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System ComponentINFOID:0000000005397026
ABS FunctionINFOID:0000000005397027
• The Anti-Lock NISSAN LATIO 2010 Service Repair Manual SYSTEM DESCRIPTIONBRC-7
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System ComponentINFOID:0000000005397026
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• The Anti-Lock](/manual-img/5/57358/w960_57358-896.png)
SYSTEM DESCRIPTIONBRC-7
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System ComponentINFOID:0000000005397026
ABS FunctionINFOID:0000000005397027
• The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoiding obsta-
cles during emergency braking.
• If the electrical system malfunctions, the Fail-Safe function is activated, t he ABS becomes inoperative and
the ABS warning lamp turns on.
• The electrical system can be diagnosed using CONSULT-III.
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
EBD FunctionINFOID:0000000005397028
• Electronic Brake Distribution is a function that detects subtle slippages between the front and rear wheels during braking, and it improves handling stability by elec tronically controlling the brake fluid pressure which
results in reduced rear wheel slippage.
• If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inopera- tive, and the ABS warning lamp and brake warning lamp are turned on.
• The electrical system can be diagnosed using CONSULT-III.
• During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting the vehicle, the brake pedal may vibrate or motor operating noises may be heard from the
engine compartment. This is normal due to the self check operation.
Fail-Safe FunctionINFOID:0000000005397029
CAUTION:
If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.
ABS/EBD SYSTEM
In case of an electrical malfunction with the ABS, the ABS warning lamp wi ll turn on. In case of an electrical
malfunction with the EBD system, the brake warni ng lamp and the ABS warning lamp will turn on.
The system will revert to one of the follo wing conditions of the Fail-Safe function.
1. For ABS malfunction, only the EBD is operative and t he condition of the vehicle is the same condition of
vehicles without ABS system.
WFIA0118E
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SYSTEM DESCRIPTION
2. For EBD malfunction, the EBD and ABS become inoperat
ive, and the condition of the vehicle is the same
as the condition of vehicles without ABS or EBD system.
Hydraulic Circuit DiagramINFOID:0000000005397030
SFIA3082E
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CAN COMMUNICATIONBRC-9
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CAN COMMUNICATION
System DescriptionINFOID:0000000005397031
Refer to LAN-7, "System Description".
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TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
How to Perform Trouble Diagnosis
for Quick and Accurate RepairINFOID:0000000005397032
INTRODUCTION
The ABS system has an electr NISSAN LATIO 2010 Service Repair Manual BRC-10
< SERVICE INFORMATION >[ABS]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
How to Perform Trouble Diagnosis
for Quick and Accurate RepairINFOID:0000000005397032
INTRODUCTION
The ABS system has an electr](/manual-img/5/57358/w960_57358-899.png)
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TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
How to Perform Trouble Diagnosis
for Quick and Accurate RepairINFOID:0000000005397032
INTRODUCTION
The ABS system has an electronic control unit to control major func-
tions. The control unit accepts input signals from sensors and con-
trols actuator operation. It is also important to check for air leaks in
the booster or brake and vacuum lines, lack of brake fluid, or other
malfunctions in the brake system.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent conditions are
caused by poor electrical connections or damaged wiring. In this
case, careful checking of suspicious circuits may help prevent the
replacement of good parts.
A visual check only may not find t he cause of the malfunction, so a
road test should be performed.
Before undertaking actual checks, take just a few minutes to talk with
a customer who approaches with an ABS complaint. The customer
is a very good source of informati on, especially for intermittent condi-
tions. Through the talks with the customer, find out what symptoms
are present and under what conditions they occur.
Start your diagnosis by looking for “conventional” malfunctions first.
This is one of the best ways to troubleshoot brake malfunctions on
an ABS equipped vehicle. Also check related Service Bulletins for
information.
SEF233G
SEF234G
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WORK FLOW
CLARIFY CONCERN
AWFIA0086GB
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• A customer's description of a vehicle concern may vary depending
on the individual. It is important to clarify the customer's concern.
• Ask the customer about what symptoms are present under what
conditions. Use this information to reproduce the symptom while
driving.
• It is also important to use the diagnosis sheet to understand what
type of symptoms the customer is experiencing.
EXAMPLE OF DIAGNOSIS SHEET
SBR339B
SFIA3264E
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Component Parts and Har ness Connector LocationINFOID:0000000005397033
1. Front wheel sensor
LH E18
RH E117 2. Rear wheel sensor
LH B123
RH B122 3. ABS actuator and electric unit (con-
trol unit) E33
4. Combination meter M24 5. Stop lamp switch E13
AWFIA0619GB
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Schematic
INFOID:0000000005397034
ABFWA0120GB
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