Write up: Soft Brake Pedal? ABS Module Bleed (J-Scan)
04-01-2023, 05:50 PM
#21
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Join Date: Apr 2023
Location: North Country, Canada
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Thanks
This write up saved me a lot of time rebleeding lines when my issue was ABS related. Also introduced me to Jscan. So thanks again, that app returns huge value for the cost.
10-13-2023, 05:32 PM
#22
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Join Date: Oct 2023
Location: placentia, ca
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brakes bleeder tool
[QUOTE=Rednroll;4385995]Introduction:
In this write-up I'm going to show the least expensive and best way to perform an ABS Brake Module Bleed using the OBD J-Scan app.
Observed Problems where you may want to perform this task:
- You are experience a soft brake pedal.
- You've bled your brake lines multiple times, and are certain you are not able to get anymore air out of your brake lines but your brake pedal still feels soft.
- You suspect your ABS module is bad, and would like to confirm that part is bad before making an expensive part replacement.
- You've replaced your ABS brake module and now need to bleed the module and would like to perform the bleed yourself instead of taking it to the dealership.
- Your brake fluid is old/dirty and you want to perform a COMPLETE brake fluid replacement flush
Tools/Parts Needed:
1. OBD-II Wireless Adapter (Wifi or Bluetooth)
I'm using a V-tech Wifi OBD-II adapter which I purchased in 2010. It was an inexpensive $20 adapter
2. A Smartphone or Tablet Device (to install the J-scan app)
3. OBD JScan App
Android: https://play.google.com/store/apps/d...hl=en_US&gl=US
iOS: https://apps.apple.com/us/app/obd-jscan/id1445903514
4. 11mm Wrench (Front Brake Bleeder Valves)
5. 10mm Wrench (Rear Brake Bleeder Valves)
6. Dot 3 Brake Fluid (1QT)
7. DIY Brake Bleeder Tool
- Empty Plastic Bottle with a cap (Clear preferred)
- 2ft of 1/4" ID Clear Tubing
??? - Why would you need to drill a hole near the top of container for the clear tubing? why not just insert the tubing in the open top without the cap. all these extra steps make no sense at all. No tubing hole or air vent holes are needed since the end of the tubing will be at the bottom of the container, submerged in the brake fluid.
In this write-up I'm going to show the least expensive and best way to perform an ABS Brake Module Bleed using the OBD J-Scan app.
Observed Problems where you may want to perform this task:
- You are experience a soft brake pedal.
- You've bled your brake lines multiple times, and are certain you are not able to get anymore air out of your brake lines but your brake pedal still feels soft.
- You suspect your ABS module is bad, and would like to confirm that part is bad before making an expensive part replacement.
- You've replaced your ABS brake module and now need to bleed the module and would like to perform the bleed yourself instead of taking it to the dealership.
- Your brake fluid is old/dirty and you want to perform a COMPLETE brake fluid replacement flush
Tools/Parts Needed:
1. OBD-II Wireless Adapter (Wifi or Bluetooth)
I'm using a V-tech Wifi OBD-II adapter which I purchased in 2010. It was an inexpensive $20 adapter
2. A Smartphone or Tablet Device (to install the J-scan app)
3. OBD JScan App
Android: https://play.google.com/store/apps/d...hl=en_US&gl=US
iOS: https://apps.apple.com/us/app/obd-jscan/id1445903514
4. 11mm Wrench (Front Brake Bleeder Valves)
5. 10mm Wrench (Rear Brake Bleeder Valves)
6. Dot 3 Brake Fluid (1QT)
7. DIY Brake Bleeder Tool
- Empty Plastic Bottle with a cap (Clear preferred)
- 2ft of 1/4" ID Clear Tubing
??? - Why would you need to drill a hole near the top of container for the clear tubing? why not just insert the tubing in the open top without the cap. all these extra steps make no sense at all. No tubing hole or air vent holes are needed since the end of the tubing will be at the bottom of the container, submerged in the brake fluid.