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F BRAKES

B
SECTION
BRAKE CONTROL SYSTEM C

E
CONTENTS
ABS Warning Lamp and Indicator Timing ...................... 21 . BRC
Control Unit Input/Output Signal Standard ............ 22 .
PRECAUTIONS ......................................................... 4
. REFERENCE VALUE FROM CONSULT-II ........ 22 .
Precautions for Supplemental Restraint System CONSULT-II Function (ABS) ................................. 24 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CONSULT-II BASIC OPERATION PROCEDURE
SIONER" ................................................................. 4
. ... 24
Precautions for Brake System ................................. 4 . SELF-DIAGNOSIS ............................................. 25 .
Precautions When Using CONSULT-II .................... 4 . H
DATA MONITOR ................................................ 27 .
CHECK POINTS FOR USING CONSULT-II ........ 4 . ACTIVE TEST .................................................... 29 .
Precautions for Brake Control ................................. 5 . TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
Precautions for CAN System .................................. 5 . ITEMS ....................................................................... 31
. I
Wiring Diagrams and Trouble Diagnosis ................. 6 . Wheel Sensor System Inspection .......................... 31 .
PREPARATION .......................................................... 7
. Engine System Inspection ..................................... 32 .
Special Service Tool ................................................ 7
. ABS Control Unit Inspection .................................. 33 . J
Commercial Service Tools ....................................... 7 . Actuator Motor, Motor Relay, and Circuit Inspection 33 ...
SYSTEM DESCRIPTION ........................................... 8 . Stop Lamp Switch System Inspection ................... 34 .
System Diagram ...................................................... 8
. ABS Control Unit Power and Ground Systems
ABS Function .......................................................... 8
. K
Inspection .............................................................. 35
.
EBD Function .......................................................... 8
. CAN Communication System Inspection ............... 36 .
Wheel Sensors ........................................................ 9
. TROUBLE DIAGNOSES FOR SYMPTOMS ........... 37 .
Fail-Safe Function ................................................... 9
. ABS Works Frequently .......................................... 37 . L
ABS/EBD SYSTEM .............................................. 9 . Unexpected Pedal Action ...................................... 38 .
Hydraulic Circuit Diagram ..................................... 10 . Long Stopping Distance ......................................... 39 .
CAN COMMUNICATION ..........................................11 . ABS Does Not Work .............................................. 39 . M
System Description ................................................11
. Pedal Vibration or ABS Operation Noise ............... 39 .
TROUBLE DIAGNOSIS ........................................... 12 . ABS Warning Lamp Does Not Come On When Igni-
How to Perform Trouble Diagnoses for Quick and tion Switch Is Turned On ....................................... 40 .
Accurate Repair .................................................... 12
. ABS Warning Lamp Stays On When Ignition Switch
INTRODUCTION ................................................ 12 . Is Turned On .......................................................... 40
.
WORK FLOW ..................................................... 13. WHEEL SENSORS .................................................. 41 .
CLARIFY CONCERN ......................................... 14 . Removal and Installation ....................................... 41 .
EXAMPLE OF DIAGNOSIS SHEET .................. 14 . SENSOR ROTOR .................................................... 42 .
Component Parts and Harness Connector Location 15 ... Removal and Installation ....................................... 42 .
Schematic ............................................................. 16
. REMOVAL .......................................................... 42.
Wiring Diagram -- ABS -- .................................... 17 . INSTALLATION .................................................. 42 .
Basic Inspection .................................................... 21
. ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)... 43
BRAKE FLUID LEVEL, FLUID LEAK, AND Removal and Installation ....................................... 43 .
BRAKE PAD INSPECTION ................................ 21 . REMOVAL .......................................................... 43.
POWER SYSTEM TERMINAL LOOSENESS INSTALLATION .................................................. 43 .
AND BATTERY INSPECTION ........................... 21 .
ABS WARNING LAMP INSPECTION ................ 21 .

Revision: July 2005 BRC-1 2005 Maxima
TCS/ABS Stop Lamp Switch System Inspection ....................75 .
ABS/TCS Control Unit Power and Ground Systems
PRECAUTIONS ........................................................ 45 . Inspection ...............................................................76
.
Precautions for Supplemental Restraint System CAN Communication System Inspection ...............77 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Component Inspection ...........................................77 .
SIONER" ................................................................ 45
. TCS ON/OFF SWITCH .......................................77 .
Precautions for Brake System ............................... 45 . TROUBLE DIAGNOSES FOR SYMPTOMS ............78 .
Precautions When Using CONSULT-II .................. 45 . ABS Works Frequently ...........................................78 .
CHECK POINTS FOR USING CONSULT-II ....... 45 . Unexpected Pedal Action .......................................79 .
Precautions for Brake Control ............................... 46 . Long Stopping Distance .........................................80 .
Precautions for CAN System ................................. 46 . ABS Does Not Work ..............................................80 .
Wiring Diagrams and Trouble Diagnosis ............... 47 . Pedal Vibration or ABS Operation Noise ...............80 .
PREPARATION ........................................................ 48 . ABS Warning Lamp Does Not Come On When Igni-
Special Service Tool .............................................. 48 . tion Switch Is Turned On ........................................81 .
Commercial Service Tools ..................................... 48 . ABS Warning Lamp Stays On When Ignition Switch
SYSTEM DESCRIPTION ......................................... 49 . Is Turned On ..........................................................81
.
System Diagram .................................................... 49 . Vehicle Jerks During TCS Activation .....................82 .
ABS Function ......................................................... 49
. WHEEL SENSORS ..................................................83 .
EBD Function ........................................................ 49. Removal and Installation ........................................83 .
TCS Function ......................................................... 49
. SENSOR ROTOR .....................................................84 .
Wheel Sensors ...................................................... 50 . Removal and Installation ........................................84 .
Fail-Safe Function ................................................. 50 . REMOVAL ...........................................................84
.
ABS/EBD SYSTEM ............................................ 50 . INSTALLATION ...................................................84 .
TCS SYSTEM ..................................................... 50 . ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...85
Hydraulic Circuit Diagram ...................................... 51 . Removal and Installation ........................................85 .
CAN COMMUNICATION .......................................... 52 . REMOVAL ...........................................................85
.
System Description ................................................ 52 . INSTALLATION ...................................................85 .
TROUBLE DIAGNOSIS ........................................... 53 .
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ..................................................... 53.
VDC/TCS/ABS
INTRODUCTION ................................................ 53 . PRECAUTIONS ........................................................87.
WORK FLOW ..................................................... 54 . Precautions for Supplemental Restraint System
CLARIFY CONCERN ......................................... 55 . (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
EXAMPLE OF DIAGNOSIS SHEET ................... 55 . SIONER" ................................................................87
.
Component Parts and Harness Connector Location 56 ... Precautions for Brake System ...............................87 .
Schematic .............................................................. 57
. Precautions When Using CONSULT-II ..................87 .
Wiring Diagram -- TCS -- .................................... 58 . CHECK POINTS FOR USING CONSULT-II .......87 .
Basic Inspection .................................................... 62. Precautions for Brake Control ................................88 .
BRAKE FLUID LEVEL, FLUID LEAK, AND Precautions for CAN System .................................88 .
BRAKE PAD INSPECTION ................................ 62 . Wiring Diagrams and Trouble Diagnosis ................89 .
POWER SYSTEM TERMINAL LOOSENESS PREPARATION ........................................................90.
AND BATTERY INSPECTION ............................ 62 . Special Service Tool ...............................................90
.
ABS WARNING LAMP AND SLIP INDICATOR Commercial Service Tools .....................................90 .
LAMP INSPECTION ........................................... 62 . SYSTEM DESCRIPTION ..........................................91 .
Warning Lamp and Indicator Timing ...................... 62 . System Components ..............................................91 .
Control Unit Input/Output Signal Standard ............. 63 . ABS Function .........................................................91
.
REFERENCE VALUE FROM CONSULT-II ........ 63 . EBD Function .........................................................91
.
CONSULT-II Function (ABS) ................................. 65 . TCS Function .........................................................92
.
CONSULT-II BASIC OPERATION PROCEDURE VDC Function .........................................................92
.
... 65 Wheel Sensors .......................................................93
.
SELF-DIAGNOSIS ............................................. 66 . Fail-Safe Function ..................................................93
.
DATA MONITOR ................................................. 68 . ABS/EBD SYSTEM .............................................93 .
ACTIVE TEST .................................................... 70 . VDC/TCS SYSTEM ............................................93 .
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC Hydraulic Circuit Diagram ......................................94 .
ITEMS ....................................................................... 72
. CAN COMMUNICATION ..........................................95 .
Wheel Sensor System Inspection .......................... 72 . System Description ................................................95.
Engine System Inspection ..................................... 73 . TROUBLE DIAGNOSIS ...........................................96 .
ABS/TCS Control Unit Inspection .......................... 74 . How to Perform Trouble Diagnoses for Quick and
Actuator Motor, Motor Relay, and Circuit Inspection 74 ... Accurate Repair ...................................................

Revision: July 2005 BRC-2 2005 Maxima
INTRODUCTION ................................................ 96 . Systems Inspection ............................................. 127 .
WORK FLOW ..................................................... 97 . Brake Fluid Level Switch System Inspection ....... 128 . A
CLARIFY CONCERN ......................................... 98 . CAN Communication System Inspection ............. 128 .
EXAMPLE OF DIAGNOSIS SHEET .................. 98 . Component Inspection ......................................... 129 .
Component Parts and Harness Connector Location 99 ... VDC OFF SWITCH .......................................... 129 . B
Schematic ........................................................... 100
. TROUBLE DIAGNOSES FOR SYMPTOMS ......... 130 .
Wiring Diagram -- VDC -- .................................. 101 . ABS Works Frequently ........................................ 130 .
Basic Inspection .................................................. 107. Unexpected Pedal Action .................................... 131 .
BRAKE FLUID LEVEL, FLUID LEAK, AND Long Stopping Distance ....................................... 132 . C
BRAKE PAD INSPECTION .............................. 107 . ABS Does Not Work ............................................ 132 .
POWER SYSTEM TERMINAL LOOSENESS Pedal Vibration or ABS Operation Noise ............. 132 .
AND BATTERY INSPECTION ......................... 107 . ABS Warning Lamp Does Not Come On When Igni- D
ABS WARNING LAMP, SLIP INDICATOR LAMP tion Switch Is Turned On ..................................... 133 .
AND VDC OFF INDICATOR LAMP INSPECTION 107 . ABS Warning Lamp Stays On When Ignition Switch
Warning Lamp and Indicator Timing ................... 107 . Is Turned On ........................................................ 133 . E
Control Unit Input/Output Signal Standard .......... 108 . Vehicle Jerks During TCS/VDC Activation .......... 134 .
REFERENCE VALUE FROM CONSULT-II ...... 108 . ON-VEHICLE SERVICE ......................................... 135 .
CONSULT-II Function (ABS) ................................ 111 . Adjustment of Steering Angle Sensor Neutral Posi-
CONSULT-II BASIC OPERATION PROCEDURE tion ....................................................................... 135
. BRC
.. 111 WHEEL SENSORS ................................................ 136 .
SELF-DIAGNOSIS ............................................112 . Removal and Installation ..................................... 136 .
DATA MONITOR ...............................................115 . SENSOR ROTOR .................................................. 137 . G
ACTIVE TEST ...................................................117 . Removal and Installation ..................................... 137 .
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC REMOVAL ........................................................ 137 .
ITEMS .....................................................................119
. INSTALLATION ................................................ 137 . H
Wheel Sensor System Inspection ........................119 . ACTUATOR AND ELECTRIC UNIT (ASSEMBLY). 138
Engine System Inspection ................................... 120 . Removal and Installation ..................................... 138 .
ABS/TCS/VDC Control Unit Inspection ............... 121 . REMOVAL ........................................................ 138 .
I
Steering Angle Sensor System Inspection .......... 121 . INSTALLATION ................................................ 138 .
Yaw Rate/Side/Decel G Sensor System Inspection 122 . STEERING ANGLE SENSOR ............................... 140 .
Solenoid and VDC Change-Over Valve System Removal and Installation ..................................... 140 .
Inspection ............................................................ 124
. G SENSOR ............................................................. 141 . J
Actuator Motor, Motor Relay, and Circuit Inspection 125 . Removal and Installation ..................................... 141 .
Stop Lamp Switch System Inspection ................. 126 . REMOVAL ........................................................ 141 .
ABS/TCS/VDC Control Unit Power and Ground INSTALLATION ................................................ 141 . K

Revision: July 2005 BRC-3 2005 Maxima
PRECAUTIONS
[ABS]
PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EFS00636

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Brake System EFS004E8

CAUTION:
q Recommended fluid is brake fluid "DOT 3".
q Never reuse drained brake fluid.
q Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.
q To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.
q Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic
system.
q Use flare nut wrench when removing and installing brake
tube.
q If a brake fluid leak is found, the part must be disassembled
without fail. Then it has to be replaced with a new one if a
defect exists.
q Turn the ignition switch OFF and remove the connector of
the ABS actuator control unit or the battery terminal before
performing the work.
q Always torque brake lines when installing.
q Burnish the brake contact surfaces after refinishing or SBR686C
replacing rotors, after replacing pads, or if a soft pedal
occurs at very low mileage.
Refer to BR-28, "Brake Burnishing" (front disc brake) or BR-35, "Brake Burnishing" (Rear disc
brake).
WARNING:
q Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
Precautions When Using CONSULT-II EFS004E9

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
CHECK POINTS FOR USING CONSULT-II
1. Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?
q If YES, GO TO 2.

Revision: July 2005 BRC-4 2005 Maxima
PRECAUTIONS
[ABS]
q If NO, GO TO 5.
2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis A
results?
q If YES, GO TO 3.

q If NO, GO TO 4. B
3. Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.
4. Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communica-
tion. Therefor, erase the self-diagnosis results. C
5. Diagnose CAN communication system. Refer to LAN-7, "CAN COMMUNICATION" .
Precautions for Brake Control EFS004EA D
q During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
q Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from E
engine compartment. This is a normal status of operation check.
q Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads. BRC
q When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnosis. Besides electrical system inspection, check booster operation, brake fluid level, and fluid leaks. G
q If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.
q If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or H
error.
q If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits or improper wiring. I
Precautions for CAN System EFS004EB

q Do not apply voltage of 7.0V or higher to terminal to be measured.
J
q Maximum open terminal voltage of tester in use must be less than 7.0V.
q Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.
q Area to be repaired must be soldered and wrapped with tape. K
Make sure that fraying of twisted wire is within 110 mm (4.33 in).

PKIA0306E

q Do not make a bypass connection to repaired area. (If the circuit
is bypassed, characteristics of twisted wire will be lost.)

PKIA0307E

Revision: July 2005 BRC-5 2005 Maxima
PRECAUTIONS
[ABS]
Wiring Diagrams and Trouble Diagnosis EFS004EC

When you read wiring diagrams, refer to the following:
q GI-13, "How to Read Wiring Diagrams"
q PG-4, "POWER SUPPLY ROUTING CIRCUIT"
When you perform trouble diagnosis, refer to the following:
q GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"
q GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident"

Revision: July 2005 BRC-6 2005 Maxima
PREPARATION
[ABS]
PREPARATION PFP:00002
A
Special Service Tool EFS004ED

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number B
(Kent-Moore No.) Description
Tool name
(J-45741) Checking operation of ABS active wheel sen- C
ABS active wheel sensor tester sor

WFIA0101E
E
Commercial Service Tools EFS004EE

Tool name Description
BRC
1. Flare nut crowfoot Removing and installing brake piping
2. Torque wrench a: 10mm (0.39 in)/12mm (0.47 in)

S-NT360
H

Revision: July 2005 BRC-7 2005 Maxima
SYSTEM DESCRIPTION
[ABS]
SYSTEM DESCRIPTION PFP:00000

System Diagram EFS004EF

WFIA0118E

ABS Function EFS004EG

q 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
obstacles.
q If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative and
the ABS warning lamp turns on.
q The electrical system can be diagnosed using CONSULT-II.
q During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
q Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from
engine compartment. This is a normal status of operation check.
q 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 Function EFS004EH

q Electronic Brake Distribution is a function that detects subtle slippages between the front and rear wheels
during braking, and it improves handling stability by electronically controlling the brake fluid pressure
which results in reduced rear wheel slippage.
q If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inoper-
ative, and the ABS warning lamp and BRAKE warning lamp are turned on.
q The electrical system can be diagnosed using CONSULT-II.
q During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
q Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from
engine compartment. This is a normal status of operation check.
q Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

Revision: July 2005 BRC-8 2005 Maxima
SYSTEM DESCRIPTION
[ABS]
Wheel Sensors EFS004EI

A
The front sensor units consist of a gear-shaped sensor rotor and a
sensor element. The element contains a magnet around which a coil
is wound. The front wheel sensors are installed on the front of the B
wheel knuckles. As the wheel rotates, the sensor generates a
square-wave signal. The frequency increases as the wheel speed
increases.
C

D
LBR333

E
The rear sensor units consist of wheel hubs with a series of internal
magnets and a sensor element. The rear wheel sensors are
installed on the inner side of the wheel knuckles. As the wheel
rotates, the sensor generates a square-wave signal. The frequency BRC
increases as the wheel speed increases.

H
WFIA0033E

Fail-Safe Function EFS004EJ

CAUTION: I
If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.
ABS/EBD SYSTEM
J
In case of an electrical malfunction with the ABS, the ABS warning lamp will turn on. In case of an electrical
malfunction with the EBD system, the BRAKE warning lamp and the ABS warning lamp will turn on.
The system will revert to one of the following conditions of the Fail-Safe function.
1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of K
vehicles without ABS system.
2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same
as the condition of vehicles without ABS or EBD system. L

Revision: July 2005 BRC-9 2005 Maxima
SYSTEM DESCRIPTION
[ABS]
Hydraulic Circuit Diagram EFS004EK

PFIA0422E

Revision: July 2005 BRC-10 2005 Maxima
CAN COMMUNICATION
[ABS]
CAN COMMUNICATION PFP:23710
A
System Description EFS004EL

Refer to LAN-7, "CAN COMMUNICATION" .
B

BRC

Revision: July 2005 BRC-11 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
TROUBLE DIAGNOSIS PFP:00000

How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS004EM

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 conventional
problems such as air leaks in the booster or lines, lack of brake fluid,
or other problems with the brake system.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electrical connections or faulty wiring. In this case,
careful checking of suspicious circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the problem, so a road
SEF233G
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 on such problems, especially
intermittent ones. 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" problems first. This
is one of the best ways to troubleshoot brake problems on an ABS
equipped vehicle. Also check related Service Bulletins for informa-
tion.

SEF234G

Revision: July 2005 BRC-12 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
WORK FLOW
A

BRC

LFIA0197E

Revision: July 2005 BRC-13 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
CLARIFY CONCERN
q 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.
q Ask the customer about what symptoms are present under what
conditions. Use this information to reproduce the symptom while
driving.
q It is also important to use the diagnosis sheet to understand
what type of trouble the customer is having.

SBR339B

EXAMPLE OF DIAGNOSIS SHEET

LFIA0176E

Revision: July 2005 BRC-14 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
Component Parts and Harness Connector Location EFS004EN

BRC

WFIA0304E

Revision: July 2005 BRC-15 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
Schematic EFS004EO

WFWA0016E

Revision: July 2005 BRC-16 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
Wiring Diagram -- ABS -- EFS004EP

BRC

WFWA0111E

Revision: July 2005 BRC-17 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]

WFWA0112E

Revision: July 2005 BRC-18 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]

BRC

WFWA0113E

Revision: July 2005 BRC-19 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]

WFWA0114E

Revision: July 2005 BRC-20 2005 Maxima
TROUBLE DIAGNOSIS
[ABS]
Basic Inspection EFS004EQ

BRAKE FLUID LEVEL, FLUID LEAK, AND BRAKE PAD INSPECTION A
1. Check fluid level in the brake fluid reservoir. If fluid level is low, add fluid.
2. Check the brake piping and around the ABS actuator and electric unit (control unit) for leaks. If there is
leaking or seeping fluid, check the following items. B
q If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified
torque and recheck for leaks.
q If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw, C
replace the damaged part and recheck for leaks.
q 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, replace the damaged part. If the fluid is leaking at the ABS D
actuator and electric unit (control unit), replace the ABS actuator and electric unit (control unit) assem-
bly.
CAUTION: E
The ABS actuator and electric unit (control unit) cannot be disassembled and must be replaced
as an assembly.
3. Check the brake pads for excessive wear. BRC
POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure the battery positive cable, negative cable and ground connection are not loose. In addition, make
sure the battery is sufficiently charged. G
ABS WARNING LAMP INSPECTION
1. Make sure ABS warning lamp turns on for approximately 1 second when the ignition switch is turned ON.
Check CAN communications. If there are no errors with CAN communication system, check combination H
meter. Refer to DI-5, "COMBINATION METERS" .
2. Make sure the lamp turns off approximately 1 second after the ignition switch is turned ON. If the lamp
does not turn off, conduct self-diagnosis. I
3. Make sure ABS warning lamp turns off approximately 2 seconds after the engine is started. If ABS warn-
ing lamp has not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the
ABS actuator and electric unit (control unit). J
4. After conducting the self-diagnosis, be sure to erase the error memory. Refer to BRC-24, "CONSULT-II
Function (ABS)" .
Warning Lamp and Indicator Timing EFS004ER
K

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