How To Bleed Air From Abs Module

The brake fluid resolve is normally. A second manual brake bleeding is then required to remove any air remaining in the system. Start bleeding the system and keep topping up the res. Check out this video to learn how to bleed your brakes and purge your own brake fluid if you have soft brakes or have replaced your brakes. The first thing to do to bleed the ABS module is to start the car or turn the key to where the battery is on. Re: 2006 GMC Sierra brake bleeding question. Hope it helps. The ABS system is made up of the ABS module, and ABS sensors at each wheel. paddle bleeding 3. Therefore, a conventional bleed procedure should be adequate to remove all air from the brake system. Replacing a Failed ABS Module. (Replacing the brake fluid is mandatory for some ABS systems. Sometimes, even after bleeding, wheel cylinders will still have air in them. Brakes are a little spongier, and the ABS sounds like it keeps trying to kick in when you stop at very low speeds, such as in a parking lot. ABS is not an 'unused' circuit, it is part of the hydraulic system - you bleed your brakes, by definition, you bleed the ABS circuit. Obviously best way is to bleed the lines that go into the ABS module first then to bleed the actual module itself the easiest way is to have someone sit in the car with the ignition on and have their foot just on the brake pedal and then spin one wheel. Take it out on a dirt road or wet slick parking lot and activate the ABS and re-bleed as above. I hate Blazer's ABS bleeding procedure, you are correct about using a factory scan tool (TECH II) to activating the ABS pump motor to bleeding. Buy online, pick up in-store in 30 minutes. Most ABS modules do have bleeding valves, but a lot of times these aren’t enough to get all the air out. 2015 RTSE6 Looking to do a complete bleed out of the brake system. AFS Headlamp Reset. The module of the anti-lock braking system can form corrosion after a while. I can firm it up (still can bottom out, but there is some good resistance) when the engine is not running, but as soon as I turn the car on, the pedal goes to the floor super easy. It may be necessary to bleed the system at all four wheels if a low fluid level allowed air to enter the system, or the brake pipes have been disconnected at the master cylinder or combination valve. Yes, this is an expensive fix and would NOT recommend you doing it yourself. Most of the times, the trapped air will rise to the surface,. The ABS (anti-lock braking system) on the Honda Accord demands regular maintenance to ensure consistent performance. While bleeding the system I've pumped three quarts through and find no evidence of any air as I bleed the fluid through a clear tube into a clear glass jar. My problem is this truck has four-corner ABS and since I basically need to do a complete restoration on the brakes, I'm counting on the ABS module picking up some air and ABS modules are not easily bled manually (if at all). 2015 RTSE6 Looking to do a complete bleed out of the brake system. Now, let's get into the process of bleeding your brakes. Re-install the battery. The correct procedure is to bleed it manually (or with a power bleeder) while the BMW service computer is hooked up to it. Normally they do this by commanding the solenoids on and off with a Tech2 diagnostic tool while the system is bleeding. They have to hook it up to a computer in order for the correct valves to open in the ABS module so that the air can escape. (Replacing the brake fluid is mandatory for some ABS systems. In fact C1477 is not listed in the trouble shooter. More step by step detail operation instruction,pls watch the video guide at end of article. Flushing is the process of removing the fluid in a hydraulic brake system in order to remove contaminants in the fluid. Pumping the foot brake with air present high up in the system is liable to cause air pocket problems in the ABS unit with a visit to Fiat then required so that Examiner can open the ABS valves in sequence. Buy online, pick up in-store in 30 minutes. I've read conflicting opinions - some say it requires a special dealer scan tool to open valves in the ABS module; whereas others say it can still be done without the scan tool. The entrapped air tends to rise. ABS systems are VERY sensitive to air bubbles. Connect a scan tool to the data link connector (DLC) and select current and history DTCs. Most ABS Computers exercise the valves during the six-second self-test process when the yellow warning light is on. Arguments Generally Against Bleeding ABS Yourself: Some people find they can not get all the air out of the ABS system if they bleed it themselves. Refer to Bleeding the Brake System procedure in the Brake Operating System section of this manual. See All ABS Control Module for Ford F-150 We've got a wide rang of top-quality Ford F-150 ABS Control Module of all the best brands in the industry at an affordable rate. Total of one gallon of fluid. Ok this can be a fun task. After talking with the dealer, I am convinced they don't know how to fix it telling me that the module is bad or it could be the master cylinder. We replaced the whole line connecting from the ABS module to the rear wheels. I have to somehow find a way to have the ABS module pump the brake fluid. then I cycles the ABS module 5 times and the rebled the entire system again (went threw 1 gallon of DOT3!) after I was done I cycled the abs system one more time and the brakes feel like they are brand spanking new!. Step one of the diagnostic is to perform the brake bleed procedure. I'm going to be replacing the ABS pump on my 01 RS (along with everything else in the brake system except the hardlines) - and I'm looking for another way to cycle the ABS pump besides going for a drive and locking up the brakes. No ABS light or brake light on in the dash. More step by step detail operation instruction,pls watch the video guide at end of article. Release the ABS button. Should I buy used or new. I'm trying to find out how to bleed the system manually without using a scan tool. Your brake lines still need to be bled at each caliper manually. With ABS brakes, there is no release port in the brake mechanism. Hello boys, How do I bleed the brakes after replacing ABS module on a 09 120 1kd it's the module on the RHS under the bonnet not the one under the reservoir , thinking about the air that will go in when the pipes are taken off and on , read iI might need a scan tool haven't got one yet. The book does not state any different procedure for ABS vs non ABS systems. The GKTECH ABS Delete line kits are assembled by us in-house in Australia using quality UK made fittings and braided stainless steel, teflon lined lines. Make sure you keep the reservoir topped up and don't introduce air into the system. We found that the bleeder screw leaked air in slightly even when in the closed position. The procedure cycles the system valves and runs the pump in order to purge the air from the secondary circuits normally closed off during non ABS/TCS/ICCS mode operation and bleeding. ANTI-LOCK BRAKE SYSTEM & TRACTION CONTROL 1995 Volvo 850 1995 BRAKES Volvo - Anti-Lock & Traction Control Systems 850 * PLEASE READ THIS FIRST * CAUTION: See ANTI-LOCK BRAKE SAFETY PRECAUTIONS article in the GENERAL INFORMATION section. I was kidding her about all the excersise she was. 1997-2006 Expedition & Navigator - ABS brake bleed problem - I just had to replace all my steel brake lines on my 1997 exp. lines on the reservoir. bleeding brakes with out a vacume pump is alot easier with 2 people. Otherwise you will never get teh air out of the pumps. • Select the Automatic Bleed Procedure on the scan tool. The wheel speed sensors are located inside the center of the wheel and in some cases, inside the transmission. After diagnosing that the electrical part of the ABS module was the cause for all the instrument panel lights to be lit, we sent out the module for repair. The Kelsey-Hayes 4WAL ABS system has been used on many GM light trucks through the years. While bleeding the system I've pumped three quarts through and find no evidence of any air as I bleed the fluid through a clear tube into a clear glass jar. Bleed the hydraulic brake system. There is a diagnostic scan tool called " Dealer tool". Bleed the hydraulic brake system. Now, let's get into the process of bleeding your brakes. How To Bleed Abs Brakes With A Scan Tool Bad news: Some vehicles require the use of a hideously expensive proprietary ABS scan tool to cycle the pump and valves to purge the last of the air. It involves performing a manual brake bleeding, followed by use of the scan tool to cycle and bleed the HCU pump and solenoids. Sure enough, system wouldn't bleed the conventional way, so plugged PP2000 in. The auto bleed procedure is used on Delco Bosch 5 equipped vehicles. you will still need to bleed the calipers as normal. The only way to purge the air is to get to a dealer and have them hook up a Tech2 and cycle the ABS module until the air is out. How To Bleed Ford Expedition Abs Brakes >>>CLICK HERE<<< A Ford garage stated that it should be possible to bleed air from the unit with something as basic as a Some people get lucky and the brakes and abs are fine. A second manual brake bleeding is then required to remove any air remaining in the system. To flare is to spread the end of a metal tube so that a connector can be installed. I have learned a lot here and have usually been able to find answers to my questions/issues through searching the threads. bleeding brakes with out a vacume pump is alot easier with 2 people. We have bled 5 more quarts of fluid through the system trying to get air out the conventional way, there is air trapped somewhere leading to a soft pedal. This ABS module is found on many Chevrolet vehicles, including the Silverado, S10, Tahoe, and Suburban. Granted the ABS system on the Bandit has a bunch of 90 degree turns and the module itself is really low, hence its perfect for trapping air. anyhow i could have started a new thread but i think this is a good place for the question how to bleed abs module MANUALLY without driving and no pressure bleeder. I have an 07 Ford Escape Hybrid here with code C1477 in the ABS module. The bleeder screw was further tightened until it better seated in the caliper and did not leak in the closed position. I then took it to a BMW dealer to reset and program the unit. Install the powertrain. Some ABS modulators have special bleed screws to help you vent the trapped air when bleeding the system. How To Bleed Abs Brakes With Scan Tool Bad news: Some vehicles require the use of a hideously expensive proprietary ABS scan tool to cycle the pump and valves to purge the last of the air. On other cars if you are just flushing the old fluid out with new fluid, a pressure bleeder works fine. Including bleeding, labour etc. The connector is located in the fuse box at the lift kick panel. I'm sure I'll have air in the ABS module and was wondering if any of you guys knew of a preferably low price scan tool that will do the ABS autobleed? I've got an older OTC Genisys, but the update software kit to get the ABS functions is about $790. That will get you a hard pedal. Any body got a DIY guild on how to bleed the abs unit. To bleed the ABS system there is a special C clamp that you put on the ABS unit to collapse the pistons to open them to remove traped air as you bleed the brakes. You should only need an IDS type scanner to do a "service bleed" if you now have air in the ABS module, if not just make sure the master cylinder does not run out of fluid and you should be fine, either gravity or pressure bleeding will work just fine. One of the various reasons for the ABS light to stay on is the faulty wheel speed sensor. Therefore, a conventional bleed procedure should be adequate to remove all air from the brake system. DO NOT use DOT 5 silicone brake fluid. Turn off the ignition, remove wire. The brakes do work and will activate the abs (tested on driveway) but I’m not confident to drive on the road as there is little to no resistance on the peddle which goes to the floor. And air can sit in the lines and cause the brakes to be spongy and less effective. An air bubble is an air bubble. connect the abs module while in the engine module, vcds freezes then says no response from controller. The ABS system is made up of the ABS module, and ABS sensors at each wheel. After talking with the dealer, I am convinced they don't know how to fix it telling me that the module is bad or it could be the master cylinder. You can bleed the calipers just fine without any special equipment. I tried bleeding the FR but then starting reading about all this ABS stuff with the special tool to move the actuators. 2015 RTSE6 Looking to do a complete bleed out of the brake system. Total of one gallon of fluid. Find a dirt road and engage the abs. Bleeding or removing this air is very important. I followed the correct sequence to bleed (right rear, left rear ect) but couldn't get the brake pedal to firm up. Hit "Go!" This triggers the ABS pump. I find the module and pump from ebay used for around 300, and if I bought a new pump it is 330, and then the module rebuilt that comes with a lifetime warranty is 230. On the C and H bodies through 95 the ABS pump has its own reservoir, and the master cylinder has a line that goes to the res for the ABS pump, the chances of having any air left in the ABS pump is very slim as the air bubbles in the pump will bleed up into the master cylinder. If air gets into an ABS module (especially on something like a Tahoe) it's nearly impossible to get it out without a force bleed from a scanner. Some ABS modulators have special bleed screws to help you vent the trapped air when bleeding the system. To clear the code the ABS module must be reset. I hate Blazer's ABS bleeding procedure, you are correct about using a factory scan tool (TECH II) to activating the ABS pump motor to bleeding. This will require bleeding the brakes, running the function via scan tool and bleeding the brakes again. Then, inspect the fuses, the ABS controller and the wheel speed sensors. In The Shop: ABS Modulator Failure Harley ABS. Remove the stick from the brake pedal. have lots of patience. So we had to drill it out & put in a helicoil. The ABS module, that is the electrical brain that the connector is attached to isn't typically the problem. ) rupture of the pistons in your brakes (requiring a caliper rebuild) 3. So if you get air into brake system at the master cylinder, you will absolutely end up with air in the ABS module. Kelsey-Hayes rear wheel antilock (RWAL) systems have been gotten a bum rap in recent years. Ever since I first bleed my brakes years ago, The pedal goes down quiet far. have some one sit in the car and pump the brake till it gets firm. Repeat until only fluid comes out when the bleeder is opened. On the C and H bodies through 95 the ABS pump has its own reservoir, and the master cylinder has a line that goes to the res for the ABS pump, the chances of having any air left in the ABS pump is very slim as the air bubbles in the pump will bleed up into the master cylinder. Autel Maxicheck Pro is an OBD2 scanner with ABS Brake Bleed Function : Maxicheck Pro will help to get air that is trapped in the ABS actuator module out when bleeding your brake lines. Just be careful not to let master run dry or you will have bigger problems with it and ABS module getting air in it. Inspect for visual damage and leaks and repair, as needed. Due to a small technical oversight by myself the fluid in the resevior got very low and I'm thinking there's air in the system some where. Jeep Grand Cherokee 1999-2004: Why is the ABS Light On? Even though your vehicle will stop, your ABS system may not assist you when you need it the most. ABS systems are bled using a scan tool. • Scan tool cycles the ABS solenoids for 20 seconds. okay I figured I'd make this video to show that the Autel Maxicheck can do a obd2 Auto bleed on vehicles with ABS brakes I ran into a situation where I thought I maybe my ABS module had air trapped in it and everywhere online everybody said it would take a GM Tech II scanner to do the Auto bleed and everybody online shows that will bleed taking place but they've all got either a. The ABS solenoids have to be cycled to get all the air out. Getting the air out is a routine process known as "bleeding," but it's not as straightforward as it used to be thanks to an invention called ABS (or "anti-lock braking system"), which your truck most likely has. Others do not and require the use of a scan tool to cycle the ABS solenoids while you bleed the system. If you suspect air in the ABS system, you can bleed the lines at the ABS pump as well. Raise and vehicle on a suitable support. I'm willing to buy the pressure bleeder if anyone feels that would really solve my problem of getting the air out of the system and that I don't first need to run the ABS pump. Sounds like I just need to keep bleeding the system. When doing so, one person unscrews the bleed screw while the other depresses the brake pedal. The auto bleed procedure is used on Delco Bosch 5 equipped vehicles. Anyway, seems I got some air into the lines as the pedal is noticeably softer. ABS Braking Basics. 2001 Chevrolet Corvette 2001 BRAKES Anti-Lock/TCS - Corvette MY. When the system is under pressure (thermostat open, engine running), you can check for air at the bleed screws, if you like. Some ABS modulators have special bleed screws to help you vent the trapped air when bleeding the system. Otherwise there is not alot that can be done,you can try going out and slamming on the brakes hard enough to engage the ABS(need to do about 5-10 times) and then re-bleed on the spot as air will enter the ABS pump again if you drive back home. So there should be fewer contaminants to be forced into the ABS unit. Some have reported that they bleed teh brakes then took it out on gravel and locked up the wheels forcing the pump to cycle and then bleed tehm again. I still have squishy brakes and I can hear an air sound coming from the ABS module located on. RF Caliper Bleed a. Somebody said I need to bleed the abs module using a scanner. I know there is a function that can be put to good use with a Vagcom cable so the ABS can bleed itself with a bit of help from me. To cycle the abs just find a low traction area without other cars or objects and mash on the. The fluid Antilock braking systems are even less tolerant of contaminated fluid and air than non-ABS. here is also some good info i have found on the operation of the abs module Bleeding ABS Systems: Brake and Front End pictures 3, 4 and 5 are really good info i believe. The anti-lock braking system on a vehicle is an additional safety feature found on many modern vehicles. You shouldnt have any problem in getting a spare key cloned. i have a 2001 silverado, the ABS light is on. To troubleshoot ABS problems on a Ford vehicle, first cycle the engine to rule out a passing glitch. Active tests, on the other hand, make it possible for you to activate and manipulate components. Air bleed the ABS modulator using the following steps: * Connect the MUT with the correct ROM and system pack. This will mix the new w/ old fluid still in the system. When bleeding, keep the amount of the fluid between the Min. anyhow i could have started a new thread but i think this is a good place for the question how to bleed abs module MANUALLY without driving and no pressure bleeder. Push the plunger of the syringe and force the brake fluid up the circuit. The recommended way to do this is, of course, an expensive Tech 1 scan tool that is hard to find as well. Perhaps in order to remove air bubbles in the ABS unit. The connector is located in the fuse box at the lift kick panel. So how should I proceed to get the air out of the ABS? Edit: 2000 OBW. A scan tool is only needed with a DBC-7 anti-lock braking system, and then only if air entered the ABS modulator during brake service. My tech2 code reader, when I go through special functions, reads that it "can't connect to ABS module". The computer is used to run a service program and cycle all the valves, so that you can get the air out. "The service ABS hydraulic control unit is supplied filled with brake fluid. I'm concerned because when I changed the front pads, I had to remove the bleeder valve to access the bolt that holds the unit together. So you should be able to bleed just the base brake system, in the order of LR, RF, RR, LF. After I got all the air out, I started up the car and put it in drive and hit the brakes (had it on 4 jackstands and in 4wd). The problem is if you are not paying attention when replacing calipers or brake lines and you let the brake fluid gravity bleed out you get air in the ABS module. Kelsey-Hayes RWAL Antilock Brakes. The primary threats to a brake system are water, dirt, and air. I'm not real sure how firm the brakes were prior to the repair, but there's no way it's good enough the way it is now. have some one sit in the car and pump the brake till it gets firm. Just used a vacuum instead of pumping just to be on the safe side. Air would then be introduced into the entire system. The modulator may have eight to 10, or more, ABS/traction control solenoid valves, plus various check valves and dead-end ports. Afternoon Dave If you are not getting any air out if the ABS module & the wheel bleeders when bleeding then you don't have any air. It should be taken into consideration how many shops (in addition to individuals) buy the software and that would make a LOT of us happy to have this function. I had heard about bleeding nipples on the ABS unit, but when I looked at the control unit, I didn't see any, so I just bled the system just like a normal bike. When it comes to knowing how to properly bleed ABS brakes, a modern car's ABS module can make things more difficult than they used to be. We have bled 5 more quarts of fluid through the system trying to get air out the conventional way, there is air trapped somewhere leading to a soft pedal. I've tied down the brake pedal for a couple of hours to let air out of the lines to the ABS module. This works the air out of the ABS module. After a full bleed to front and rear using a easybleed, the brakes are still a bit spongy. Push button on DLC for >1sec. Use the VAG-COM to check the coding of your new ABS module. Last year at this time my master and booster died. F30 (7,5A) Headlamp high beam-right. Please narrow the Anti Lock Brake Control Module results by selecting the vehicle. A Tech 2 or other high end unit is needed to activate the bleeding procedure to get the air out IF you get air into it. If it only bleeds down while running, and doesn't with engine off, Change the booster as well. Brake Antilock Control Unit/module problem of the 1999 Ford F-150 10 Failure Date: 07/08/2004 I drive a 1999 Ford F-150 pickup truck and have found that failure of either of the front wheel abs sensors makes it nearly impossible to bring the vehicle to a stop. They have to hook it up to a computer in order for the correct valves to open in the ABS module so that the air can escape. other than that, the abs light is supposed to come on when you're in the module. Sure enough, system wouldn't bleed the conventional way, so plugged PP2000 in. Clean the master cylinder fluid reservoir cover and surrounding area, then remove the cover. you do not need a tech2 to bleed the abs module. Then you need to depress the brake pedal. There appears to be brake coming from the module. VIN 1FMCU59HX7KA34013. Bleeding a master cylinder can seem like it takes forever. We replaced the whole line connecting from the ABS module to the rear wheels. Release the ABS button. Find helpful customer reviews and review ratings for FOXWELL NT630 P Automotive ABS Scanner OBD2 Scan Tools OBD II + ABS Bleeding Diagnostic Scanners Air Bag Engine Light Reset Tool at Amazon. So if you get air into brake system at the master cylinder, you will absolutely end up with air in the ABS module. The tech2 or a scan tool is used to bleed any air out of the abs solenoids. You can't do that by just cracking a line on the ABS module, as there are valves in there and they hold trapped air. but it does work, then you re bleed the system again after and you should get a hard pedal. Original service manual says to bleed like regular brakes. You use the scan tool to tell the ABS to self-bleed, then you bleed the brakes normally. I have Snap On Mt2500 scanner, and I tried to access to ABS but my scanner does not support it, nor other scanners except Tech1. Surprise! RM8k to for a new unit. To flush without the Ford NGS star tester (bongo bucks) the best way is to bleed the system into a container at each wheel while continually checking/adding new dot 3 fluid. Common Causes of ABS Light Comes. In that case he will need to be attached to a scan tool that can activate the ABS system in order to completely purge the system. Some ABS modulators have special bleed screws to help you vent the trapped air when bleeding the system. The first thing to do to bleed the ABS module is to start the car or turn the key to where the battery is on. Plug in your VCDS diagnostic cable and select module 3 - ABS brakes. 2002 Cadillac Escalade ABS Control Module(EBCM) Repair & Return Service. This is actually one of the most common reasons for why there ends up being a problem with the anti-lock braking system. actuated for proper bleeding. While it's circulating fluid you should bleed the system at each corner. The good news is that on some GM vehicles, a scan tool isn't needed to bleed ABS brakes. Follow procedure. ) How to Replace ABS Control Module. That is because it can be hard to reach the bleeder valves with the car on the ground and also that it takes a special tool to cycle the valves in the ABS module to let the air out. then I cycles the ABS module 5 times and the rebled the entire system again (went threw 1 gallon of DOT3!) after I was done I cycled the abs system one more time and the brakes feel like they are brand spanking new!. It all depends on how good the valves in the ABS system seal. Starting with the bleeder valve at the back of the car, open it until fluid starts to flow and then open the one in the front as well. Bleeding ABS brakes How to bleeding ABS brakes. and capture codes flashing in the red lamp. You may be able to take it out in the gravel and do panic stops making the abs kick in and hopefully purging some air. How do we go about bleeding the brakes? I figured we could use gravity to bleed the main brake system. The ABS Control Unit includes the Hydraulic Control Unit (HCU) and the Antilock Brake Module (ABM). Then go to the other caliper and bleed but you probably won't see any air if all went well. On other cars if you are just flushing the old fluid out with new fluid, a pressure bleeder works fine. The total including shipping was $270. SOME bikes and cars need the computer hooked up to manipulate the ABS valves to purge the air/fluid. i replaced the old one the only thing i need to do is to bleed the brakes. is there … read more. Bleeding ABS Module - EricTheCarGuy- Stay Dirty! Ericthecarguy. I've replace dozens of lines without spilling a drop of brake fluid. The service manual has me confused because it says that you have to disconnect the ABS unit before bleeding your brakes. Others do not and require the use of a scan tool to cycle the ABS solenoids while you bleed the system. You should reference the FSM if you are not brake experienced. Fill the syringe with brake fluid and open the bleeder and the reservoir. you CANNOT "gravity bleed" you need a good power bleeder attached to the master cylinder reservoir, like a motive, to pressurize it to 2-5 psi to force brake fluid (and air) downward and out through the caliper bleeder. Not there, wish it were. If you have replaced a brake hydraulic component and have introduced air in to the system, you need to use a diagnostic tool to cycle the ABS system in order to bleed all of the air from the system. , the dealer. Also replaced the ABS pump and bled that from all the lines. SRS Airbag Crash Data Reset Your airbag crash data module will be restored back to its factory condition after. To cycle the abs just find a low traction area without other cars or objects and mash on the. In this section, you'll find a part number cross-reference tool, parts and service literature, service locations, and answers to frequently asked questions. I mounted the ABS pump module back in the M3 in about 10 minutes after work last night. KirkW Rockstar. Hello everyone I dont know whether this has been posted before , but I wish to know the correct sequence of bleeding the ABS block , I have just put on a full set of pads and have bled the system and also flushed it through with Penrite 4 dot fluid and the brakes are still spongy , with no motor. I had bled the system at the master cylinder and all 4 wheels extensively multiple times. When the system is under pressure (thermostat open, engine running), you can check for air at the bleed screws, if you like. Pretty hard to run a brake shop and have to send vehicles out for brake bleeding. The simple remedy for this is to bleed your system of the air that is contained within. You can't do that by just cracking a line on the ABS module, as there are valves in there and they hold trapped air. Every automaker seems to do it their own way. So if you get air into brake system at the master cylinder, you will absolutely end up with air in the ABS module. BLEEDING BRAKE SYSTEM > PRESSURE BLEEDING > TCS MODULATOR ASSEMBLY 1. Hit "Go!" This triggers the ABS pump. There are a couple bleeder valves on top of the ABS module where you have to bleed next. My brakes were working fine before I did the 288mm brake upgrade,,After finishing the job, I bled off all 4 wheels like 15 times, and my brake pedal when pressed goes all the way to the fllor, now I finding out that my ABS pump had probably gone dry on fluid, and I need to bleed it off, I tried following the ross tech how to, and I am not getting anywhere, as far as I can read from it, it. You shouldn't have to worry about this usually. The connector is located in the fuse box at the lift kick panel. On problematic bleeding I've had luck elevating the end about four feet, waiting about five minutes and then bleeding them out. Check and see if you have a faulty speed sensor and check your steer angle sensor and make sure ignition voltage is good and on abs pump motor. I suggest you pull the fuses for the abs untill the service bleed is done. Active tests, on the other hand, make it possible for you to activate and manipulate components. 2 - Next we need to bleed the ABS portion of the system. modulemaster. i ended up taking it into GM, all good now. theres also a way to gravity bleed them too. Repair any DTCs prior to performing the ABS bleed procedure. Others do not and require the use of a scan tool to cycle the ABS solenoids while you bleed the system. If you are doing normal pad replacement and do not have an ABS light on you should be good to go, only when you have air in the system or a fault code (READ) ABS light on flashing or brakes not working properly you will need to see your dealer Harley Davidson Community here is a good read on ABS light. That will get you a hard pedal. Does the peddle do the same when engine is not running. To bleed the system without it you can open the bleed valve one wheel at a time [You can leave the master cylinder cap off - do not press the peddle during this way of bleeding] let. This has worked a few times on older ABS systems but never got it to work on. Kelsey-Hayes rear wheel antilock (RWAL) systems have been gotten a bum rap in recent years. And even the ABS system bleed is this: " 4. Including bleeding, labour etc. How To Bleed Air From Abs Module; 0 How To Bleed Air From Abs Module. F32 (30A. To bleed the system without it you can open the bleed valve one wheel at a time [You can leave the master cylinder cap off - do not press the peddle during this way of bleeding] let. theres also a way to gravity bleed them too. I was able to get most of the air out of the replacement modulator by placing the assembly flat on the ground with the open connections pointing straight up. Others do not and require the use of a scan tool to cycle the ABS solenoids while you bleed the system. I understand that a very pricey scan tool is necessary when bleeding the brakes on a 1995 silveraro. According to the factory service manual, the procedure for bleeding the brakes on my '95 Suburban is as follows: 1. It will fill the lines and the ABS and will fill the reservoir. If you mean the ABS/ESP pump, in VCDS: - select control module - 03 ABS Brakes - 04 Basic Settings - select "brake bleeding" from the drop-down menu You should probably do it with the rear right bleeder screw open I think, and afterwards you need to bleed the brakes again. This is the procedure for the lesser models so assume the st is the same. The module bleed ports are just two high points in the system. Therefore, any 1994 determination by the F1 circuit on ABS is irrelevant to modern-day concerns about ABS safety when ABS brakes cause drivers to overshoot icy intersections, find themselves unable to slow down prior to an icy curve, loose all brakes over pot holes, and to experience only a fraction of potential braking power on wet surfaces. Actually bleeding ABS braking systems is similar to the old conventional method. After talking with the dealer, I am convinced they don't know how to fix it telling me that the module is bad or it could be the master cylinder. Otherwise you will never get teh air out of the pumps. Bleeding or removing this air is very important. I still have no pedal pressure. In this section, you'll find a part number cross-reference tool, parts and service literature, service locations, and answers to frequently asked questions. there are normally two bleed nipples on the abs block, for fron and rear. ABS Bleeding. Should I buy used or new.