Tech Tip: Uncovering Brake Fluid Leaks on Acura Integras

Tech Tip: Uncovering Brake Fluid Leaks on Acura Integras

The brake fluid level on 1994 Integras may be low in the ABS reservoir, and fluid may appear to be leaking from under the label on the ABS accumulator. The likely cause is that the ABS accumulator internal O-ring is damaged, allowing brake fluid to leak out.

The brake fluid level on 1994 Integras may be low in the ABS reservoir, and fluid may appear to be leaking from under the label on the ABS accumulator. The likely cause is that the ABS accumulator internal O-ring is damaged, allowing brake fluid to leak out.

DIAGNOSIS:
Remove the label from the ABS accumulator.
– If the hole behind the label is wet with brake fluid, continue to Corrective Action.
– If the hole is not wet, clean the accumulator and use powder to locate the leak.

CORRECTIVE ACTION:
Replace the accumulator and O-ring.
1. Remove the air cleaner housing assembly.
2. Relieve the system pressure. Refer to service manual page 19-152 for the proper procedure.
3. Disconnect the 14P and 2P connectors from the modulator.
4. Remove the six brake lines from the modulator.
5. Remove the wire harness clip from the modulator bracket.
6. Remove the three modulator mounting nuts, then remove the modulator from the car.
7. Remove the two mounting bolts and remove the accumulator from the modulator. See Figure 1.
Note: Do not place the modulator in a bench vise. You could damage the fittings.
8. Do not release the nitrogen from the accumulator at this time. The accumulator should be stored, fully pressurized, for 30 days for warranty parts call-in. If it is not called in after 30 days, the accumulator should then be depressurized and discarded.
9. Install the O-ring on the new accumulator.
10. Install the accumulator on the modulator. Tighten the mounting bolts to 9.8 Nm (7 ft.-lbs.).
11. Install the modulator in the car. Tighten the mounting nuts to 22 Nm (16 ft.-lbs.).
12. Reconnect the brake lines, wire harness clip and electrical connectors. Tighten the brake lines to 19 Nm (14 ft.-lbs.).
13. Fill the modulator and brake reservoirs with Genuine Honda brake fluid.
14. Bleed the brake system. Refer to service manual page 19-6.
15. Bleed the ABS modulator. Refer to service manual page 19-153.

MODULATOR FINAL BLEEDING PROCEDURE:
16. Connect a piece of 3/8 inch O.D. hose to the pressure side of a hand-held vacuum pump.
17. Remove the filler cap from the modulator reservoir. Leave the plastic insert in the modulator opening.
18. Start the engine. Hold the vacuum pump hose against the modulator opening insert. To pressurize the reservoir, pump the vacuum pump until you feel resistance (1 to 3 strokes). See Figure 2.
19. While keeping the reservoir pressurized, have an assistant turn off the engine and then slowly open the modulator bleeder.
20. Close the bleeder when brake fluid stops running into the tube.
21. Repeat steps 18 through 20 five times to purge the air from the modulator.
22. Clear any codes in the ABS control unit memory by removing the ABS B2 fuse in the underhood ABS fuse box for three seconds.
Technical service bulletin courtesy of: Acura Parts Express.

You May Also Like

Mullen Road Tests Solid-State Polymer Battery Pack

The results met or exceeded all requirements targeted for the first drive cycles for energy usage and driving range.

Mullen Automotive began Class 1 EV cargo van road testing with an integrated solid-state polymer battery pack. Vehicle road testing began on Feb. 26 at Mullen’s Commercial Tech Center in Troy, MI.

Mullen’s latest phase of solid-state polymer battery testing began in January with the installation of the battery pack into the Class 1 EV cargo van for testing system compatibility between the vehicle and pack. Recent performance testing has included on-road drive cycles as well as Dyno testing at an EPA-certified lab located in Northville, MI, Mullen said.

TEXA Releases IDC5 CAR 76.5.0 Update

IDC5 CAR 76.5.0 is characterized by over 2600 new possible selections for the major makes on the market worldwide.

TurnOnGreen, Endliss Power Team up to Expand EV Charging

TurnOnGreen said it will leverage EPI’s expertise in administering and executing power purchase agreements with commercial clients.

Autel’s ADAS Bay Max Vehicle Lift

Learn how this lift integrates mechanical repair, four-wheel alignment, and ADAS calibration, prioritizing efficiency and space utilization in your shop.

Switch EV Trainer Provides Tailored EV Tech Training

The Switch EV Trainer includes all of the components of a modern EV drivetrain on a compact, insulated, mobile platform.

Other Posts

Tool Time Podcast: SATA USA

In this all new episode of the Tool Time Podcast, Nadine and Eric sit down with Chris Springer of SATA USA.

Elywhere Launches in North America

Elywhere chargers can be configured to support power in the 1 MW range, providing solutions for electric fleets.

#3 Screwdriver “Tips”

What appears as one of the most basic tools in your box is far from it.

#2 Calipers & Micrometers

Calipers and Micrometers are essential measuring tools when exact precision is required.