2010 NISSAN LATIO relay

BRC-1
BRAKES
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SECTION BRC
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BRC
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CONTENTS
BRAKE CONTROL SYSTEM
ABS
SERVICE INFORMATION .. ..........................
3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
Precaution for Brake System ....................................4
Precaution for Brake Control .....................................4
Precaution for CAN System ................................ ......4
PREPARATION ...................................................6
Special Service Tool ........................................... ......6
Commercial Service Tool ..........................................6
SYSTEM DESCRIPTION .....................................7
System Component ............................................. ......7
ABS Function ............................................................7
EBD Function ............................................................7
Fail-Safe Function .....................................................7
Hydraulic Circuit Diagram .........................................8
CAN COMMUNICATION ................................ .....9
System Description ............................................. ......9
TROUBLE DIAGNOSIS .....................................10
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ......................................................
10
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
13
Schematic ...............................................................14
Wiring Diagram - ABS - ...........................................15
Basic Inspection .................................................. ....18
Warning Lamp and Indicator Timing .......................19
Control Unit Input/Output Signal Standard ..............19
CONSULT-III Function (ABS) .................................20
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS ..................................................
26
Wheel Sensor System ......................................... ....26
ABS Control Unit Inspection ....................................27
Solenoid Valve System Inspection ..........................27
Actuator Motor, Motor Relay, and Circuit Inspec-
tion ....................................................................... ....
28
ABS Control Unit Power and Ground Systems In-
spection ...................................................................
29
CAN Communication System Inspection .................30
TROUBLE DIAGNOSES FOR SYMPTOMS .....31
ABS Works Frequently ............................................31
Unexpected Pedal Action ........................................31
Long Stopping Distance ..........................................32
ABS Does Not Work ................................................32
Pedal Vibration or ABS Operation Noise .................32
WHEEL SENSORS ...........................................34
Removal and Installation ..................................... ....34
SENSOR ROTOR ..............................................36
Removal and Installation .........................................36
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ..................................................................
37
Removal and Installation .........................................37
VDC/TCS/ABS
SERVICE INFORMATION .. .........................
39
PRECAUTIONS .................................................39
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
39
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ...................................
39
Precaution for Brake System ...................................40
Precaution for Brake Control ...................................40
Precaution for CAN System .....................................41
PREPARATION .................................................42
Special Service Tool ................................................42
Commercial Service Tool ........................................42
Revision: January 20102010 Versa

BRC-2
SYSTEM DESCRIPTION ................................ ...43
System Component ............................................. ...43
ABS Function ....................................... ...................43
EBD Function ...................................................... ...43
TCS Function ..........................................................44
VDC Function .........................................................44
Wheel Sensors .......................................................44
Fail-Safe Function ..................................................44
Hydraulic Circuit Diagram .......................................45
CAN COMMUNICATION ...................................46
System Description .................................................46
TROUBLE DIAGNOSIS .....................................47
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ...
47
Component Parts and Harness Connector Loca-
tion ..........................................................................
50
Schematic ...............................................................51
Wiring Diagram - VDC - ..........................................52
Basic Inspection .....................................................56
Warning Lamp and Indicator Timing .......................57
Control Unit Input/Output Signal Standard .............57
CONSULT-III Function (ABS) .................................60
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS ............................................... ...
67
Wheel Sensor System Inspection ...........................67
Engine System Inspection ................................... ...68
ABS/TCS/VDC Control Unit Inspection ..................68
Steering Angle Sensor System Inspection .......... ...69
Yaw Rate/Side/Decel G Sensor System Inspec-
tion ....................................................................... ...
70
Solenoid and VDC Change-Over Valve System
Inspection ...............................................................
72
Actuator Motor, Motor Relay, and Circuit Inspec-
tion ....................................................................... ...
73
Stop Lamp Switch System Inspection ....................74
ABS/TCS/VDC Control Unit Power and Ground
Systems Inspection .............................................. ...
75
Brake Fluid Level Switch System Inspection ..........76
Pressure Sensor System Inspection .......................77
Transmission Range Switch System Inspection .. ...78
CAN Communication System Inspection ................79
Component Inspection ............................................79
TROUBLE DIAGNOSES FOR SYMPTOMS .....81
ABS Works Frequently ............................................81
Unexpected Pedal Action ..................................... ...81
Long Stopping Distance ..........................................82
ABS Does Not Work ...............................................82
Pedal Vibration or ABS Op eration Noise ................82
ABS Warning Lamp Does Not Come On When Ig-
nition Switch Is Turned On ................................... ...
83
ABS Warning Lamp Stays On When Ignition
Switch Is Turned On ............................................ ...
83
Vehicle Jerks During TCS/VDC Activation ..............84
ON-VEHICLE SERVICE ....................................85
Adjustment of Steering Angle Sensor Neutral Po-
sition ..................................................................... ...
85
WHEEL SENSORS ............................................86
Removal and Installation .........................................86
SENSOR ROTOR ........................................... ...88
Removal and Installation .........................................88
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ................................................................ ...
89
Removal and Installation .........................................89
STEERING ANGLE SENSOR ........................ ...91
Removal and Installation .........................................91
G SENSOR ........................................................92
Removal and Installation .........................................92
Revision: January 20102010 Versa

BRC-20
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
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:0000000005397039
CONSULT-III can display each diagnostic item us
ing the diagnostic test modes shown following.
Monitor itemDisplay 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-26, "
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-29, "
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-18, "
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-28, "
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-28, "
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-27, "
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 ac tuator 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: January 20102010 Versa

BRC-22
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
Self-diagnostic item
Malfunction detecting condition Check system
RR RH SENSOR-1
[C1101] Circuit of rear RH wheel sensor is open.
BRC-26, "
Wheel Sensor
System" (Note 1)
RR LH SENSOR-1
[C1102]
Circuit of rear LH wheel sensor is open.
FR RH SENSOR-1
[C1103] Circuit of front RH wheel sensor is open.
FR LH SENSOR-1
[C1104] Circuit of front LH wheel sensor is open.
RR RH SENSOR-2
[C1105] When the circuit in the rear RH wheel sensor is short-circuited or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
RR LH SENSOR-2
[C1106] When the circuit in the rear LH wheel sensor is short-circuited or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
FR RH SENSOR-2
[C1107] When the circuit in the front RH wheel sensor is short-circuited or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
FR LH SENSOR-2
[C1108] When the circuit in the front LH wheel sensor is short-circuited or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
ABS SENSOR
[ABNORMAL SIGNAL]
[ C 111 5 ] Wheel sensor input is abnormal.
BATTERY VOLTAGE
[ABNORMAL]
[C1109] ABS actuator and electric unit (control unit) power voltage is too
low. BRC-29, "
ABS Control
Unit Power and Ground
Systems Inspection"
CONTROLLER FAILURE
[ C 111 0 ]
Internal malfunction of ABS actuator
and electric unit (control unit)BRC-27, "ABS Control
Unit Inspection"
PUMP MOTOR
[ C 1111 ] During actuator motor operation with ON, when actuator motor
turns OFF or when control line for actuator motor relay is open.
BRC-28, "Actuator Mo-
tor, Motor Relay, and Cir-
cuit Inspection"During actuator motor operation with OFF, when actuator motor
turns ON or when control line for relay is shorted to ground.
FR LH IN ABS SOL
[C1120] Circuit of front LH IN ABS solenoid
is open or shorted, or control
line is open or shorted to power supply or ground.
BRC-27, "
Solenoid Valve
System Inspection"
FR LH OUT ABS SOL
[C1121]Circuit of front LH OUT ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
FR RH IN ABS SOL
[C1122] Circuit of front RH IN ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
FR RH OUT ABS SOL
[C1123] Circuit of front RH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.
RR LH IN ABS SOL
[C1124] Circuit of rear LH IN ABS solenoid
is open or shorted, or control
line is open or shorted to power supply or ground.
RR LH OUT ABS SOL
[C1125] Circuit of rear LH OUT ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
RR RH IN ABS SOL
[C1126] Circuit of rear RH IN ABS solenoid
is open or shorted, or control
line is open or shorted to power supply or ground.
RR RH OUT ABS SOL
[C1127] Circuit of rear RH OUT ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
Revision: January 20102010 Versa

TROUBLE DIAGNOSISBRC-23
< SERVICE INFORMATION > [ABS]
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Note 1: If wheel sens or 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, c onnect 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-28, "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 (control unit) internal malfunction
• Battery voltage for ECM is suddenly interrupted for approxi-
mately 0.5 second or more. BRC-30, "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 solenoid (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: January 20102010 Versa

BRC-24
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
×
: Applicable
–: Not applicable
ACTIVE TEST
CAUTION:
• Do not perform active test while driving.
• Make sure to completely bleed 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 depr essed, pedal stroke may change. This is normal.
• “TEST IS STOPPED” is displayed approximately 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: January 20102010 Versa

TROUBLE DIAGNOSISBRC-25
< SERVICE INFORMATION > [ABS]
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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.
OperationONOFF
ABS actuator relay ONON
ABS motor relay ONOFF
Revision: January 20102010 Versa

BRC-28
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2.CONNECTOR INSPECTION
1. Disconnect 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.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-37, "
Removal and Installation".
NG >> Repair the circuit.
Actuator Motor, Motor Rela y, and Circuit InspectionINFOID:0000000005397043
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 deformati on, 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: January 20102010 Versa