2003 NISSAN TEANA ignition

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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B
BRC

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.

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××

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-25
[ABS]
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B
BRC

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 E240.
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).
SFIA3323E
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 21 1 12 2 21, 12
3, 4 Front LH 23 1 27 2 23, 27
Rear RH 11 1 15 2 11, 15
Rear LH 26 1 30 2 26, 30
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

BRC-26
[ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

ABS Actuator and Electric Unit (Control Unit) 1BFS000D6
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is the above display on the screen?
YES >> Replace ABS actuator and electric unit (control unit). Perform self-diagnosis again.
NO >> INSPECTION END
ABS Actuator and Electric Unit (Control Unit) Power Supply and Ground CircuitBFS000D7
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check self-diagnostic results.
Is the above display on the screen?
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
the 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.
Self-diagnostic results
CONTROLLER FAILURE
Self-diagnostic results
BATTERY VOLTAGE [ABNORMAL]

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-27
[ABS]
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B
BRC

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector.
2. Check voltage between ABS actuator and electric unit (control
unit) harness connector E240 terminal 16 and ground with igni-
tion switch turned ON and OFF.
3. Check continuity between ABS actuator and electric unit (control
unit) harness connector E240 terminals 3, 4 and ground.
OK or NG
OK >> Check battery for terminal looseness, low voltage, etc. If
any malfunction is found, repair malfunctioning parts.
NG >> Corresponding harness circuit malfunctions. Repair cir-
cuit.
SFIA3324E
ABS actuator and electric unit (control unit) Ground Measurement condition Voltage
16 —Ignition switch ON Battery voltage (Approx. 12 V)
Ignition switch OFF Approx. 0 V
ABS actuator and electric unit (contorl unit) Ground Continuity
3, 4 — Yes
SFIA3325E

BRC-28
[ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

ABS Actuator Relay or ABS Motor Relay Power SystemBFS000D8
INSPECTION PROCEDURE
1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND
CIRCUIT
Check the self-diagnostic results.
Is the above display on the screen?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connectors, and
check the 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 ACTUATOR RELAY OR ABS MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector.
2. For the ABS actuator relay, measure voltage between the har-
ness connector E240 terminal 2 and ground. For the ABS motor
relay, measure voltage between the harness connector E240
terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Circuit malfunction between the battery and ABS actuator and electric unit (control unit). Repair
circuit.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E240 terminals 3, 4 and ground.
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Open or short in harness. Repair or replace harness.
Self-diagnostic results
IN ABS SOL
OUT ABS SOL
ACTUATOR RLY
ABS actuator and electric unit (contorl unit) Ground Voltage
1, 2 —Battery voltage
(Approx. 12 V)
SFIA3326E
ABS actuator and electric unit (contorl unit) Ground Continuity
3, 4 — Yes
SFIA3325E