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BRC


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F BRAKES

                                                                                                                                                                  A


                                                                                                                                                                  B
                                                                               SECTION
                                                                         BRAKE CONTROL SYSTEM                                                                     C


                                                                                                                                                                  D


                                                                                                                                                                  E
                                                               CONTENTS
                              TCS/ABS                                               ABS WARNING LAMP AND SLIP INDICATOR                                           BRC
                                                                                    LAMP INSPECTION ........................................... 19       .
PRECAUTIONS ......................................................... 3
                                                                     .           Warning Lamp and Indicator Timing ...................... 19             .
 Precautions for Supplemental Restraint System                                   Control Unit Input/Output Signal Standard ............ 20               .        G
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                            REFERENCE VALUE FROM CONSULT-II ........ 20                          .
 SIONER" ................................................................. 3
                                                                     .           CONSULT-II Function (ABS) ................................. 22          .
 Precautions for Brake System ................................. 3    .              CONSULT-II BASIC OPERATION PROCEDURE
 Precautions When Using CONSULT-II .................... 3            .                                                                                            H
                                                                                                                                                         ... 22
   CHECK POINTS FOR USING CONSULT-II ........ 3                      .              SELF-DIAGNOSIS ............................................. 23      .
 Precautions for Brake Control ................................. 4   .              DATA MONITOR ................................................ 25     .
 Precautions for CAN System .................................. 4     .              ACTIVE TEST .................................................... 27  .         I
PREPARATION .......................................................... 5
                                                                     .         TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
 Special Service Tool ................................................ 5
                                                                     .         ITEMS ....................................................................... 29
                                                                                                                                                         .
 Commercial Service Tools ....................................... 5  .           Wheel Sensor System Inspection .......................... 29            .        J
SYSTEM DESCRIPTION ........................................... 6     .           Engine System Inspection ..................................... 30       .
 System Diagram ...................................................... 6
                                                                     .           ABS/TCS Control Unit Inspection .......................... 31           .
 ABS Function .......................................................... 6
                                                                     .           Solenoid Valve System Inspection ........................ 31            .
 EBD Function .......................................................... 6
                                                                     .                                                                                            K
                                                                                 Actuator Motor, Motor Relay, and Circuit Inspection 32                  ...
 TCS Function .......................................................... 6
                                                                     .           Stop Lamp Switch System Inspection ................... 33               .
 Wheel Sensors ........................................................ 7
                                                                     .           ABS/TCS Control Unit Power and Ground Systems
 Fail-Safe Function ................................................... 7
                                                                     .           Inspection .............................................................. 34
                                                                                                                                                         .        L
   ABS/EBD SYSTEM .............................................. 7   .           CAN Communication System Inspection ............... 35                  .
   TCS SYSTEM ...................................................... 7
                                                                     .           Component Inspection ........................................... 35     .
 Hydraulic Circuit Diagram ....................................... 8 .              TCS OFF SWITCH ............................................. 35      .        M
CAN COMMUNICATION ........................................... 9      .         TROUBLE DIAGNOSES FOR SYMPTOMS ........... 36                             .
 System Description ................................................. 9
                                                                     .           ABS Works Frequently .......................................... 36      .
TROUBLE DIAGNOSIS ........................................... 10     .           Unexpected Pedal Action ...................................... 37       .
 How to Perform Trouble Diagnoses for Quick and                                  Long Stopping Distance ......................................... 38     .
 Accurate Repair .................................................... 10
                                                                     .           ABS Does Not Work .............................................. 38     .
   INTRODUCTION ................................................ 10  .           Pedal Vibration or ABS Operation Noise ............... 38               .
   WORK FLOW ......................................................11.           ABS Warning Lamp Does Not Come On When Igni-
   CLARIFY CONCERN ......................................... 12      .           tion Switch Is Turned On ....................................... 39     .
   EXAMPLE OF DIAGNOSIS SHEET .................. 12                  .           ABS Warning Lamp Stays On When Ignition Switch
 Component Parts and Harness Connector Location 13                   ...         Is Turned On .......................................................... 39
                                                                                                                                                         .
 Schematic ............................................................. 14
                                                                     .           Vehicle Jerks During TCS Activation ..................... 40            .
 Wiring Diagram -- TCS -- .................................... 15    .         WHEEL SENSORS .................................................. 41       .
 Basic Inspection .................................................... 19
                                                                     .           Removal and Installation ....................................... 41     .
   BRAKE FLUID LEVEL, FLUID LEAK, AND                                               REMOVAL .......................................................... 41.
   BRAKE PAD INSPECTION ................................ 19          .              INSTALLATION .................................................. 41   .
   POWER SYSTEM TERMINAL LOOSENESS
   AND BATTERY INSPECTION ........................... 19             .

Revision: October 2006                                                  BRC-1                                                              2006 Maxima
SENSOR ROTOR ..................................................... 42
                                                                 .                  REFERENCE VALUE FROM CONSULT-II .........66                             .
 Removal and Installation ....................................... 42
                                                                 .               CONSULT-II Function (ABS) ..................................69             .
  REMOVAL .......................................................... 42
                                                                 .                  CONSULT-II BASIC OPERATION PROCEDURE
  INSTALLATION ................................................... 42
                                                                 .                                                                                          ...69
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)... 43                                         SELF-DIAGNOSIS ..............................................70         .
 Removal and Installation ....................................... 43
                                                                 .                  DATA MONITOR .................................................73        .
  REMOVAL .......................................................... 43
                                                                 .                  ACTIVE TEST .....................................................75     .
  INSTALLATION ................................................... 43
                                                                 .             TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
                                                                               ITEMS .......................................................................77
                                                                                                                                                            .
                         VDC/TCS/ABS                                             Wheel Sensor System Inspection ..........................77                .
                                                                                 Engine System Inspection .....................................78           .
PRECAUTIONS ........................................................ 45
                                                                      .          ABS/TCS/VDC Control Unit Inspection ..................79                   .
 Precautions for Supplemental Restraint System                                   Steering Angle Sensor System Inspection .............79                    .
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                         Yaw Rate/Side/Decel G Sensor System Inspection...80
 SIONER" ................................................................ 45
                                                                      .          Solenoid and VDC Change-Over Valve System
 Precautions for Brake System ............................... 45      .          Inspection ...............................................................82
                                                                                                                                                            .
 Precautions When Using CONSULT-II .................. 45              .          Actuator Motor, Motor Relay, and Circuit Inspection...83
   CHECK POINTS FOR USING CONSULT-II ....... 45                       .          Stop Lamp Switch System Inspection ....................84                  .
 Precautions for Brake Control ............................... 46     .          ABS/TCS/VDC Control Unit Power and Ground
 Precautions for CAN System ................................. 46      .          Systems Inspection ................................................85      .
PREPARATION ........................................................ 48
                                                                      .          Brake Fluid Level Switch System Inspection .........86                     .
 Special Service Tool .............................................. 48
                                                                      .          CAN Communication System Inspection ...............87                      .
 Commercial Service Tools ..................................... 48    .          Component Inspection ...........................................87         .
SYSTEM DESCRIPTION ......................................... 49       .             VDC OFF SWITCH .............................................87          .
 System Components ............................................. 49   .        TROUBLE DIAGNOSES FOR SYMPTOMS ............88                                .
 ABS Function ......................................................... 49
                                                                      .          ABS Works Frequently ...........................................88         .
 EBD Function ........................................................ 49
                                                                      .          Unexpected Pedal Action .......................................89          .
 TCS Function ......................................................... 50
                                                                      .          Long Stopping Distance .........................................90         .
 VDC Function ........................................................ 50
                                                                      .          ABS Does Not Work ..............................................90         .
 Wheel Sensors ...................................................... 51
                                                                      .          Pedal Vibration or ABS Operation Noise ...............90                   .
 Fail-Safe Function ................................................. 51
                                                                      .          ABS Warning Lamp Does Not Come On When Igni-
   ABS/EBD SYSTEM ............................................ 51     .          tion Switch Is Turned On ........................................91        .
   VDC/TCS SYSTEM ............................................ 51     .          ABS Warning Lamp Stays On When Ignition Switch
 Hydraulic Circuit Diagram ...................................... 52  .          Is Turned On ..........................................................91  .
CAN COMMUNICATION .......................................... 53       .          Vehicle Jerks During TCS/VDC Activation .............92                    .
 System Description ................................................ 53
                                                                      .        ON-VEHICLE SERVICE ...........................................93             .
TROUBLE DIAGNOSIS ........................................... 54      .          Adjustment of Steering Angle Sensor Neutral Posi-
 How to Perform Trouble Diagnoses for Quick and                                  tion .........................................................................93
                                                                                                                                                            .
 Accurate Repair ..................................................... 54
                                                                      .        WHEEL SENSORS ..................................................94           .
   INTRODUCTION ................................................ 54   .          Removal and Installation ........................................94        .
   WORK FLOW ..................................................... 55 .             REMOVAL ...........................................................94   .
   CLARIFY CONCERN ......................................... 56       .             INSTALLATION ...................................................94      .
   EXAMPLE OF DIAGNOSIS SHEET ................... 56                  .        SENSOR ROTOR .....................................................95         .
 Component Parts and Harness Connector Location 57                    ...        Removal and Installation ........................................95        .
 Schematic .............................................................. 58
                                                                      .             REMOVAL ...........................................................95   .
 Wiring Diagram -- VDC -- .................................... 59     .             INSTALLATION ...................................................95      .
 Basic Inspection .................................................... 65
                                                                      .        ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...96
   BRAKE FLUID LEVEL, FLUID LEAK, AND                                            Removal and Installation ........................................96        .
   BRAKE PAD INSPECTION ................................ 65           .             REMOVAL ...........................................................96   .
   POWER SYSTEM TERMINAL LOOSENESS                                                  INSTALLATION ...................................................96      .
   AND BATTERY INSPECTION ............................ 65             .        STEERING ANGLE SENSOR ..................................98                   .
   ABS WARNING LAMP, SLIP INDICATOR LAMP                                         Removal and Installation ........................................98        .
   AND VDC OFF INDICATOR LAMP INSPECTION 65                           ...      G SENSOR ...............................................................99   .
 Warning Lamp and Indicator Timing ...................... 66          .          Removal and Installation ........................................99        .
 Control Unit Input/Output Signal Standard ............. 66           .             REMOVAL ...........................................................99   .
                                                                                    INSTALLATION ...................................................99      .




Revision: October 2006                                                  BRC-2                                                                2006 Maxima
                                             PRECAUTIONS
                                                                                                   [TCS/ABS]
PRECAUTIONS                                                         PFP:00001
                                                                                                                       A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                         EFS00637


The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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:                                                                                                              D
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.                                                                  E
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.                                                                                BRC
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.
                                                                                                                      G
Precautions for Brake System                                                                               EFS004FC


CAUTION:
q  Refer to MA-9, "RECOMMENDED FLUIDS AND LUBRICANTS" for recommended brake fluid.                                     H
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.                                                     I
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
                                                                                                                       J
   system.
q  Use flare nut wrench when removing and installing brake
   tube.
                                                                                                                       K
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                                                            L
   the ABS actuator and electric unit (control unit) or the bat-
   tery terminal before performing the work.
q  Always torque brake lines when installing.                                                                          M
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 brakes) or BR-35, "Brake Burnishing" (rear disc
   brakes).
WARNING:
q  Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
Precautions When Using CONSULT-II                                                                          EFS004FD


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: October 2006                             BRC-3                                           2006 Maxima
                                              PRECAUTIONS
                                                                                                    [TCS/ABS]
     q  If NO, GO TO 5.
2.   Is there any indication other than indications relating to CAN communication system in the self-diagnosis
     results?
     q If YES, GO TO 3.

     q If NO, GO TO 4.

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.
5.   Diagnose CAN communication system. Refer to LAN-25, "CAN COMMUNICATION" .
Precautions for Brake Control                                                                                EFS004FE


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
     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.
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.
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
     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.
Precautions for CAN System                                                                                   EFS004FF


q    Do not apply voltage of 7.0V or higher to terminal to be measured.
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.
     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: October 2006                              BRC-4                                           2006 Maxima
                                            PREPARATION
                                                                                                      [TCS/ABS]
PREPARATION                                                                                                   PFP:00002
                                                                                                                            A
Special Service Tool                                                                                             EFS00632


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


                                                                                                                            D


                                                           WFIA0101E
                                                                                                                            E
Commercial Service Tools                                                                                         EFS00633


 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)

                                                                                                                            G



                                                           S-NT360
                                                                                                                            H



                                                                                                                             I


                                                                                                                            J



                                                                                                                            K


                                                                                                                            L



                                                                                                                            M




Revision: October 2006                             BRC-5                                              2006 Maxima
                                       SYSTEM DESCRIPTION
                                                                                                    [TCS/ABS]
SYSTEM DESCRIPTION                                                                                      PFP:00000

System Diagram                                                                                                EFS004FJ




                                                                                                       WFIA0445E



ABS Function                                                                                                  EFS004FK


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                                                                                                  EFS004FL


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.
TCS Function                                                                                                 EFS004FM


q   Spinning of the drive wheels is detected by the ABS/TCS control unit using inputs from the wheel speed
    sensors. If wheel spin occurs, the drive wheel right and left brake fluid pressure control and engine fuel cut
    are conducted while the throttle value is restricted to reduce the engine torque and decrease the amount
    of wheel spin. In addition, the throttle opening is controlled to achieve the optimum engine torque.


Revision: October 2006                              BRC-6                                           2006 Maxima
                                      SYSTEM DESCRIPTION
                                                                                                 [TCS/ABS]
q   Depending on road condition, the vehicle may have a sluggish feel. This is normal, because optimum trac-
    tion has the highest priority during TCS operation.                                                              A
q   TCS may be activated during sudden vehicle acceleration, wide open throttle acceleration, sudden trans-
    mission shifts or when the vehicle is driven on a road with a varying surface friction coefficient.
q   The SLIP indicator lamp flashes to inform the driver of TCS operation.                                           B
Wheel Sensors                                                                                             EFS004FN



                                                                                                                     C
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
wheel knuckles. As the wheel rotates, the sensor generates a                                                         D
square-wave signal. The frequency increases as the wheel speed
increases.
                                                                                                                     E



                                                                                                                     BRC
                                                                                                       LBR333




The rear sensor units consist of wheel hubs with a series of internal                                                G
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 increases as
the wheel speed increases.                                                                                           H



                                                                                                                      I


                                                                                                       WFIA0033E
                                                                                                                     J
Fail-Safe Function                                                                                        EFS004FO


CAUTION:
If the Fail-Safe function is activated, perform the Self Diagnosis for ABS/TCS system.                               K

ABS/EBD SYSTEM
In case of an electrical malfunction with the ABS, the ABS warning lamp and SLIP indicator lamp will turn on.        L
In case of an electrical malfunction with the EBD system, the BRAKE warning lamp, ABS warning lamp and
SLIP indicator lamp will turn on.
The system will revert to one of the following conditions of the Fail-Safe function.
                                                                                                                     M
1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of
    vehicles without ABS/TCS 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/TCS or EBD system.
TCS SYSTEM
In case of TCS system malfunction, the SLIP indicator lamp is turned on and the condition of the vehicle is the
same as the condition of vehicles without TCS system. In case of an electrical malfunction with the TCS sys-
tem, the ABS control continues to operate normally without TCS control.




Revision: October 2006                            BRC-7                                          2006 Maxima
                            SYSTEM DESCRIPTION
                                                 [TCS/ABS]
Hydraulic Circuit Diagram                                 EFS004FP




                                                   PFIA0422E




Revision: October 2006            BRC-8          2006 Maxima
                                CAN COMMUNICATION
                                                    [TCS/ABS]
CAN COMMUNICATION                                      PFP:23710
                                                                     A
System Description                                        EFS004FQ


Refer to LAN-25, "CAN COMMUNICATION" .
                                                                     B



                                                                     C


                                                                     D


                                                                     E



                                                                     BRC



                                                                     G


                                                                     H



                                                                      I


                                                                     J



                                                                     K


                                                                     L



                                                                     M




Revision: October 2006                   BRC-9      2006 Maxima
                                        TROUBLE DIAGNOSIS
                                                                          [TCS/ABS]
TROUBLE DIAGNOSIS                                                            PFP:00000

How to Perform Trouble Diagnoses for Quick and Accurate Repair                   EFS004FR

INTRODUCTION
The ABS/TCS system has an electronic control unit to control major
functions. The control unit accepts input signals from sensors and
controls actuator operation. It is also important to check for conven-
tional 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/TCS complaint. The cus-
tomer is a very good source of information on such problems, espe-
cially 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/
TCS equipped vehicle. Also check related Service Bulletins for infor-
mation.

                                                                              SEF234G




Revision: October 2006                             BRC-10                 2006 Maxima
                         TROUBLE DIAGNOSIS
                                             [TCS/ABS]
WORK FLOW
                                                           A


                                                           B



                                                           C


                                                           D


                                                           E



                                                           BRC



                                                           G


                                                           H



                                                            I


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                                                           M




                                               WFIA0532E




Revision: October 2006        BRC-11         2006 Maxima
                                         TROUBLE DIAGNOSIS
                                                                            [TCS/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




                                                                              WFIA0097E




Revision: October 2006                              BRC-12                  2006 Maxima
                         TROUBLE DIAGNOSIS
                                                 [TCS/ABS]
Component Parts and Harness Connector Location            EFS004FS

                                                                     A


                                                                     B



                                                                     C


                                                                     D


                                                                     E



                                                                     BRC



                                                                     G


                                                                     H



                                                                      I


                                                                     J



                                                                     K


                                                                     L



                                                                     M




                                                   WFIA0305E




Revision: October 2006          BRC-13           2006 Maxima
                         TROUBLE DIAGNOSIS
                                             [TCS/ABS]
Schematic                                            EFS004FT




                                               WFWA0302E




Revision: October 2006        BRC-14         2006 Maxima
                           TROUBLE DIAGNOSIS
                                               [TCS/ABS]
Wiring Diagram -- TCS --                               EFS004FU

                                                                  A


                                                                  B



                                                                  C


                                                                  D


                                                                  E



                                                                  BRC



                                                                  G


                                                                  H



                                                                   I


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                                                                  M




                                                 WFWA0303E




Revision: October 2006          BRC-15         2006 Maxima
                         TROUBLE DIAGNOSIS
                                             [TCS/ABS]




                                               WFWA0304E




Revision: October 2006        BRC-16         2006 Maxima
                         TROUBLE DIAGNOSIS
                                             [TCS/ABS]

                                                           A


                                                           B



                                                           C


                                                           D


                                                           E



                                                           BRC



                                                           G


                                                           H



                                                            I


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                                                           M




                                               WFWA0305E




Revision: October 2006        BRC-17         2006 Maxima
                         TROUBLE DIAGNOSIS
                                             [TCS/ABS]




                                               WFWA0306E




Revision: October 2006        BRC-18         2006 Maxima
                                             TROUBLE DIAGNOSIS
                                                                                                            [TCS/ABS]
Basic Inspection                                                                                                    EFS004FV

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 AND SLIP INDICATOR LAMP INSPECTION
1.   Make sure ABS warning lamp and SLIP indicator lamp turn on for approximately 2 seconds when the igni-
     tion switch is turned ON. Check CAN communications. If there are no errors with the CAN communication                     H
     system, check combination meter. Refer to DI-5, "COMBINATION METERS" .
2.   Make sure the lamps turn off approximately 2 seconds after the ignition switch is turned ON. If the lamp
     does not turn off, conduct self-diagnosis.                                                                                I
3.   Make sure ABS warning lamp and SLIP indicator lamp turn off approximately 2 seconds after the engine
     is started. If ABS warning lamp and SLIP indicator lamp have 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-22, "CONSULT-II
     Function (ABS)" .
Warning Lamp and Indicator Timing                                                                                   EFS004FW
                                                                                                                               K
                                                                                                    



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