUMBER ABS actuator and electric unit (control unit) part number can be read. —

TROUBLE DIAGNOSIS
BRC-19
[ABS]
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BRC

Note 1: After completing repairs of the shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Make sure
that ABS warning lamp turns off while driving the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute according to self-diag-
nosis procedure. In addition, if wheel sensor 2 is displayed for the wheels, check the wheel sensor circuit and also check the control unit
power voltage.
Note 2: When malfunctions are detected in several systems, including the CAN communication system [U1000], perform trouble diagno-
sis on the CAN communication system.
Data MonitorBFS000D1
OPERATION PROCEDURE
1. Turn ignition switch OFF.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-34, "
CONSULT-II Start Procedure" .
3. Turn ignition switch ON.
4. At the monitor item selection screen, touch one of the items “ECU INPUT SIGNALS”, “MAIN SIGNALS” or
“SELECTION FROM MENU”.
5. Touch “START” to proceed to the data monitor screen.
DISPLAY ITEM LIST
Item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN SIGNALSSELECTION
FROM MENU
FR LH SENSOR
[km/h (MPH)]×××Condition of wheel speed calculated by front
left wheel sensor signal is displayed.
FR RH SENSOR
[km/h (MPH)]×××Condition of wheel speed calculated by front
right wheel sensor signal is displayed.
RR LH SENSOR
[km/h (MPH)]×××Condition of wheel speed calculated by rear
left wheel sensor signal is displayed.
RR RH SENSOR
[km/h (MPH)]×××Condition of wheel speed calculated by rear
right wheel sensor signal is displayed.
FR RH IN SOL
(ON/OFF)—××Condition of front right wheel ABS inlet sole-
noid valve (ON/OFF) is displayed.
FR RH OUT SOL
(ON/OFF)—××Condition of front right wheel ABS outlet sole-
noid valve (ON/OFF) is displayed.
FR LH IN SOL
(ON/OFF)—××Condition of front left wheel ABS inlet solenoid
valve (ON/OFF) is displayed.
FR LH OUT SOL
(ON/OFF)—××Condition of front left wheel ABS outlet sole-
noid valve (ON/OFF) is displayed.
RR RH IN SOL
(ON/OFF)—××Condition of rear right wheel ABS inlet sole-
noid valve (ON/OFF) is displayed.
RR RH OUT SOL
(ON/OFF)—××Condition of rear right wheel ABS outlet sole-
noid valve (ON/OFF) is displayed.
RR LH IN SOL
(ON/OFF)—××Condition of rear left wheel ABS inlet solenoid
valve (ON/OFF) is displayed.
RR LH OUT SOL
(ON/OFF)—××Condition of rear left wheel ABS outlet sole-
noid valve (ON/OFF) is displayed.
EBD WARN LAMP
(ON/OFF) (Note)——×Condition of brake warning lamp (ON/OFF) is
displayed.
STOP LAMP SW
(ON/OFF)×××Condition of stop lamp switch (ON/OFF) is dis-
played.
MOTOR RELAY
(ON/OFF)—××Condition of ABS motor relay (ON/OFF) is dis-
played.
ACTUATOR RLY
(ON/OFF)—××Condition of ABS actuator relay (ON/OFF) is
displayed.
ABS WARN LAMP
(ON/OFF)—××Condition of ABS warning lamp (ON/OFF) is
displayed.

BRC-20
[ABS]
TROUBLE DIAGNOSIS

×: Applicable
−: Not applicable
Note: Brake warning lamp can be used for EBD warning lamp.
Active TestBFS000D2
CAUTION:

Do not perform ACTIVE TEST while driving vehicle.

Make sure to completely bleed air from brake system.

Active test cannot be performed when ABS warning lamp is turned on.

ABS and brake warning lamps turn on during active test.
OPERATION PROCEDURE
1. Perform “CONSULT-II Starting procedure”. Refer to GI-34, "CONSULT-II Start Procedure" .
2. Touch “ACTIVE TEST” in order on the CONSULT-II screen.
3. The “ SELECT TEST ITEM” screen is displayed.
4. Touch necessary test item.
5. Touch “START” with “MAIN SIGNALS” line inverted.
6. ACTIVE TEST screen will be displayed, so perform the following test.

Solenoid valve

ABS motor
NOTE:

When active test is performed while depressing brake pedal, the pedal height will change, but this is
normal.

Approximately 10 seconds after operation has begun, “TEST STOP” will be displayed.

To perform a retest after “TEST STOP” is displayed, touch “BACK” and perform test from step 3.
BATTERY VOLT
(V)×××Condition of voltage supplied to ABS actuator
and electric unit (control unit) is displayed.
EBD SIGNAL
(ON/OFF)——×Condition of EBD operation (ON/OFF) is dis-
played.
ABS SIGNAL
(ON/OFF)——×Condition of ABS operation (ON/OFF) is dis-
played.
EBD FAIL SIG
(ON/OFF)——×Condition of EBD fail-safe signal (ON/OFF) is
displayed.
ABS FAIL SIG
(ON/OFF)——×Condition of ABS fail-safe signal (ON/OFF) is
displayed. Item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN SIGNALSSELECTION
FROM MENU
SFIA2085E

TROUBLE DIAGNOSIS
BRC-23
[ABS]
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BRC

INSPECTION OF ABS WARNING LAMP AND BRAKE WARNING LAMP
×: ON —: OFF
Note 1: The brake warning lamp turns on during parking brake operation (when switch is on) and brake fluid level sensor operation
(insufficient brake fluid).
Note 2: Turns off after engine start
1. Make sure that when the ignition switch is turned ON, the ABS warning lamp turns ON for approximately 1
second, and that the brake warning lamp turns on. If they do not turn on, perform CAN communication
system diagnosis. Refer to BRC-29, "
CAN Communication System" .
2. Check if the ABS warning lamp turns off approximately 1 second after the ignition switch is turned ON,
and if the brake warning lamp turns off after the engine is started. If they do not turn off, perform self-diag-
nosis.
3. If ABS warning lamp has not turned off 10 seconds after the engine has been started, perform self-diagno-
sis of the ABS actuator and electric unit (control unit).
4. Always erase the self-diagnostic results after completing self-diagnosis. Refer to BRC-17, "
ERASE MEM-
ORY" .
NOTE:
Brake warning lamp turns on during parking brake operation (when switch is ON) and brake fluid level
sensor operation (insufficient brake fluid).
Condition ABS warning lampBrake warning lamp
(Note 1)Remarks
Ignition switch OFF — — —
For a while after ignition switch is turned ON×× (Note 2) —
In a while after ignition switch is turned ON
(When system is normal)—× (Note 2)Turns OFF 2 seconds after ignition
switch is turned ON.
ABS error×— When there is an ABS actuator and elec-
tric unit (control unit) error (power or
ground malfunction). EBD error××

BRC-30
[ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS

TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyBFS000DC
1. CHECK START
Check front/rear brake force distribution using a brake tester. Refer to BR-40, "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
OK or NG
OK >> GO TO 2.
NG >> Check brake system.
2. CHECK FRONT AND REAR AXLE
Check to make sure that there is no excessive play in the front and rear axles. Refer to Front: FAX-5, "
On-
Vehicle Inspection" , Rear: RAX-3, "On-Vehicle Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Repair.
3. CHECK WHEEL SENSOR AND SENSOR ROTOR
Check wheel sensor and sensor rotor for the following.

Sensor installation for damage

Sensor rotor installation for damage

Sensor connector connection

Sensor harness inspection
OK or NG
OK >> GO TO 4.
NG >>

Replace wheel sensor or sensor rotor.

Repair harness.
4. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp turns off approximately 1 second after the ignition switch is turned ON or
when driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-17, "
Self-Diagnosis" .
Unexpected Pedal ActionBFS000DD
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
Inspection and Adjustment" .
Is the stroke too big?
YES >>
Bleed air from the brake piping. Refer to BR-10, "Bleeding Brake System" .

Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake fluid
leakage, etc. Repair if necessary. Refer to Brake pedal: BR-7, "
COMPONENTS" , brake
booster and master cylinder: BR-22, "
COMPONENTS" .
NO >> GO TO 2.

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-31
[ABS]
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2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition. Connect connector after inspection.
OK or NG
OK >> GO TO 3. Check Wheel Sensor and Sensor Rotor. Refer to BRC-30, "Excessive ABS Function
Operation Frequency" .
NG >> Check brake system.
Longer Stopping DistanceBFS000DE
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connectors to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connectors.
OK or NG
OK >> GO TO 3. Check Wheel Sensor and Sensor Rotor. Refer to BRC-30, "Excessive ABS Function
Operation Frequency" .
NG >>

Bleed air from the brake piping. Refer to BR-10, "Bleeding Brake System" .

Check brake system.
ABS Function Does Not OperateBFS000DF
CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp turns off approximately 1 second after the ignition switch is turned ON or
when driving.
OK or NG
OK >> GO TO 3. Check Wheel Sensor and Sensor Rotor. Refer to BRC-30, "Excessive ABS Function
Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-17, "
Self-Diagnosis" .
Pedal Vibration and ABS Operation Sound OccursBFS000DG
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]

When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or more]
1. SYMPTOM CHECK 1
Check if there is pedal vibration and operation sound when the engine is started.
OK or NG
OK >> GO TO 2.
NG >> Perform self-diagnosis. Refer to BRC-17, "
Self-Diagnosis" .

BRC-36
[ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
3. Remove ABS actuator and electric unit (control unit) mounting bolts.
4. Remove ABS actuator and electric unit (control unit) from vehicle.
CAUTION:
Be careful of the following when removing ABS actuator and electric unit (control unit).

If the part number on the part number label (pasted on actuator upper surface) is the same, ABS
actuator and electric unit (control unit) cannot be used on another vehicle.
If it is used on another vehicle, ABS warning lamp, may turn ON or ABS may not operate normally.
When replacing ABS actuator and electric unit (control unit), must use new service parts.

Before servicing, disconnect both battery cables.

To remove brake tube, use a flare nut torque wrench to prevent flare nuts and brake tube from
being damaged. To install, use a flare nut torque wrench (commercial service tool) and tighten
with the specified torque.

Do not apply excessive impact to actuator, such as dropping it.

Do not remove and install ABS actuator and electric unit (control unit) by holding harness.
INSTALLATION
Install is in the reverse order of the removal.
CAUTION:
Be careful of the following when installing ABS actuator and electric unit (control unit).

Tighten the mounting bolts and nuts with the specified torque.

After the work, bleed air from brake piping. Refer to BR-10, "Bleeding Brake System" .

After installing body harness connector in the actuator, make sure connector is securely locked.