Question about 2006 Nissan Maxima

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Abs control unit

The abs control unit continues to run after the vehicle key is off..

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  • Nissan Master
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Check for sensor at the hubs. might be a short or broken wire causing the problem.

Posted on Apr 26, 2013

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Fuses controlling abs on 2005 ford taurus


Inspection and Verification
  1. Verify the customer concern.
  1. Verify the stoplamps operate correctly by pressing and releasing the brake pedal with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to Section 417-01 . If the stoplamps operate correctly, proceed to the next step.
  1. Verify that the PRNDL operates correctly on the instrument cluster. If the PRNDL does not operate correctly, refer to Section 413-01 . If the PRNDL operates correctly, proceed to the next step.
  1. Visually inspect for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Wheel speed sensor ring
  • Hydraulic control unit (HCU)
  • Incorrectly inflated tires
  • Mismatched wheels or tires on vehicle
  • Base brake concern
  • Brake booster vacuum hose
  • Specified steering components, suspension components and tire size
  • Battery junction box (BJB) fuse(s):
    • 32 (40A)
    • 35 (20A)
  • Smart junction box (SJB) fuse 27 (10A)
  • Anti-lock brake system (ABS) module
  • Wheel speed sensors
  • Brake pedal position (BPP) switch
  • Brake fluid level switch
  • Wiring harness
  • Connectors or connections
  • Circuitry

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel, and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connection of the data link connector to the vehicle.
    • check that the ignition switch is in the RUN position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. NOTE: The battery voltage must be greater than 9.4V for the self-test to operate correctly.
    Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for the ABS module, Go To Pinpoint Test A .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the ABS module.
  1. If the DTCs retrieved are related to the concern, go to the Anti-lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Index to continue diagnostics.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnostics.

Apr 08, 2016 | Ford Cars & Trucks

1 Answer

I changed the rear brake calipers on my 2000 chevy Z71 i get oil out of both after bleeding but brake peddle still is spongy


Ok many people have this problem when they do brakes that ABS equiped. First of all make sure that all your connection are tight at the calipers. Check and make sure you have no visible leaks at all every where on the vehicle. Second alot of people do not know that the vehicle must be running when you bleed the brakes when the vehicle has ABS brakes. So the solution to your problem is very simple check to make sure master cylinder is full, then start your vehicle and have some one pump the brakes then hold down and open bleeder valve. You need to do this several times with ABS brakes,make sure you continue to check master cylinder fluid level continuously. Always start bleeding the brake that is farthest away from master cylinder first then continue to work your way to the closesest. Remeber when bleeding brakes when equiped with ABS the vehicle must be running to allow the ABS pump to run and bleed as well.

May 11, 2011 | 2000 Chevrolet Silverado 1500

2 Answers

My ABS light is on and off on a 2006 Mercury Mariner. Do I need to do something to get this light to stay off


SECTION 206-09: Vehicle Dynamic Systems 2006 Escape/Mariner/Escape Hybrid/Mariner Hybrid Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 03/29/2005 Anti-Lock Control adobe.gif Printable View (63 KB) The ABS consists of the following components:
  • Hydraulic control unit (HCU)
  • Anti-lock brake control module
  • Front and rear wheel speed sensors
  • Front and rear wheel speed sensor rings
  • Stability control sensor cluster
  • Stability/traction control switch
The ABS prevents wheel lock-up by monitoring the wheel speed sensors and actuating the HCU modulating the brake pressure to prevent wheel lockup. By preventing the wheels from locking up, the driver is able to maintain steering control and stop in the shortest possible distance under most conditions. The traction control system utilizes the same components as the ABS to prevent wheel spin and help maintain vehicle control during acceleration. The roll stability control (RSC) system utilizes the same components as the ABS and the traction control systems and also monitors the steering wheel position sensor and the stability control sensor cluster to assist in stabilizing the vehicle during abrupt maneuvers.
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The ABS module is self monitoring. The module will carry out a preliminary electrical check of the hydraulic pump motor by turning the pump ON for approximately 1/2 second either when the ignition switch is turned to the RUN position and the brake pedal is not pressed or when the vehicle is in motion and at vehicle speeds above 20 km/h (12 mph). The ABS module will also carry out a wheel speed sensor self-test by sending a reference voltage to all of the wheel speed sensors through their circuitry when the ignition switch is turned to the RUN position, with or without brake pedal application. If a malfunction is detected in the pump or wheel speed sensors, the ABS module will shut down and disable the anti-lock system. Normal power assisted braking, however, remains.
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Visual Inspection Chart
Mechanical Electrical

  • Base brake system
  • Brake booster vacuum hose
  • Hydraulic control unit (HCU)
  • Steering components and suspension components
  • Tire size
  • Wheel speed sensor ring
  • ABS module
  • Battery junction box (BJB) fuse(s):
    • 19 (40A)
    • 22 (40A)
  • Brake fluid level switch
  • Brake pressure transducer
  • Smart junction box (SJB) fuse(s):
    • 6 (15A)
    • 34 (5A)
  • Stoplamp switch
  • Wheel speed sensor
  • Wiring, terminals or connectors


You may need to have the dealer run a scan test to determine the DTC fault codes. Then go from there. Autozone can't read these codes as tehy are chassis codes. They only can read powertrain codes.

Good luck. please rate.

Jan 25, 2011 | Mercury Mariner Cars & Trucks

1 Answer

My abs and handbrake light stay on every two days and off after in my honda civic 1500cc yr 2004.its a five door civic


This indicates you have an issue with your ABS control unit. ABS is a system that "pumps" the brakes in rapid succession to prevent wheel lockup during an emergency start. A common cause of sliding in wet weather, etc. To do this a computer control module uses plungers to open and close the brake fluid flow to the brake in miliseconds..so while you are pressing on brake pedal hard... the system is actually applying and releasing the brake in rapid succession (miliseconds) to prevent skid, etc. When teh computer module goes bad the ABS and Parking brake light will stay illuminated. There shoudl be an ABS fuse in your vehicle (please refer to your manual) that can be removed. Remove this fuse and check it for dirt, blown, cracks, or corosion. Replace the fuse and listen with the motor off if you hear a hum noise this would indicate the motor is running continuously for the brakes and is another indicator of a bad control. With the fuse removed both lights should stay continuously lit. If the motor is running continuously this can blow the ABS motor.. your brake system will still function with the fuse removed, but test it with a slow roll (no gas hand pushed car) The ABS controller is quite pricey to replace in the vehicle and should be referred to a licensed facility such as a dealer. YES dealers are high but to have this job done properly you need to have the vehicle raised on a platform. Your local brake shop, muffler shop, shadetree wont be able to do this control repair properly.

Jun 11, 2010 | 2004 Honda Civic

1 Answer

Brake and abs lights stays on in a 2003 gmc safari wile driving after a small period of time. put new pads and there's no leaks in the calipers


Have the ABS Distribution Unit/Computer checked at the dealer.

NOTE: ABS Unit located under the vehicle, under the drivers seat. Listen to it with the vehicle running with no brake on... if you hear ABS motor running continuously, unplug ABS fuse in fuse block under hood to turn ABS motor off and be able to use vehicle in the meantime whether you decide to get the ABS fixed or not.. This will not affect brake operation, but will disable ABS feature. ABS and Brake idiot lights will remain on. No way to turn them off short of having the correct repair done. ABS Distribution Unit/Computer is very expensive part and requires expensive labour for replacement.

May 31, 2010 | 2003 GMC Safari

2 Answers

Abs light on accord 1992


ABS control unit recognizes system related problems and causes ABS warning light to come on and stay on under any of following conditions:
  • ABS pump runs longer than 2 minutes.
  • Vehicle is driven with parking brake on longer than 30 seconds.
  • One rear wheel is locked.
  • Wheel speed sensor does not transmit a signal.
  • Vehicle is driven on extremely rough road.
  • Low battery voltage.
  • Operation time of solenoid valves exceeds a specified value and control unit indicates an open circuit in solenoid circuit.
  • Output signals from control unit are not transmitted to solenoid valves.
  • Temporary loss of traction due to excessive cornering speed or starting from stuck condition (mud, snow or sand).

Nov 19, 2009 | 1992 Honda Accord

2 Answers

2002 Suburban 1500 - ABS Light On


No doubt the control module is out, and it continue to operate when the ignition key is off due to a circuit fault. You can disable it easily by pulling the 60 amp fuse in the under hood fuse box (it is listed on the panel as ABS). Note that this disables the ABS braking feature and traction control, so be very careful when driving. The part can be purchased on the GM global parts site, about $600-$700 for the module. This will be the second time this has gone out for me and GM is not sympathetic, rather "pathetic", for a part to fail so often.

Apr 22, 2009 | 2002 Chevrolet Suburban 2500

1 Answer

Can a replaced non programmed abs affect auto gearbox


The ABS control unit does need to be coded to the vehicle. After coding the control unit, an End-Belt run test must be performed. I know that you will also have transmission faults stored, because the Trans warning is set since the control unit has not been coded
and the control units communicate constantly during engine operation. The trans uses abs input for shift characteristics and helps with power reduction during evasive driving control. A dealer should be able to code and perform the end run test and usually charge about an 1hr fee. They will also need to quick delete other fault memories.

Mar 16, 2009 | 2001 BMW 5 Series

1 Answer

ABS indicator is on and beaping


The ABS control unit is failing, this is a very common issue with the 98 and 99 model Passats. You will need to have the ABS control unit replaced. You can now purchase the ABS control unit by itself but it is still pricey. Depending on which pump you have will determine which control unit you need to get. The run around $600 - $750.00 plus labor to install. The control unit needs to be installed by some one with a factory type scanner, as the new unit will need to be coded for that vehicle.

Nov 04, 2008 | 1998 Volkswagen Passat

2 Answers

ABS hydraulic control unit


Go to Module Master. I had the same problem sent mine in and came back. took less then 5 minutes to R/R. www.modulemaster.com

Prior to 2004, Durangos with 4 wheel ABS use the Kelsey Hayes Dodge controller attached to the hydraulic unit. Durangos with just rear wheel ABS use the Kelsey Hayes 125 located separately from the hydraulic unit.
2004 and later Durangos use the Bosch 5.4 controller.

Kelsey Hayes Dodge 1) Disconnect the negative battery cable.
2) Push the harness connector locks to release the locks, then remove the connectors from the CAB.
3) Disconnect the pump motor connector.
4) Remove screws attaching CAB to the HCU.
5) Remove the CAB.

Kelsey Hayes 125 1) Push the CAB harness connector lock to release the lock and remove the connector from the controller.
2) Remove the RWAL valve harness connector from the controller.
3) Remove the controller mounting screws and remove the controller from the mounting bracket.

Bosch 5.4 1) Pull out the side locking tab on the Bosch controller as shown.
2) Remove the connector.
3) Remove the 6 screws and separate the controller from the hydraulic unit.

durango.jpg 2008 Dodge Durango
kh_dodge_location.gif Kelsey Hayes Dodge Location
kh310_location.gif 1997 and earlier Durangos using the Kelsey Hayes 310
kh125_location.gif
Kelsey Hayes 125 controller for Dodge trucks with rear wheel ABS only

Jul 12, 2008 | 2000 Dodge Durango

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