ABS NISSAN VERSA 2006 Workshop Service Owner's Manual

CAN COMMUNICATION
BRC-7
[ABS]
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BRC
Revision: June 20062007 Versa
CAN COMMUNICATIONPFP:23710
System DescriptionEFS006LH
Refer to LAN-4, "SYSTEM DESCRIPTION" .

BRC-8
[ABS]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
TROUBLE DIAGNOSISPFP:00000
How to Perform Trouble Diagnoses for Quick and Accurate RepairEFS006LI
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 the 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 information, 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.
SEF 2 33 G
SEF 2 34 G

TROUBLE DIAGNOSIS
BRC-9
[ABS]
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BRC
Revision: June 20062007 Versa
WORK FLOW
WFIA0496E

BRC-10
[ABS]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
CLARIFY CONCERN

A customer's description of a vehicle concern may vary depend-
ing on the individual. It is important to clarify the customer's con-
cern.

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
SBR3 39 B
SFIA3264E

TROUBLE DIAGNOSIS
BRC-11
[ABS]
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BRC
Revision: June 20062007 Versa
Component Parts and Harness Connector LocationEFS006LJ
1. Front wheel sensor
LH E51
RH E522. Rear wheel sensor
LH B123
RH B1243. ABS actuator and electric unit (con-
trol unit) E33
4. Combination meter M24
WFIA0497E

BRC-12
[ABS]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
SchematicEFS006LK
WFWA0418E

TROUBLE DIAGNOSIS
BRC-13
[ABS]
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BRC
Revision: June 20062007 Versa
Wiring Diagram — ABS —EFS006LL
WFWA0419E

BRC-14
[ABS]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
WFWA0420E

TROUBLE DIAGNOSIS
BRC-15
[ABS]
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BRC
Revision: June 20062007 Versa
WFWA0421E

BRC-16
[ABS]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
WFWA0422E