01-28-2015, 05:26 PM
DIY ABS Module Rebuild - ABS Pump Won't Shut Off - Issue Solved
12-30-2016, 03:12 PM
#162
01-25-2017, 11:47 AM
#163
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getting abs module off of abs assembly
Remove the ABS Module. For me, this sounded alot easier than it ended up being...
You will need to remove your air filter housing to have clear access to the module. It is approximately located under the Brake Fluid Reservoir.
Make sure to disconnect your negative battery terminal. There is 50amps that runs through one of the module connections.
Unscrew the 4 screws that hold the module on the ABS pump/housing with a torx bit. Please note that your ABS pump is directly under the ABS module and there is a harness that connects to it. You will also need to remove the harness on the rear of the module.
I had issues because my truck has 150,000 miles of Connecticut corrosion on it. Only one of the screws actually came off for me. The rest had to be removed with a cutting wheel and a dremel.
For future reference, these screws are M4 x 25mm. I bought some stainless steel ones with washers since all mine were ruined.
ALSO: You CAN drive without the ABS module in place - just make sure you pull the fuse and cover up the harnesses with some tape so debris doesn't get in them. If you do this, you WONT have ABS (obviously).
You will need to remove your air filter housing to have clear access to the module. It is approximately located under the Brake Fluid Reservoir.
Make sure to disconnect your negative battery terminal. There is 50amps that runs through one of the module connections.
Unscrew the 4 screws that hold the module on the ABS pump/housing with a torx bit. Please note that your ABS pump is directly under the ABS module and there is a harness that connects to it. You will also need to remove the harness on the rear of the module.
I had issues because my truck has 150,000 miles of Connecticut corrosion on it. Only one of the screws actually came off for me. The rest had to be removed with a cutting wheel and a dremel.
For future reference, these screws are M4 x 25mm. I bought some stainless steel ones with washers since all mine were ruined.
ALSO: You CAN drive without the ABS module in place - just make sure you pull the fuse and cover up the harnesses with some tape so debris doesn't get in them. If you do this, you WONT have ABS (obviously).
12-15-2017, 11:15 PM
#164
Since the recommended chip in this post is now obsolete, the replacement part is
https://www.digikey.com/product-deta...4-1-ND/4765902
This is per Digi-Key Engineering Technician.
https://www.digikey.com/product-deta...4-1-ND/4765902
This is per Digi-Key Engineering Technician.
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white89gt (12-16-2017)
11-25-2018, 05:41 PM
#165
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Pump still running after FET replaced
After Replacing The FET The pump is still running. I did notice that when I tested the FET and it seemed fine but I replaced it anyhow.
I did remove the solder and looked at the other side of the PCB. Nothing looked bad except the relay. It looked like it had deformed a bit from heat but was functional and in spec.
I also noticed the pumps power terminals looked pretty corroded. I attached a photo. When I tested the terminals they had little to no resistance between them or the case of the pump. Not sure what the resistance should be for this motor, and I also know that the resistance of DC motors vary on armature position.
I may just bit the bullet and get a refurbished assembly, anyone else had good luck with these?
ABS pump
I did remove the solder and looked at the other side of the PCB. Nothing looked bad except the relay. It looked like it had deformed a bit from heat but was functional and in spec.
I also noticed the pumps power terminals looked pretty corroded. I attached a photo. When I tested the terminals they had little to no resistance between them or the case of the pump. Not sure what the resistance should be for this motor, and I also know that the resistance of DC motors vary on armature position.
I may just bit the bullet and get a refurbished assembly, anyone else had good luck with these?
ABS pump
Last edited by Ethan Anderson; 11-25-2018 at 05:59 PM. Reason: Added picture
12-03-2018, 12:05 AM
#166
2009?
I have a 2009 Ford f-150 with the B1342 code. Pump does not appear to be running all the time. With all this experience could this be a simple solder reflow or maybe relay replacement? Any ideas would be greatly appreciated
12-03-2018, 01:20 AM
#167
If ford is still using the same design ABS system from the same supplier some of these solutions could apply to a 2009. I would hope that Fords supplier would have addressed these shortcomings by 09 but who knows. The main solution this thread addresses is the bad FET shorting and causing the pump to run unless the fuse is pulled. A second issue was the pump running for a few minutes after the truck is shut down. That sometimes can be caused by cracked solder joints on the relay pins.If the pump shuts down on its own, its not the FET.
This system was used on late 90s through mid 2004 at least but it is possible Ford used it on the next generations as well.
This system was used on late 90s through mid 2004 at least but it is possible Ford used it on the next generations as well.
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jlchafin (12-03-2018)
12-03-2018, 10:18 AM
#168
If ford is still using the same design ABS system from the same supplier some of these solutions could apply to a 2009. I would hope that Fords supplier would have addressed these shortcomings by 09 but who knows. The main solution this thread addresses is the bad FET shorting and causing the pump to run unless the fuse is pulled. A second issue was the pump running for a few minutes after the truck is shut down. That sometimes can be caused by cracked solder joints on the relay pins.If the pump shuts down on its own, its not the FET.
This system was used on late 90s through mid 2004 at least but it is possible Ford used it on the next generations as well.
This system was used on late 90s through mid 2004 at least but it is possible Ford used it on the next generations as well.
12-03-2018, 11:14 AM
#170
Mark
iTrader: (1)
Yes you can... pull the ABS fuses and cover up the pump face with foil and tape and I bagged the connector to keep it clean and moisture free. No bleeding involved... Once you remove the module from the pump you will understand how it works..
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jlchafin (12-03-2018)