display NISSAN LATIO 2011 Service Manual Online

BRC-18
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
• If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified
torque and recheck for leaks.
• If there is damage to the connection flare nut or AB S actuator and electric unit (control unit) threads,
replace the damaged part and recheck for leaks.
• When there is fluid leaking or seeping from a fluid connection, use a clean cloth to wipe off the fluid and
recheck for leaks. If fluid is still seeping out, replac e the damaged part. If the fluid is leaking at the ABS
actuator and electric unit (control unit), replace the ABS actuator and electric unit (control unit) assem-
bly.
CAUTION:
The ABS actuator and electric unit (control un it) cannot be disassembled and must be replaced
as an assembly.
3. Check the brake pads for excessive wear.
POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure the battery positive cable, negative cabl e and ground connection are not loose. In addition, make
sure the battery is sufficiently charged.
ABS WARNING LAMP INSPECTION
1. Make sure ABS warning lamp turns on for approximately 2 seconds when the ignition switch is turned ON. If it does not, check CAN communications. If there are no errors with the CAN communication system,
replace the combination meter. Refer to IP-12, "
Removal and Installation".
2. Make sure the lamp turns off approximately 2 seconds after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnos is of ABS actuator and electric unit (control unit). If no malfunctions
are detected in self-diagnosis, replace combination meter. Refer to IP-12, "
Removal and Installation".
3. After conducting the self-diagnosis, be sure to erase the error memory. Refer to BRC-19, "
CONSULT-III
Function (ABS)".
Warning Lamp and Indicator TimingINFOID:0000000005928443
Note 1: Brake warning lamp will turn on when the parking brake is applied or when the brake fluid level is low.
x: ON
–: OFF
Control Unit Input/Output Signal StandardINFOID:0000000005928444
REFERENCE VALUE FROM CONSULT-III
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.
Condition ABS
warning lamp BRAKE
warning lamp [Note 1] Remarks
When the ignition switch is OFF –– –
After the ignition switch is turned ON for approx. 1
second ××
–
After the ignition switch is turned ON for approx. 2
seconds ––Lamp goes off approx. 2 seconds after the
engine is started.
ABS malfunction ×––
EBD malfunction ××–
Revision: May 2010 2011 Versa

TROUBLE DIAGNOSISBRC-19
< SERVICE INFORMATION > [ABS]
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Note 1: Confirm tire pressure is normal.
Note 2: ON/OFF timing of ABS warning lamp
ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected.
OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation).
CONSULT-III Function (ABS)INFOID:0000000005928445
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
Monitor item Display content Data monitor
Note: Error inspection
checklist
Condition Reference value in
normal operation
FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSOR Wheel speedVehicle stopped
0 [km/h (MPH)]
BRC-25, "
Wheel Sensor
System"Vehicle running (Note 1) Almost in accor-
dance with speed-
ometer display
(within
±10%)
BATTERY VOLT Battery voltage sup-
plied to ABS actuator
and electric unit (con-
trol unit)Ignition switch ON
10 to 16VBRC-28, "
ABS Control
Unit Power and Ground
Systems Inspection"
STOP LAMP SW
Stop lamp switch oper-
ationBrake pedal depressed ON
—
Brake pedal not depressed OFF
ABS WARN LAMP ABS warning lamp ON
condition (Note 2)ABS warning lamp ON ON
BRC-17, "
Basic Inspec-
tion"ABS warning lamp OFF OFF
MOTOR RELAY Operation status of mo-
tor and motor relayIgnition switch ON or running
(ABS not activated)
OFF
BRC-27, "
Actuator Motor,
Motor Relay, and Circuit
Inspection"Ignition switch ON or engine
running (ABS activated) ON
ACTUATOR RLY Actuator relay opera-
tion statusVehicle stopped (Ignition
switch ON)
OFF
BRC-27, "
Actuator Motor,
Motor Relay, and Circuit
Inspection"Vehicle stopped (Engine run-
ning) ON
FR LH IN SOL
FR LH OUT SOL
FR RH IN SOL
FR RH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL Solenoid valve opera-
tionActuator (solenoid) is active
(“ACTIVE TEST” with CON-
SULT-III) or actuator relay is in-
active (in fail-safe mode).
ON
BRC-26, "
Solenoid Valve
System Inspection"When actuator (solenoid) is not
active and actuator relay is ac-
tive (ignition switch ON). OFF
ABS SIGNAL
EBD SIGNAL Signal statusABS active
EBD active
ON
ABS system
EBD system
ABS not active
EBD not active OFF
ABS FAIL SIG
EBD FAIL SIG Fail signal statusABS fail
EBD fail
ON
ABS system
EBD system
ABS normal
EBD normal OFF
Diagnostic mode
Description
SELF DIAGNOSTIC RESULT Displays ABS actuator and electric unit (control unit) self-diagnosis results. DATA MONITOR Displays ABS actuator and electric unit (control unit) input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
Revision: May 2010 2011 Versa

BRC-20
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
SELF-DIAGNOSIS
Description
If an error is detected in the system
, the ABS warning lamp will turn on. In this case, perform self-diagnosis as
follows:
Operation Procedure
1. Turn ignition switch OFF.
2. Connect CONSULT-III to the data link connector.
3. Turn ignition switch ON.
4. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
5. After stopping the vehicle, with the engine running, t ouch “ABS”, “SELF-DIAG RESULTS” in order on the
CONSULT-III screen.
6. The self-diagnostic results are displayed. (If neces sary, the self-diagnostic results can be printed out by
touching “PRINT”.)
• When “NO DTC IS DETECTED” is displayed, check the ABS warning lamp.
7. Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioning component.
8. Start engine and drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
CAUTION:
• When a wheel sensor “short-circuit” is detected, if the vehicle is not driven at 30 km/h (19 MPH) for at least 1 minute, the ABS warn ing lamp will not turn off even if the malfunction is repaired.
9. Turn ignition switch OFF to prepare for erasing the memory.
10. Start the engine and touch “ABS”, “SELF-DIAG RESULTS”, “ERASE” in order on the CONSULT-III screen
to erase the error memory.
If “ABS” is not indicated, go to GI-36, "
CONSULT-III Data Link Connector (DLC) Circuit".
CAUTION:
If the error memory is not erased, re -conduct the operation from step 5.
11. For the final inspection, drive at approximately 30 km/h (19 MPH) or more for approximately 1 minute and
confirm that the ABS warning lamp is off.
Display Item List
FUNCTION TEST Conducted by CONS ULT-III instead of a technician to determine whether each system is "OK" or "NG".
ECU IDENTIFICATION ABS actuator and electric unit (control unit) part number can be read. Diagnostic mode
Description
Revision: May 2010 2011 Versa

BRC-22
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
Note 1: If wheel sensor 2 for each wheel is indicated, check ABS actuator and electric unit (control unit) power supply voltage
in addition
to wheel sensor circuit check.
Note 2: If multiple malfunctions are detected including CAN communication line [U1000], perform diagnosis for CAN communication line
first.
DATA MONITOR
Operation Procedure
1. After turning OFF the ignition switch, connect CONSULT-III to the data link connector.
2. Touch “ABS”, “DATA MONITOR” in order on the CONSULT-III screen. If “ABS” is not indicated, go to GI-36, "
CONSULT-III Data Link Connector (DLC) Circuit".
3. Return to the SELECT MONITOR ITEM screen, and touch “ECU INPUT SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU”. Refer to the following information.
4. When “START” is touched, the data monitor screen is displayed.
Display Item List
MAIN RELAY
[ C 111 4 ] ABS actuator relay or circuit malfunction. BRC-27, "Actuator Mo-
tor, Motor Relay, and Cir-
cuit Inspection"
CAN COMM CIRCUIT
[U1000]• CAN communication line is open or shorted.
• ABS actuator and electric unit (c
ontrol unit) internal malfunction
• Battery voltage for ECM is suddenly interrupted for approxi-
mately 0.5 second or more. BRC-29, "CAN Commu-
nication System Inspec-
tion" (Note 2)
Self-diagnostic item
Malfunction detecting condition Check system
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
FR RH SENSOR
(km/h, MPH) ××× Wheel speed calculated by front RH
wheel sensor signal is displayed.
FR LH SENSOR
(km/h, MPH) ×××
Wheel speed calculated by front LH
wheel sensor signal is displayed.
RR RH SENSOR
(km/h, MPH) ××× Wheel speed calculated by rear RH
wheel sensor signal is displayed.
RR LH SENSOR
(km/h, MPH) ××× Wheel speed calculated by rear LH
wheel sensor signal is displayed.
BATTERY VOLT
(V) ××× Voltage supplied to ABS actuator
and electric unit (control unit) is dis-
played.
STOP LAMP SW
(ON/OFF) ××× Stop lamp switch (ON/OFF) status is
displayed.
ABS WARN LAMP
(ON/OFF) –
×× ABS warning lamp (ON/OFF) status
is displayed.
FR LH IN SOL
(ON/OFF) –
×× Front LH IN ABS so
lenoid (ON/OFF)
status is displayed.
FR LH OUT SOL
(ON/OFF) –
×× Front LH OUT ABS solenoid (ON/
OFF) status is displayed.
FR RH IN SOL
(ON/OFF) –
×× Front RH IN ABS solenoid (ON/
OFF) status is displayed.
FR RH OUT SOL
(ON/OFF) –
×× Front RH OUT ABS solenoid (ON/
OFF) status is displayed.
RR LH IN SOL
(ON/OFF) –
×× Rear LH IN ABS solenoid (ON/OFF)
status is displayed.
RR LH OUT SOL
(ON/OFF) –
×× Rear LH OUT ABS solenoid (ON/
OFF) status is displayed.
Revision: May 2010
2011 Versa

TROUBLE DIAGNOSISBRC-23
< SERVICE INFORMATION > [ABS]
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× : Applicable
–: Not applicable
ACTIVE TEST
CAUTION:
• Do not perform active test while driving.
• Make sure to completely bl eed air from the brake system.
• The ABS and brake warning lamps tu rn on during the active test.
Operation Procedure
1. Connect the CONSULT-III to the data link connector and start the engine.
2. Touch “ABS”.
If “ABS” is not indicated, go to GI-36, "
CONSULT-III Data Link Connector (DLC) Circuit".
3. Touch “ACTIVE TEST”.
4. The SELECT TEST ITEM screen is displayed.
5. Touch necessary test item.
6. With the “MAIN SIGNALS” display selected, touch “START”.
7. The Active Test screen will be displayed, so conduct the following test.
Solenoid Valve Operation Chart
NOTE:
• If active test is performed with brake pedal depressed, pedal stroke may change. This is normal.
• “TEST IS STOPPED” is displayed approx imately 10 seconds after operation starts.
• After “TEST IS STOPPED” is displayed, to perform test again, repeat Step 6.
ABS Motor
Touch “ON” and “OFF” on the screen. Check that ABS motor relay operates as shown in table below.
RR RH IN SOL
(ON/OFF)–
×× Rear RH IN ABS solenoid (ON/OFF)
status is displayed.
RR RH OUT SOL
(ON/OFF) –
×× Rear RH OUT ABS solenoid (ON/
OFF) status is displayed.
MOTOR RELAY
(ON/OFF) –
×× ABS motor relay signal (ON/OFF)
status is displayed.
ACTUATOR RLY
(ON/OFF) –
×× ABS actuator relay signal (ON/OFF)
status is displayed.
ABS FAIL SIG
(ON/OFF) ––
×ABS fail signal (ON/OFF) status is
displayed.
EBD FAIL SIG
(ON/OFF) ––
×EBD fail signal (ON/OFF) status is
displayed.
EBD SIGNAL
(ON/OFF) ––
×EBD operation (ON/OFF) status is
displayed.
ABS SIGNAL
(ON/OFF) ––
×ABS operation (ON/OFF) status is
displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
TEST ITEM CONDITIONJUDGEMENT
FR RH SOL
FR LH SOL
RR RH SOL
RR LH SOL Ignition switch is turned ON.Brake fluid pressure control operation
IN SOL OUT SOL
UP (Increase): OFF OFF
KEEP (Hold): ON OFF
DOWN (Decrease): ON ON
Revision: May 2010 2011 Versa

BRC-24
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
NOTE:
• If active test is performed with brake pedal depr
essed, pedal stroke may change. This is normal.
• “TEST IS STOPPED” is displayed approximately 10 seconds after operation starts.
Operation ONOFF
ABS actuator relay ONON
ABS motor relay ONOFF
Revision: May 2010 2011 Versa

BRC-26
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
Check continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor
harness connector.
OK or NG
OK >> Replace the ABS actuator and electric unit (control unit). Refer to BRC-36, "Removal and Installa-
tion".
NG >> Repair the circuit.
ABS Control Unit InspectionINFOID:0000000005928447
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-36, "Removal and Installa-
tion".
NO >> Inspection End.
Solenoid Valve System InspectionINFOID:0000000005928448
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
Wheel sensor ABS actuator and
electric unit (control unit) Wheel sensor
Continuity
Connector Terminals Connector Terminals
Front LH
E335
E51 1
Ye s
16
2
Front RH 10
E52 1
92
Rear LH 17
B123 1
62
Rear RH 19
B124 1
82
Self-diagnosis results
CONTROLLER FAILURE
Self-diagnosis 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
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
BRC-27
< SERVICE INFORMATION > [ABS]
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2.CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector E33.
2. Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECKING SOLENOID POWER AND GROUND
1. Check voltage between ABS actuator and electric unit (control unit) harness connector E33 and body ground.
2. Check resistance between ABS actuator and electric unit (con- trol unit) harness connector E33 and body ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-36, "
Removal and Installation".
NG >> Repair the circuit.
Actuator Motor, Motor Relay, and Circuit InspectionINFOID:0000000005928449
INSPECTION PROCEDURE
1.CHECKING SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector E33.
2. Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECKING ABS MOTOR AND MOTOR RELAY POWER SYSTEM ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
3 — 12V
WFIA0499E
ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
4—0 Ω
WFIA0500E
Self-diagnosis results
PUMP MOTORMAIN RELAY
Revision: May 2010 2011 Versa

BRC-28
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
1. Check voltage between ABS actuator and electric unit (control
unit) harness connector E33 and ground.
2. Check resistance between ABS actuator and electric unit (con- trol unit) connector E33 and ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-36, "
Removal and Installation".
NG >> Repair the circuit.
ABS Control Unit Power and Ground Systems InspectionINFOID:0000000005928450
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (control unit) connector E33.
2. Check the terminals for deformati on, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.ABS CONTROL UNIT POWER A ND GROUND CIRCUIT INSPECTION
Measure the voltage and continuity between the ABS act uator and electric unit (control unit) harness connec-
tor E33 and ground. ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
2 — 12V
WFIA0501E
ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
1—0 Ω
WFIA0502E
Self-diagnosis results
BATTERY VOLTAGE
Signal name ABS actuator and electric unit
(control unit) harness con- nector E33 Body
ground Measured value
Power supply 2
— Battery voltage (Approx. 12V)
3
Revision: May 2010 2011 Versa

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
BRC-29
< SERVICE INFORMATION > [ABS]
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OK or NG
OK >> Check the battery for loose terminals, low voltage, etc. Repair as necessary.
NG >> Repair the circuit.
CAN Communication System InspectionINFOID:0000000005928451
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuat or and electric unit (control unit) connector and check
the terminals for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or
replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is "CAN COMM CIRCUIT" displayed in self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to LAN-17, "Trouble Diagnosis Flow Chart".
NO >> Connector terminal is l oose, damaged, open, or shorted.
Ground
1
—Continuity should exist.
4
Revision: May 2010 2011 Versa