ECU NISSAN TEANA 2003 Manual PDF

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

BRC-78
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

3. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) harness connectors.
2. Check voltage between the ABS actuator and electric unit (con-
trol unit) harness connector E241 terminal 23 and ground.
OK or NG
OK >> Connect connector securely and perform self-diagnosis again.
NG >> Stop lamp switch circuit malfunction. Repair the circuit.
ABS Actuator and Electric Unit (Control Unit) Power Supply and Ground Sys-
tem
BFS000EG
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) harness 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 is loose, damaged, open or shorted.
NG >> GO TO 3.
SFIA2104E
ABS actuator and electric unit (control unit) Ground Measurement condition Voltage
23 —Brake pedal depressedBattery voltage
(Approx. 12 V)
Brake pedal not depressed Approx. 0 V
Self-diagnostic results
BATTERY VOLTAGE [ABNORMAL]

BRC-80
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM

Brake Fluid Level Switch SystemBFS000EH
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
1. Check fluid level in brake fluid reservoir tank. If the level is low, add brake fluid.
2. 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 brake fluid
level switch, and check terminal for deformation, disconnection, looseness, and so on. Repair or replace if
there is a malfunction.
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 HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT)
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor.
2. Check continuity between ABS actuator and electric unit (control
unit) harness connector E241 and brake fluid level switch con-
nector E52.
OK or NG
OK >> Connect connector securely and perform self-diagnosis
again.
NG >> If open or short in harness, repair or replace the har-
ness.
Self-diagnostic results
BR FLUID LEVEL LOW
ABS actuator and electric unit
(control unit)Brake fluid level switch Continuity
38 1 Yes
38 Ground No
Ground 2 Yes
SFIA2105E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-81
[VDC/TCS/ABS]
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CAN Communication SystemBFS000EI
Inspection Procedure
1. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and steer-
ing angle sensor connector. Check terminal for deformation, disconnection, looseness, and so on. If any
malfunction is found, repair or replace terminal.
2. Securely reconnect connectors and perform self-diagnosis.
Is above displayed in the self-diagnosis item?
YES >> Print out self-diagnostic results and go to LAN-49, "CAN System Specification Chart" .
NO >> Connector terminal connection is loose, damaged, open or shorted.
Component Parts InspectionBFS000EJ
VDC OFF SWITCH

Turn ignition switch OFF, and disconnect the VDC OFF switch
connector, and check continuity between terminals 1 and 2.
Self-diagnostic results
CAN COMM CIRCUIT
ST ANG SEN COM CIR
1 - 2 : Continuity should exist when pushing
switch.
Continuity should not exist when releasing
switch.
SFIA2519E

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-85
[VDC/TCS/ABS]
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BRC

Vehicle Jerks During VDC/TCS/ABS ControlBFS000EP
1. SYMPTOM CHECK
Check if the vehicle jerks during VDC/TCS/ABS control.
OK or NG
OK >> Normal
NG >> GO TO 2.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnostic of ABS actuator and electric unit (control unit).
Are self-diagnostic results indicated?
YES >> Check the corresponding items, make repairs, and perform ABS actuator and electric unit (control
unit) self-diagnosis.
NO >> GO TO 3.
3. 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. Repair or replace, if there is a malfunc-
tion.
2. Securely connect connectors. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnostic results indicated?
YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.
NO >> GO TO 4.
4. CHECK ECM AND TCM SELF-DIAGNOSTIC RESULTS
Perform ECM and TCM self-diagnosis.

ECM self-diagnosis: Refer to EC-394, "TROUBLE DIAGNOSIS" .

TCM self-diagnosis: Refer to AT- 3 4 , "TROUBLE DIAGNOSIS" or CVT-24, "TROUBLE DIAGNOSIS" .
Are self-diagnostic results indicated?
YES >> Check the corresponding items, make repairs.
NO >> Replace ABS actuator and electric unit (control unit).

BRC-86
[VDC/TCS/ABS]
WHEEL SENSORS

WHEEL SENSORSPFP:47910
Removal and InstallationBFS000EQ
COMPONENTS
REMOVAL
Be careful of the following.
CAUTION:
When removing the wheel sensor, do not rotate it if possible, and do not forcibly pull the wheel sensor
harness.
INSTALLATION
Note the following, and tighten bolts to the specified torque.

Check the inside of the wheel sensor mounting hole for foreign materials, the rotor surface for iron chips
and other foreign materials. Clean both the wheel sensor mounting hole and the rotor surface before
installation. Replace the wheel sensor if there is any non-standard condition.

Completely push in rubber clamp of strut bracket and body bracket until they lock when installing front
wheel sensor so that the wheel sensor harness will not be twisted. Install grommet groove onto bracket
with yellow line on the harness facing bracket opening (mounting hole). There should be no twists in the
harness when installed.

When installing the rear sensor, securely install the harness mount of the rear suspension member so that
the wheel sensor harness is not twisted. In addition, there should be no twists in the harness when
installed.
SFIA2091E

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-89
[VDC/TCS/ABS]
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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 nuts.
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, SLIP indicator lamp and VDC OFF indicator
lamp may turn ON or VDC/TCS/ABS may not operate normally.
When replacing ABS actuator and electric unit (control unit), must use new service parts.

Before servicing, disconnect 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

When replacing ABS actuator and electric unit (control unit), calibrate Steering angle sensor neu-
tral position. Refer to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .

RADIATOR (ALUMINUM TYPE)
CO-19
[QR]
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4. Make sure that the rim is completely crimped down.
5. Make sure that there is no leakage. Refer to CO-19, "
INSPECTION" .
INSPECTION
1. Apply pressure with radiator cap tester adapter (SST) and radia-
tor cap tester (commercial service tool).
WARNING:
To prevent the risk of hose coming undone while under
pressure, securely fasten it down with hose clamp.
CAUTION:
Attach hose to A/T fluid cooler to seal its inlet and outlet.
2. Check for leakage by soaking radiator in water container with
the testing pressure applied.Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC933
SLC934

RADIATOR (ALUMINUM TYPE)
CO-43
[VQ]
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4. Make sure that the rim is completely crimped down.
5. Make sure that there is no leakage. Refer to CO-43, "
INSPECTION" .
INSPECTION
1. Apply pressure with radiator cap tester adapter (SST) and radia-
tor cap tester (commercial service tool).
WARNING:
To prevent the risk of hose coming undone while under
pressure, securely fasten it down with hose clamp.
CAUTION:
Attach hose to A/T fluid cooler or CVT fluid cooler to seal its
inlet and outlet.
2. Check for leakage by soaking radiator in water container with
the testing pressure applied.Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC933
SLC934