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F BRAKES

SECTION
BRAKE CONTROL SYSTEM
BRC B

E
CONTENTS
VDC/TCS/ABS POWER SYSTEM TERMINAL LOOSENESS BRC
AND BATTERY INSPECTION ............................ 23 .
PRECAUTIONS ......................................................... 3
. ABS WARNING LAMP, SLIP INDICATOR LAMP
Precautions for Supplemental Restraint System AND VDC OFF INDICATOR LAMP INSPECTION 23 ... G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Warning Lamp and Indicator Timing ...................... 24 .
SIONER" ................................................................. 3
. Control Unit Input/Output Signal Standard ............ 24 .
Precautions for Brake System ................................. 3 . REFERENCE VALUE FROM CONSULT-II ........ 24 .
Precautions When Using CONSULT-II .................... 3 . H
CONSULT-II Function (ABS) ................................. 28 .
CHECK POINTS FOR USING CONSULT-II ........ 3 . CONSULT-II BASIC OPERATION PROCEDURE
Precautions for Brake Control ................................. 4 . ... 28
Precautions for CAN System .................................. 4 . SELF-DIAGNOSIS ............................................. 29 . I
Wiring Diagrams and Trouble Diagnosis ................. 5 . DATA MONITOR ................................................ 32 .
PREPARATION .......................................................... 6
. ACTIVE TEST .................................................... 36 .
Special Service Tool ................................................ 6
. TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC J
Commercial Service Tools ....................................... 6 . ITEMS ....................................................................... 38
.
SYSTEM DESCRIPTION ........................................... 7 . Wheel Sensor System Inspection .......................... 38 .
System Components ............................................... 7 . Engine System Inspection ..................................... 39 .
ABS Function .......................................................... 8
. K
ABS/TCS/VDC Control Unit Inspection ................. 40 .
EBD Function .......................................................... 8
. Steering Angle Sensor System .............................. 40 .
TCS Function .......................................................... 8
. Yaw Rate/Side/Decel G Sensor System Inspection 41 ...
VDC Function .......................................................... 8
. Solenoid and VDC Change-Over Valve System L
Fail-Safe Function ................................................... 8
. Inspection .............................................................. 43
.
ABS/EBD SYSTEM .............................................. 9 . Actuator Motor, Motor Relay, and Circuit Inspection 44 ...
VDC/TCS SYSTEM .............................................. 9 . Stop Lamp Switch System Inspection ................... 45 . M
ACTIVE BOOSTER .............................................. 9 . ABS/TCS/VDC Control Unit Power and Ground
Hydraulic Circuit Diagram ....................................... 9 . Systems Inspection ............................................... 46 .
CAN COMMUNICATION ......................................... 10 . Brake Fluid Level Switch System Inspection ......... 47 .
System Description ............................................... 10
. Active Booster System Inspection ......................... 48 .
TROUBLE DIAGNOSIS ............................................11 . Delta Stroke Sensor System Inspection ................ 49 .
How to Perform Trouble Diagnoses for Quick and Pressure Sensor System Inspection ..................... 51 .
Accurate Repair .....................................................11
. Steering Angle Sensor Safe Mode Inspection ....... 53 .
INTRODUCTION .................................................11 . CAN Communication System Inspection ............... 54 .
WORK FLOW ..................................................... 12. ICC System Inspection .......................................... 54 .
CLARIFY CONCERN ......................................... 13 . Inspection For Self-diagnosis Result "ST ANGLE
EXAMPLE OF DIAGNOSIS SHEET .................. 13 . SEN SIGNAL" ........................................................ 55 .
Component Parts and Harness Connector Location 14 ... Inspection For Self-diagnosis Result "DECEL G
Schematic ............................................................. 15
. SEN SET" .............................................................. 55
.
Wiring Diagram -- VDC -- .................................... 16 . VDC OFF Indicator lamp Does Not Illuminate ....... 55 .
Basic Inspection .................................................... 23
. Component Inspection ........................................... 56 .
BRAKE FLUID LEVEL, FLUID LEAK, AND VDC OFF SWITCH ............................................ 56 .
BRAKE PAD INSPECTION ................................ 23 .

Revision: August 2007 BRC-1 2004 QX56
TROUBLE DIAGNOSES FOR SYMPTOMS ............ 57 . WHEEL SENSORS ..................................................64 .
ABS Works Frequently .......................................... 57 . Removal and Installation ........................................64 .
Unexpected Pedal Action ...................................... 58 . REMOVAL ...........................................................64
.
Long Stopping Distance ......................................... 59 . INSTALLATION ...................................................64.
ABS Does Not Work .............................................. 59 . SENSOR ROTOR .....................................................65 .
Pedal Vibration or ABS Operation Noise ............... 59 . Removal and Installation ........................................65 .
ABS Warning Lamp Does Not Come On When Igni- ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...66
tion Switch Is Turned On ....................................... 60 . Removal and Installation ........................................66 .
ABS Warning Lamp Stays On When Ignition Switch REMOVAL ...........................................................66
.
Is Turned On .......................................................... 60 . INSTALLATION ...................................................67.
Vehicle Jerks During TCS/VDC Activation ............. 61 . STEERING ANGLE SENSOR ..................................68 .
ON-VEHICLE SERVICE ........................................... 62 . Removal and Installation ........................................68 .
Adjustment of Steering Angle Sensor Neutral Posi- G SENSOR ...............................................................69
.
tion ......................................................................... 62
. Removal and Installation ........................................69 .
Calibration of Decel G Sensor ............................... 62 . REMOVAL ...........................................................69
.
INSTALLATION ...................................................69.

Revision: August 2007 BRC-2 2004 QX56
PRECAUTIONS
[VDC/TCS/ABS]
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EFS0062W

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
G 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
G 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
G 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 EFS003QB

CAUTION:
G Always use recommended brake fluid. Refer to MA-10, "RECOMMENDED FLUIDS AND LUBRI- H
CANTS" .
G Never reuse drained brake fluid.
G Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is I
splashed on painted areas, wash it away with water immediately.
G To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.
J
G Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic
system.
G Use flare nut wrench when removing and installing brake
tube. K
G 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. L
G Turn the ignition switch OFF and remove the connector of
the ABS actuator control unit or the battery terminal before
performing the work. M
G Always torque brake lines when installing.
G 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-25, "BRAKE BURNISHING PROCEDURE" (front disc brake) or BR-31, "BRAKE BUR-
NISHING PROCEDURE" (rear disc brake).
WARNING:
G Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
Precautions When Using CONSULT-II EFS003QC

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?

Revision: August 2007 BRC-3 2004 QX56
PRECAUTIONS
[VDC/TCS/ABS]
G If YES, GO TO 2.
G If NO, GO TO 5.

2. Is there any indication other than indications relating to CAN communication system in the self-diagnosis
results?
G If YES, GO TO 3.

G 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 BRC-10, "CAN COMMUNICATION" .
Precautions for Brake Control EFS003QD

G During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
G 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.
G Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
G 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 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.
G If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or
error.
G If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits or improper wiring.
G If the following components are replaced with non-genuine components or modified, the VDC OFF indica-
tor lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorbers, struts, springs, bushings, etc.), tires, wheels (exclude specified
size), components related to brake system (pads, rotors, calipers, etc.), components related to engine
(muffler, ECM, etc.), components related to body reinforcement (roll bar, tower bar, etc.).
G Driving with broken or excessively worn suspension components, tires or brake system components may
cause the VDC OFF indicator lamp and the SLIP indicator lamp to turn on, and the VDC system may not
operate properly.
G When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The
noise is a result of the normal operation of the TCS and VDC.
G When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as
sharp curves on a freeway), the VDC may not operate normally, or the VDC warning lamp and the SLIP
indicator lamp may turn on. This is not a problem if normal operation can be resumed after restarting the
engine.
G Sudden turns (such as spin turns, acceleration turns), drifting, etc. with VDC turned off may cause the yaw
rate/side G sensor to indicate a problem. This is not a problem if normal operation can be resumed after
restarting the engine.
Precautions for CAN System EFS003QE

G Do not apply voltage of 7.0V or higher to terminal to be measured.
G Maximum open terminal voltage of tester in use must be less than 7.0V.
G Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.

Revision: August 2007 BRC-4 2004 QX56
PRECAUTIONS
[VDC/TCS/ABS]
G 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). A

PKIA0306E

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

BRC

G
PKIA0307E

Wiring Diagrams and Trouble Diagnosis EFS003QF
H
When you read wiring diagrams, refer to the following:
G GI-15, "How to Read Wiring Diagrams".
G PG-4, "POWER SUPPLY ROUTING CIRCUIT". I
When you perform trouble diagnosis, refer to the following:
G GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES".
J
G GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident".

Revision: August 2007 BRC-5 2004 QX56
PREPARATION
[VDC/TCS/ABS]
PREPARATION PFP:00002

Special Service Tool EFS003QG

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

WFIA0101E

Commercial Service Tools EFS003QH

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

S-NT360

Revision: August 2007 BRC-6 2004 QX56
SYSTEM DESCRIPTION
[VDC/TCS/ABS]
SYSTEM DESCRIPTION PFP:00000
A
System Components EFS003QI

BRC

WFIA0222E

Revision: August 2007 BRC-7 2004 QX56
SYSTEM DESCRIPTION
[VDC/TCS/ABS]
ABS Function EFS003QJ

G 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.
G If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative and
the ABS warning lamp turns on.
G The electrical system can be diagnosed using CONSULT-II.
G During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
G 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.
G 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 EFS003QK

G 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.
G 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.
G The electrical system can be diagnosed using CONSULT-II.
G During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
G 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.
TCS Function EFS003QL

G Spinning of the drive wheels is detected by the ABS actuator and electric unit (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 activated 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 opti-
mum engine torque.
G 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.
G 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.
G The SLIP indicator lamp flashes to inform the driver of TCS operation.
VDC Function EFS003QM

G In addition to the ABS/TCS function, the driver steering amount and brake operation amount are detected
from the steering angle sensor and front and rear pressure sensors, and the vehicle's driving status
(amount of under steering/over steering) is determined using inputs from the yaw rate sensor/side G sen-
sor, wheel speed sensors, etc. and this information is used to improve vehicle stability by controlling the
braking and engine torque application to the wheels.
G The SLIP indicator lamp flashes to inform the driver of VDC operation.
G During VDC operation, the vehicle body and brake pedal may vibrate lightly and a mechanical noise may
be heard. This is normal.
G The ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp may turn on when the vehicle is
subject to strong shaking or large vibration, such as when the vehicle is on a turn table or a ship while the
engine is running or on a steep slope. In this case, restart the engine on a normal road and if the ABS
warning lamp, VDC OFF indicator lamp and SLIP indicator lamp turn off, there is no problem.
Fail-Safe Function EFS003QN

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

Revision: August 2007 BRC-8 2004 QX56
SYSTEM DESCRIPTION
[VDC/TCS/ABS]
ABS/EBD SYSTEM
In case of an electrical malfunction with the ABS, the ABS warning lamp, VDC OFF indicator lamp and SLIP A
indicator lamp will turn on. In case of an electrical malfunction with the EBD system, the BRAKE warning lamp,
ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp will turn on.
The system will revert to one of the following conditions of the Fail-Safe function. B
1. For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of
vehicles without ABS/TCS/VDC system.
2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same C
as the condition of vehicles without ABS/TCS/VDC or EBD system.
VDC/TCS SYSTEM
In case of TCS/VDC system malfunction, the VDC OFF indicator lamp and SLIP indicator lamp are turned on D
and the condition of the vehicle is the same as the condition of vehicles without TCS/VDC system. In case of
an electrical malfunction with the TCS/VDC system, the ABS control continues to operate normally without
TCS/VDC control. E
ACTIVE BOOSTER
The active brake booster consists of a vacuum booster, an active booster control group and a delta stroke
sensor. In case of brake booster system malfunction due to loss of vacuum, the delta stroke sensor will signal BRC
the ABS actuator and electric unit (control unit) that a booster failure has occurred. The active booster then
applies supplemental force to the master cylinder relative to the amount of force exerted on the brake pedal.
Hydraulic Circuit Diagram EFS003QO
G

WFIA0187E

Revision: August 2007 BRC-9 2004 QX56
CAN COMMUNICATION
[VDC/TCS/ABS]
CAN COMMUNICATION PFP:23710

System Description EFS003QP

Refer to LAN-5, "CAN COMMUNICATION" .

Revision: August 2007 BRC-10 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS PFP:00000
A
How to Perform Trouble Diagnoses for Quick and Accurate Repair EFS003QQ

INTRODUCTION
The ABS/TCS/VDC system has an electronic control unit to control B
major functions. The control unit accepts input signals from sensors
and controls actuator operation. It is also important to check for con-
ventional problems such as air leaks in the booster or lines, lack of
brake fluid, or other problems with the brake system. C
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, D
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
test should be performed.
SEF233G
E
Before undertaking actual checks, take just a few minutes to talk with
a customer who approaches with an ABS/TCS/VDC complaint. The
customer is a very good source of information on such problems, BRC
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 G
is one of the best ways to troubleshoot brake problems on an ABS/
TCS/VDC equipped vehicle. Also check related Service Bulletins for
information. H
SEF234G

Revision: August 2007 BRC-11 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
WORK FLOW

WFIA0358E

Revision: August 2007 BRC-12 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
CLARIFY CONCERN
G A customer's description of a vehicle concern may vary depend- A
ing on the individual. It is important to clarify the customer's con-
cern.
G Ask the customer about what symptoms are present under what B
conditions. Use this information to reproduce the symptom while
driving.
G It is also important to use the diagnosis sheet to understand C
what type of trouble the customer is having.

SBR339B
D

EXAMPLE OF DIAGNOSIS SHEET
E

BRC

WFIA0097E

Revision: August 2007 BRC-13 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
Component Parts and Harness Connector Location EFS003QR

WFIA0223E

Revision: August 2007 BRC-14 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
Schematic EFS003QS

BRC

WFWA0288E

Revision: August 2007 BRC-15 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
Wiring Diagram -- VDC -- EFS003QT

WFWA0289E

Revision: August 2007 BRC-16 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

BRC

WFWA0055E

Revision: August 2007 BRC-17 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

WFWA0078E

Revision: August 2007 BRC-18 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

BRC

WFWA0097E

Revision: August 2007 BRC-19 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

WFWA0098E

Revision: August 2007 BRC-20 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

BRC

WFWA0079E

Revision: August 2007 BRC-21 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]

WFWA0290E

Revision: August 2007 BRC-22 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
Basic Inspection EFS003QU

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
G If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified
torque and recheck for leaks.
G If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) threads, C
replace the damaged part and recheck for leaks.
G 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, SLIP INDICATOR LAMP AND VDC OFF INDICATOR LAMP INSPECTION
1. Make sure ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp (when VDC OFF switch
is off), turn on for approximately 2 seconds when the ignition switch is turned ON. If they do not, check the H
VDC OFF indicator lamp and the VDC OFF switch. Refer to BRC-56, "VDC OFF SWITCH" . Check CAN
communications. If there are no errors with the VDC OFF switch or CAN communication system, check
combination meter. Refer to DI-5, "COMBINATION METERS" . I
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.
3. With the engine running, make sure the VDC OFF indicator lamp turns on and off when the VDC OFF J
switch is turned on and off. If the indicator lamp status does not correspond to switch operation, check the
VDC OFF switch. Refer to BRC-56, "VDC OFF SWITCH" .
4. Make sure ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp turn off approximately 2 K
seconds after the engine is started. If ABS warning lamp, SLIP indicator lamp or VDC OFF indicator lamp
have not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the ABS actu-
ator and electric unit (control unit).
L
5. After conducting the self-diagnosis, be sure to erase the error memory. Refer to BRC-28, "CONSULT-II
Function (ABS)" .

Revision: August 2007 BRC-23 2004 QX56
TROUBLE DIAGNOSIS
[VDC/TCS/ABS]
Warning Lamp and Indicator Timing EFS003QV

ABS VDC OFF SLIP
Condition Remarks
warning lamp indicator lamp indicator lamp
When the ignition switch is OFF -- -- -- --
After the ignition switch is turned

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