DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-31
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT Function (ABS)INFOID:0000000012430842
APPLICATION ITEMS
CONSULT can display each diagnostic item us ing the following direct diagnostic modes.
ECU IDENTIFICATION
ABS actuator and electric unit (control unit) part number is displayed.
SELF DIAGNOSTIC RESULT
Operation Procedure
1. Before performing the “Self Diagnostic Result”, st art engine and drive vehicle at 30 km/h (19 MPH) or
more for approximately 1 minute.
How To Erase Self Diagnostic Result
1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make sure t hat the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
NOTE:
• When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning lamp,
SLIP indicator lamp and brake warning lamp will not turn OFF even when the system is normal, unless
the vehicle is driven at approximately 30 km/h (19 MPH) or more for approximately 1 minute.
• Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake fluid
level switch operation (when brake fluid is insufficient).
• VDC OFF switch should not stay in ON position.
Display Item List
Refer to BRC-43, "DTC Index".
DATA MONITOR
Direct Diagnostic Mode Description
ECU Identification The ABS actuator and electric unit (control unit) part number is displayed.
Self Diagnostic Result The ABS actuator and electric unit (control unit) self diagnostic results are displayed.
Data Monitor The ABS actuator and electric unit (control unit) input/output data is displayed in real time.
Active Test The ABS actuator and electric unit (control unit) activates outputs to test components.
Work support The settings for ABS actuator and electric unit (control unit) functions can be changed.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
FR LH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by front wheel
sensor LH signal is displayed.
FR RH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by front wheel
sensor RH signal is displayed.
RR LH SENSOR
(km/h, mph) ×× ×
Wheel speed (km/h, mph) calculated by rear wheel
sensor LH signal is displayed.
RR RH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by rear wheel
sensor RH signal is displayed.
Revision: August 2015
2016 Versa Note
cardiagn.com
BRC-32
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
FR RH IN SOL
(On/Off) –
×× Front RH IN ABS solenoid (On/Off) status is dis-
played.
FR RH OUT SOL
(On/Off) –
×× Front RH OUT ABS solenoid (On/Off) status is dis-
played.
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 dis-
played.
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 dis-
played.
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 dis-
played.
EBD WARN LAMP
(On/Off) ––
×Brake warning lamp (On/Off) status is displayed.
STOP LAMP SW
(On/Off) ×× ×
Stop lamp switch (On/Off) status is displayed.
MOTOR RELAY
(On/Off) –
×× ABS motor relay signal (On/Of f) status is displayed.
ACTUATOR RLY
(On/Off) –
×× ABS actuator relay signal (On/ Off) status is displayed.
ABS WARN LAMP
(On/Off) –
×× ABS warning lamp (On/Off) status is displayed.
OFF LAMP
(On/Off) –
×× VDC OFF Lamp (On/Off) status is displayed.
OFF SW ×× × VDC OFF Switch (On/Off) position is displayed
SLIP/VDC LAMP
(On/Off) –
×× SLIP indicator lamp (On/Off) status is displayed.
BATTERY VOLT
(V) ×× × Voltage (V) supplied to ABS actuator and electric unit
(control unit) is displayed.
GEAR
(1, 2, 3, 4, 5) ×× × Gear position (1, 2, 3, 4, 5) judged by transmission
range switch signal is displayed.
SLCT LVR POSI ×× × Curre
nt gear p
osition judged from current gear posi-
tion signal is displayed.
ENGINE SPEED ×× × Engine speed judged by CAN communication signal
is displayed.
YAW R AT E S E N
(d/s) ×× × Yaw rate (d/s) detected by yaw rate sensor is dis-
played.
R POSI SIG
(On/Off) ––
×Reverse shift position (On/Off) judged by transmis-
sion range switch signal.
N POSI SIG
(On/Off) ––
×Neutral position (On/Off) judged by transmission
range switch signal.
P POSI SIG
(On/Off) ––
×Park position (On/Off) judged by transmission range
switch signal.
CV1
(On/Off) ––
×Cut valve 1(On/Off) status is displayed.
CV2
(On/Off) ––
×Cut valve 2 (On/Off) status is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Revision: August 2015 2016 Versa Note
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DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-33
< SYSTEM DESCRIPTION > [VDC/TCS/ABS]
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× : Applicable
–: Not applicable
ACTIVE TEST MODE
CAUTION:
• Do not perform active test while driving vehicle.
• Make sure to completely bleed air from brake system.
• The active test cannot be performed with the ABS warning lamp, VDC OFF indicator lamp, SLIP indi-
cator lamp or brake warning lamp on.
• ABS warning lamp, VDC OFF indi cator lamp, SLIP indicator lamp and brake warning lamp turn on
during active test.
NOTE:
• When active test is performed while depressing the pedal, the pedal depression amount will change. This is normal.
• “TEST IS STOPPED” is displayed 10 seconds after operation start.
• After “TEST IS STOPPED” is displayed, to perform test again, touch BACK.
Test Item
ABS SOLENOID VALVE• Select “Up”, “Keep” and “Down”. Then use screen monitor to check that solenoid valve operates as shown in
the table below.
SV1
(On/Off) ––
×Suction valve 1(On/Off) status is displayed.
SV2
(On/Off) ––
×Suction valve 2 (On/Off) status is displayed.
ACCEL POS SIG
(%) ×
– ×Throttle valve open/close status judged by CAN com-
munication signal is displayed.
SIDE G-SENSOR
(m/s
2) ×
– ×Transverse acceleration detected by side G-sensor is
displayed.
STR ANGLE SIG
(deg) ×
– ×Steering angle detected by steering angle sensor is
displayed.
PRESS SENSOR
(bar) ×
– ×Brake pressure detected by pressure sensor is dis-
played.
EBD SIGNAL
(On/Off) ––
×EBD operation (On/Off) status is displayed.
ABS SIGNAL
(On/Off) ––
×ABS operation (On/Off) status is displayed.
TCS SIGNAL
(On/Off) ––
×TCS operation (On/Off) status is displayed.
VDC SIGNAL
(On/Off) ––
×VDC operation (On/Off) status is displayed.
EBD FAIL SIG
(On/Off) ––
×EBD fail signal (On/Off) status is displayed.
ABS FAIL SIG
(On/Off) ––
×ABS fail signal (On/Off) status is displayed.
TCS FAIL SIG
(On/Off) ––
×TCS fail signal (On/Off) status is displayed.
VDC FAIL SIG
(On/Off) ––
×VDC fail signal (On/Off) status is displayed.
CRANKING SIG
(On/Off) ––
×The input state of the key SW START position signal
is displayed.
FLUID LEV SW
(On/Off) ×
– ×Brake fluid level switch (On/Off) status is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Revision: August 2015 2016 Versa Note
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ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-37
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
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RR RH OUT SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode)
On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
RR LH IN SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode)
On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
RR LH OUT SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode)
On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
EBD WARN LAMP EBD warning lamp
(Note 2) When EBD warning lamp is ON
On
When EBD warning lamp is OFF Off
STOP LAMP SW Brake pedal operation When brake pedal is depressed
On
When brake pedal is not depressed Off
MOTOR RELAY Motor and motor relay operation When the motor relay and motor are op-
erating
On
When the motor relay and motor are not
operating Off
ACTUATOR RLY Actuator relay operation When the actuator relay is operating
On
When the actuator relay is not operating Off
ABS WARN LAMP ABS warning lamp
(Note 2) When ABS warning lamp is ON
On
When ABS warning lamp is OFF Off
OFF LAMP VDC OFF indicator lamp
(Note 2) When VDC OFF indicator lamp is ON
On
When VDC OFF indicator lamp is OFF Off
OFF SW VDC OFF switch When VDC OFF switch is in ON
On
When VDC OFF switch is in OFF Off
SLIP/VDC LAMP SLIP indicator lamp
(Note 2) When SLIP indicator lamp is ON
On
When SLIP indicator lamp is OFF Off
BATTERY VOLT Battery voltage supplied
to the ABS actuator
and electric unit (control unit) Ignition switch ON
10 – 16 V
GEAR Manual mode gear position determined by
TCM 1st gear
2nd gear
3rd gear
4th gear
5th gear 1
2
3
4
5
SLCT LVR POSI Selector lever position. Vehicle stoppedN/P
ENGINE SPEED With engine runn ingWhen engine running RPM
YAW RATE SEN Yaw rate detected by yaw rate/side G sensor When vehicle stop
Approx. 0 d/s
When vehicle turning -75 to 75 d/s
R POSI SIG Transmission range switch signal ON/OFF
condition CVT shift position = R position
On
CVT shift position = other than R position Off
Monitor item
Display content Data monitor
Condition Reference value in
normal operation
Revision: August 2015 2016 Versa Note
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ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-39
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
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Note 1: Confirm tire pressure is normal.
Note 2: On and off timing for warning lamps and indicator lamps.
•Refer to BRC-22, "
VDC/TCS/ABS : VDC Function".
•Refer to BRC-24, "
VDC/TCS/ABS : TCS Function".
•Refer to BRC-26, "
VDC/TCS/ABS : ABS Function".
•Refer to BRC-27, "
VDC/TCS/ABS : EBD Function".
Fail-safeINFOID:0000000012430844
VDC AND TCS FUNCTIONS
VDC warning lamp in combination meter turns ON when a malfunction occurs in system [ABS actuator and
electric unit (control unit)]. The control is su spended for VDC and TCS functions. However, ABS and EBD
functions operate normally.
ABS FUNCTION
ABS warning lamp and SLIP indicator lamp in combination meter turn ON when a malfunction occurs in sys-
tem [ABS actuator and electric unit (control unit)]. The control is suspended for VDC, TCS and ABS functions.
However, EBD functions operate normally.
EBD FUNCTION
ABS warning lamp, brake warning lamp and SLIP indicator lamp in combination meter turn ON when a mal-
function occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC,
TCS, ABS and EBD functions.
CRANKING SIG Crank operation Crank is active
On
Crank is inactive Off
FLUID LEV SW Brake fluid level switch When brake fluid level switch ON
On
When brake fluid level switch OFF Off
Monitor item
Display content Data monitor
Condition Reference value in
normal operation
Revision: August 2015 2016 Versa Note
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DIAGNOSIS AND REPAIR WORK FLOWBRC-53
< BASIC INSPECTION > [VDC/TCS/ABS]
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• Turn the ignition switch OFF → ON → OFF after erasing Self Diagnostic Result.
• Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
>> GO TO 7.
6.IDENTIFY MALFUNCTIONING SY STEM BY SYMPTOM DIAGNOSIS
Identify malfunctioning system based on sym ptom diagnosis and perform inspection.
Can the malfunctioning system be identified?
YES >> GO TO 7.
NO >> Check harness and connectors based on the information obtained in the interview. Refer to GI-42,
"Intermittent Incident".
7.FINAL CHECK
With CONSULT
1. Select “DATA MONITOR” of “ABS”
2. Check the reference values. Refer to BRC-36, "
Reference Value".
3. Recheck the symptom and check that the sympt om is not reproduced on the same conditions.
Is the symptom reproduced?
YES >> GO TO 3.
NO >> Inspection End.
Diagnostic Work SheetINFOID:0000000012430849
DESCRIPTION
• In general, customers have their own criteria for a pr oblem. Therefore, it is important to understand the
symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all
the information for the diagnosis, prepare the in terview sheet referring to the interview points.
• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
INTERVIEW SHEET SAMPLE
Interview sheet
Customer
name MR/MSRegistration
number
Initial year
registration
Vehicle type VIN
Storage date Engine/trac-
tion MotorMileage
km (Mile)
Symptom †
Does not operate ( ) function
† Warning lamp turns ON.
† or † or † †
† Other ( )
† Noise (Location: ) † Vibration (Location: )
† Other ( )
First occurrence † Recently † Other ( )
Frequency of occurrence † Always † Under a certain conditions of † Sometimes ( time(s)/day)
Climate con-
ditions †
Irrelevant
Weather † Fine † Cloud † Rain †Snow † Others ( )
Temperature † Hot †Warm † Cool † Cold † Temperature [Approx. °C ( °F)]
Relative humidity † High † Moderate † Low
Road conditions † Ordinary road † Highway † Mountainous road (uphill or downhill) †Rough road
Revision: August 2015 2016 Versa Note
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BRC-124
< DTC/CIRCUIT DIAGNOSIS >[VDC/TCS/ABS]
PARKING BRAKE SWITCH
PARKING BRAKE SWITCH
Component Function CheckINFOID:0000000012430903
1.CHECK PARKING BRAKE SWITCH OPERATION
Check that brake warning lamp in combination me ter turns ON/OFF when parking brake is actuated.
Is the inspection result normal?
YES >> Inspection End.
NO >> Proceed to diagnosis procedure. Refer to BRC-124, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000012430904
Regarding Wiring Diagram information, refer to BRC-44, "Wiring Diagram".
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect combination meter and parking brake switch connectors.
3. Check connectors and terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace as necessary.
2.CHECK PARKING BRAKE SWITCH
Check parking brake switch. Refer to BRC-125, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace parking brake switch. Refer to PB-9, "
Removal and Installation".
3.CHECK PARKING BRAKE SWITCH SIGNAL
With CONSULT.
1. Connect combination meter connector and parking brake switch connectors.
2. Turn ignition switch ON.
3. In “Data Monitor” select “PKB SW” and check parking brake switch signal.
Is the inspection result normal?
YES >> Refer to BRC-52, "Work Flow".
NO >> GO TO 4.
4.CHECK PARKING BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter and parking brake switch connectors.
3. Check continuity between combination meter connector M82 (type A) or M 24 (type B) terminal 10 and
parking brake switch connector M17 terminal 1.
Condition DATA MONITOR
Actuate parking brake On
Release parking brake Off
Combination meterParking brake switchContinuity
Connector TerminalConnector Terminal
M82 (type A) 10M17 1 Yes
M24 (type B)
Revision: August 2015 2016 Versa Note
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BRC-128
< DTC/CIRCUIT DIAGNOSIS >[VDC/TCS/ABS]
ABS WARNING LAMP
ABS WARNING LAMP
Component Function CheckINFOID:0000000012430909
1.CHECK ABS WARNING LAMP FUNCTION
Check that ABS warning lamp in combination meter turns ON for approximately 2 seconds after ignition switch
is turned ON.
Is the inspection result normal?
YES >> Inspection End.
NO >> Proceed to diagnosis procedure. Refer to BRC-128, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000012430910
1.PERFORM THE SELF DIAGNOSTIC
With CONSULT.
Perform “Self Diagnostic Result”.
Are any DTCs detected?
YES >> Refer to BRC-43, "DTC Index".
NO >> GO TO 2.
2.CHECK COMBINATION METER
Check if indication and operation of combination meter are normal. Refer to MWI-10, "
METER SYSTEM : Sys-
tem Description" (TYPE A) or MWI-61, "METER SYSTEM : System Description" (TYPE B).
Is the inspection result normal?
YES >> Replace ABS actuator and electr ic unit (control unit). Refer to BRC-144, "Removal and Installa-
tion".
NO >> Replace combination meter. Refer to MWI-54, "
Removal and Installation" (TYPE A) or MWI-115,
"Removal and Installation" (TYPE B).
Revision: August 2015 2016 Versa Note
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