Question about 2005 Suzuki Grand Vitara

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INTERMITENT BRAKE FAILURE

2006 GRAN VITARA CRASHED INTO ELECTRICITY POLE. POINT OF IMPACT - CLOSE TO LEFT REAR WHEEL.

PROBLEM: ABS BRAKES WORKS VERY WELL EXCEPT ON
OCCASION, THE BRAKE PEDAL HITS THE FLOOR
BEFORE VECHILE STOPS. A FEW QUICK PUMPS
ON THE PEDAL, AND ITS GOOD AS NEW UNTIL
ANOTHER SIMILAR EPISODE. THIS HAPPENS 3 TO 4 TIMES A WEEK ONLY AT LOW SPEEDS.

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  • Suzuki Master
  • 6,982 Answers

First, put your foot firmly on the brake and hold it there for a minute or two. It should hold pressure. If not, your master cylinder is probably 'bypassing" internally.If it is, cylinder may be full but will have intermittent failure as you outlined. Check master cylinder and make sure it is full. Was this condition present before you hit pole?
Check all lines under car as well as around rear brakes for fluid leaks.No seepage is acceptable! IT IS EXTREMELY DANGEROUS TO DRIVE WITH THIS CONDITION!!!!! DO NOT DRIVE 'TILL REPAIRED!!!!

Posted on Dec 31, 2008

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  • Expert
  • 104 Answers

Have any repairs been made to the vehicle where the impact occurred?

My first suspicion would be that perhaps there is air in the brake lines, or maybe as a result of the impact there is a crack in one of the brake lines but I would expect that you would see brake fluid around somewhere and if it were leaking you would eventually come to a point the brakes would not work at all under any circumstance.

The first steps would be to:

1. Check your brake fluid reservoir in the engine bay and make sure it is up to the correct level.

2. Look at the left rear wheel area and see if you see any signs of a fluid leak. Be careful though, if there is brake fluid back there and you get it on the paint of the vehicle, it will take the paint off.

3. Have a helper get in the vehicle and operate the brakes while you or someone observes the left rear brake and see if you can see the brake engaging or if you see any signs of a fluid leak.

Posted on Dec 31, 2008

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1 Answer

Can leaky shocks on a 2006 Cadillac DTS cause the traction control light to come on


If the light is on there are DTC'S - diagnostic trouble code's stored in ABS - anti - lock brakes computer . Have codes checked first , something wrong with electrical part of antilock brakes , I know, what does ABS have to do with traction control ! traction control is a function of the ABS control module . Leaking shocks ? clarify , air shocks etc.... Before you start guessing , have it check for codes .
This vehicle is equipped with the TRW 440 V antilock braking system.
The vehicle is equipped with the following braking systems:
?€¢
Antilock Brake System (ABS)


?€¢
Engine Drag Control (EDC)


?€¢
Dynamic Rear Proportioning (DRP)


?€¢
Traction Control System (TCS)


?€¢
Vehicle Stability Enhancement System (VSES) (w/JL4)

The following components are involved in the operation of the above systems:
?€¢
Electronic brake control module (EBCM)--The EBCM controls the system functions and detects failures.


?€¢
Electronic brake control module (EBCM)--The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


-
System relay--The system relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves and pump motor.


-
Vent tube--The vent tube, located in the EBCM connector, is an opening to the internal cavity of the EBCM. It allows ventilation of the EBCM internals.


?€¢
Brake pressure modulator valve (BPMV)--The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


Important: There is a rubber isolator located under the BPMV and on the mounting studs. The rubber isolators protect the BPMV and the EBCM from vehicle vibrations.


?€¢
The BPMV contains the following components:


-
Pump motor


-
Inlet valves (one per wheel)


-
Outlet valves (one per wheel)


-
Master cylinder isolation valves (one per drive wheel)


-
Prime valves (one per drive wheel)


?€¢
Wheel speed sensors (WSS)--As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses this AC signal to calculate wheel speed. The wheel speed sensors are replaceable only as part of the wheel hub and bearing assemblies.


?€¢
Traction control switch--The TCS is manually disabled or enabled using the traction control switch.


?€¢
Stoplamp switch--The EBCM uses the stoplamp switch as an indication that the brake pedal is applied.


?€¢
Lateral accelerometer sensor (w/JL4)--The EBCM uses the lateral accelerometer sensor as an indication of the lateral acceleration of the vehicle.


?€¢
Yaw rate sensor (w/JL4)--The EBCM uses the yaw rate sensor as an indication of the yaw rate of the vehicle.


?€¢
Steering wheel position sensor (SWPS) (w/JL4)--The EBCM uses the SWPS as an indication of the position and rotation of the steering wheel.


This systems are very complex , your best bet would be to take it to a qualified repair shop .

Oct 18, 2016 | Cadillac Cars & Trucks

1 Answer

Can you help with multiple electrical issues??


This vehicle is equipped with the BOSCH 5.3 antilock braking system.
The vehicle is equipped with the following braking systems:
• Antilock Brake System (ABS)
• Dynamic Rear Proportioning (DRP)
• Traction Control System (ETS) (w/NW7)
• Traction Control System (TCS) (w/NW9)
• Vehicle stability enhancement system (VSES) You need to have vehicle checked for DTC'S diagnostic trouble codes , do you know what they are ? The traction control , ABS an stability control are all a function of the electronic brake control system .It also seams the power steering is controlled by the Antilock brake system.The Magnasteer® is controlled through the ABS module and varies the torque by adjusting the current flow through the actuator.
Your best place to start would be to have ABS module scanned for DTC'S . Codes would point you in right diagnostic direction .
The following components are involved in the operation of the above systems:
• Electronic Brake Control Module (EBCM), The EBCM controls the system functions and detects failures.
The EBCM contains the following components:
- System Relay, The system relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves and pump motor.
- Vent Tube, The vent tube, located in the EBCM, is an opening to the internal cavity of the EBCM. It allows ventilation of the EBCM internals.
• Brake Pressure Modulator Valve (BPMV), The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.

Mar 01, 2016 | 2005 Pontiac Grand Prix

2 Answers

How to diagnose an ABS problem


You need to find out what code is stored in the ABS control module, if the light is on there is a DTC an the system is disabled ! Don't know if auto part stores can pull ABS codes or not , You'll have to check it out . Personally I say take it to a ASE certified repair shop if you don't know anything about anti lock brakes !
?€¢
Electronic Brake Control Module (EBCM) -- The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


?€¢
System Relays -- The inlet and outlet solenoid relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves, the pump motor relay is energized and supplies battery positive voltage to the pump motor when ABS is activated.


?€¢
Brake Pressure Modulator Valve (BPMV) -- The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


This system can store 10-12 DTC's for something simple as wheel speed sensors to wiring problems to a malfunction of the EBCM . Some of these problems you would need a professional type scan tool ! The antilock brake system on your vehicle is the
BOSCH 8.0 antilock braking system
The vehicle is equipped with the following braking systems:
?€¢
Antilock Brake System (ABS)


?€¢
Dynamic Rear Proportioning (DRP)


?€¢
Traction Control System (TCS) (w/NW7)

The following components are involved in the operation of the above systems:
?€¢
Electronic Brake Control Module (EBCM) -- The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


?€¢
System Relays -- The inlet and outlet solenoid relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves, the pump motor relay is energized and supplies battery positive voltage to the pump motor when ABS is activated.


?€¢
Brake Pressure Modulator Valve (BPMV) -- The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


Important: There is a rubber isolator located under the BPMV and on the mounting studs. The rubber isolators protect the BPMV and the EBCM from vehicle vibrations.


?€¢
The BPMV contains the following components:


-
Pump Motor


-
Inlet Valves (one per wheel)


-
Outlet Valves (one per wheel)


?€¢
Wheel Speed Sensors (WSS) -- As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses this alternating current signal to calculate wheel speed. The wheel speed sensors are replaceable only as part of the wheel hub and bearing assemblies.


?€¢
Traction Control Switch (w/NW7) -- The TCS is manually disabled or enabled using the traction control switch.


?€¢
Stop Lamp Switch - The EBCM uses the stop lamp switch as an indication that the brake pedal is applied

Sep 21, 2015 | 2006 Saturn ION

1 Answer

How do I get the front brake rotor off of a 2006 GMC Canyon 2 WD?


Tools Required:

Lug Removal Tool
Impact Gun(Recommended)
Sockets.. Lots of metric sockets
Ratchets
Wrenches
Porta Power(hydraulic piston) --- THIS IS REALLY IMPORTANT... use to press hub off..
LOTS OF PATIENCE


Instructions:

1) Jack vehicle and support on jack stands.

2) Remove front tire.

3) Remove Front Brake caliper.. hang on frame using a bungee or other support
Important to not stress hose.

4) Remove brake pad support.

5) Remove 4 bolts from rear of hub.

6) Undo bolt for ABS sensorfrom frame, undo all clips holding wire.
Crawl under truckand unclip wire connector(trace wire from the ABS sensorto find it)

7) Make sure wire is unclipped from the frame and will not bind on removal of hub. (Prevents Damage of ABS sensor)

icon_cool.gif.pagespeed.ce.l5kzkvpb-u.gifTRICKY PART: Turn the wheels so that you can use the hydraulic porta-power against where the lower control arm mountsto the front. (Turn the
wheel left). Position porta-power to be placed inside dimple of the middle of the hub. DO NOT DAMAGE ABS SENSOR...
Pump Porta-power until hub "Pops".. be extremely careful removing the hub not to damage the ABS wireat all.. It is easy to break and not notice (I did
this and had to resplice it)

9) Hub should be removed from vehicle by this point and you can remove the six bolts holding the old rotor on. Still be careful not to damage the sensor.

10) Change the rotor. (do not use impact gun to reattach.. may strip threads)

11) Installation is basically reverse of removal.

12) Install brake pads, press caliper back in (typical brake job)

13) Put tire back on.. do other side.. and you're done.


Porta Poweris this.... http://www.southern-tool.com/store/porta_power_kit.html

Aug 02, 2014 | 2006 GMC Canyon

1 Answer

Power light is on intermitedly


power? you mean OD lamp?
ok , you do have 12vdc power distribution failure.
check the fuses for bad, rusted, or cracked.

Nov 20, 2013 | 2006 Suzuki Grand Vitara

1 Answer

2006 Ford F350 4wd dually. Had ABS light come on. Found rear brakes bad. Replaced roters, calipers, brakes, brake lines and all new seals in rear dif. Rebuilt front dif, new seals, new brakes, roters,...


It doesn't cost anything to ask a question at a ford dealership . I would call and just explain what's going on. That one has me stumped. Good luck !!

Oct 29, 2013 | 2006 Ford F 350 Super Duty

1 Answer

What is a diagnostic trouble codes C1041 & C1045?


Both of these codes refer to ABS problems....(Antilock Braking System)........and they are more specifically related to C1041 Right-Front Inlet Solenoid Valve Circuit Failure and C1045 Left-Front Inlet Solenoid Valve Circuit Failure....

This all seems confusing at first but is there anything different or of point to not ewith the braking of the vehicle...is the ABS light on the dash....has it had any brake repair service performed recently.......just to see where the fault might lie.......as this code could mean that the ABS control unit/module has failed or that something, hopefully less disastrous has occurred.......

Feb 21, 2011 | 2005 Suzuki Grand Vitara

1 Answer

2005 jeep grand cheroke limited with A hemi, been to the dealer more times then I can count, and still to this day the same problem. The service elect brake system light illuminates intermit and so for...


The braking force of the rear wheels is controlled by electronic brake distribution (EBD). The EBD functions like a rear proportioning valve. The EBD system uses the ABS system to control the slip of the rear wheels in partial braking range. The braking force of the rear wheels is controlled electronically by using the inlet and outlet valves located in the HCU. The HCU is a Hydraulic control unit. The HCU consists of a valve body, pump motor, and wire harness.

Did they check for DTC (diagnostic trouble codes) in the system? if so, what were they?

Accumulators in the valve body store extra fluid released to the system for ABS mode operation. The pump is used to clear the accumulator of brake fluid and is operated by a DC type motor. The motor is controlled by the ABM.
The valves modulate brake pressure during antilock braking and are controlled by the ABM.
The HCU provides four channel pressure control individually to all the front and rear brakes. Each of the four channels control the rear & front wheel brakes individually.
During antilock braking, the solenoid valves are opened and closed as needed. The valves are not static. They are cycled rapidly and continuously to modulate pressure and control wheel slip and deceleration.
During normal braking, the HCU solenoid valves and pump are not activated. The master cylinder and power booster operate the same as a vehicle without an ABS brake system.
During antilock braking, solenoid valve pressure modulation occurs in three stages, pressure increase, pressure hold, and pressure decrease. The valves are all contained in the valve body portion of the HCU.


PRESSURE DECREASE The outlet valve is opened and the inlet valve is closed during the pressure decrease cycle.
A pressure decrease cycle is initiated when speed sensor signals indicate high wheel slip at one or more wheels. At this point, the ABM closes the inlet then opens the outlet valve, which also opens the return circuit to the accumulators. Fluid pressure is allowed to bleed off (decrease) as needed to prevent wheel lock.
Once the period of high wheel slip has ended, the ABM closes the outlet valve and begins a pressure increase or hold cycle as needed.


PRESSURE HOLD Both solenoid valves are closed in the pressure hold cycle. Fluid apply pressure in the control channel is maintained at a constant rate. The ABM maintains the hold cycle until sensor inputs indicate a pressure change is necessary.


PRESSURE INCREASE The inlet valve is open and the outlet valve is closed during the pressure increase cycle. The pressure increase cycle is used to counteract unequal wheel speeds. This cycle controls re-application of fluid apply pressure due to changing road surfaces or wheel speed.

Nov 09, 2010 | 2005 Jeep Grand Cherokee

3 Answers

Brake peddle goes to the floor intermitantly.


The problem may be that the master cylinder needs to be bench bled,there is most likely air trapped in the piston of the master cylinder.The problem comes from the piston not being fully actuated when connected to the pedal assembly.A vacuum bleeder will generally pull it out.

May 25, 2009 | 2004 Dodge Ram 2500

1 Answer

ABS brake module sounds like a motor running and won't stop unless battery is disconnected. what is fix?


I would pull the fuse for the ABS hydraulic pump and then put it back in and see what happens. Don't ever recall a pump running. Dealer may need to hook up scan tool for diagnostic fault codes, DTCs.



Principles of Operation
The ABS control module receives wheel speed readings from both front wheel speed sensors and the rear differential speed sensor, and processes this information to determine if an ABS event is necessary. The wheel speed sensor electrically senses each tooth of the ABS sensor indicators as it passes through the wheel speed sensor's magnetic field.
The ABS control module continuously monitors and compares the rotational speed of each wheel speed sensor indicator and, when it detects an impending wheel lock, modulates brake pressure to the appropriate brake caliper(s). This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS control module returns the solenoid valves to their normal position, and normal (base) braking resumes.
The ABS control module is self-monitoring. When the ignition switch is turned to the RUN position, the ABS control module will do a preliminary electrical check, and at approximately 20 km/h (12 mph), the pump motor is turned on for approximately one-half second. Any malfunction of the ABS system will cause the ABS to shut off; normal power assisted braking, however, remains.
Inspection and Verification — Scan Tool Communications Check
  1. Verify the customer concern by carrying out the Drive Cycle Test.
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Parking brake cable
  • Tire pressure
  • Tire size or mismatched tires
  • Blown fuse
  • Central junction box (CJB):
    • fuse 23 (10A)
  • Battery junction box
    • fuse 102 (50A)
  • Connectors or connections
  • Ground integrity
  • Harness routing
  • Wire chafing
  • Circuitry open/shorted

-----------------------------------------------------------------------
Anti-Lock Control The four-wheel anti-lock brake system (4WABS) consists of the following components:
  • Anti-lock brake control module (2C265)
  • Front anti-lock brake sensor (2C204)
  • Front anti-lock brake sensor indicator (2C182)
  • Hydraulic control unit (2C219)
  • Rear anti-lock brake sensor (2C190)
  • Rear anti-lock brake sensor indicator (2C189)
  • Yellow ABS warning indicator

May 07, 2009 | 2000 Ford Expedition

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