Brake Fluid (W/ Ecb) -- Bleeding |
*1 : The listed order must be followed.*2 : If air enters the brake reservoir tube No.1 hose due to declined brake fluid level, be sure to bleed the brake reservoir tube No.1 hose.
- CAUTION:
- Bleeding without the intelligent tester may result in air remaining in the brake hydraulic system. As this can cause an accident, be sure to use the intelligent tester for air bleeding.
- NOTICE:
- Refer to the intelligent tester operator's manual for further details.
- HINT:
- Move the shift lever to the P position and apply the parking brake before bleeding the brakes.
- Add brake fluid to keep the level between MIN and MAX lines of the reservoir while bleeding the brakes.
- If the pump motor operates while air remains inside the brake reservoir tube no.1 hose, the air will enter the actuator, resulting in difficulty in bleeding. Keep the 2 ABS motor relays removed until instructed to reinstall them to prevent air from entering the brake reservoir tube no.1 hose.
- The actuator pump motor and solenoid can be operated by the driver even if the engine switch is off.
- Although a buzzer may sound due to declined accumulator pressure during bleeding, keep on bleeding.
- If DTCs indicating a malfunction in the ABS motor relay or pressure sensor are stored after bleeding, clear the DTCs when instructed during or after bleeding.
| Item | Work procedure |
| Brake fluid (replacement) *1*2 | 1.Disable brake control (ECB). 2.Bleed the front brake system. 3.Bleed the rear brake system. |
| Brake master cylinder and stroke simulator (replacement) *1 *2 | 1.Perform accumulator zero down (before replacement). 2.Disable brake control (ECB) (remove motor relay ) (before replacement). 3.Bleed the brake reservoir tube No.1 hose. 4.Bleed the front brake system. 5.Bleed the rear brake system. 6.Perform accumulator zero down. |
| Brake actuator (replacement) *1 | 1.Perform accumulator zero down (before replacement). 2.Disable brake control (ECB) (remove motor relay ) (before replacement). 3.Bleed the brake reservoir tube No.1 hose. 4.Bleed the front brake system. 5.Bleed the rear brake system. 6.Perform accumulator zero down. |
| Front brake (removal, installation, and disassembly) *1 | 1.Disable brake control (ECB) (removal, installation, and disassembly). 2.Bleed the front brake system. |
| Rear brake (removal, installation, and disassembly) *1 | 1.Disable brake control (ECB) (removal, installation, and disassembly). 2.Bleed the rear brake system. |
| 1. DISABLE BRAKE CONTROL |
Move the shift lever to the P position and apply the parking brake.
Connect the intelligent tester to the DLC3 with the engine switch off.
 |
Remove the 2 ABS motor relays with the engine switch off from the engine room relay block No.3.
Turn the engine switch on (IG).
- NOTICE:
- Do not start the engine.
Turn the intelligent tester on and select "DIAGNOSTIC MENU"→"ABS/VSC"→"ECB UTILITY"→"ECB INVALID".
| 2. FILL RESERVOIR WITH BRAKE FLUID |
- NOTICE:
- If brake fluid leaks onto any painted surface, clean it off completely.
Add brake fluid into the reservoir.
- Fluid:
- SAE J1703 or FMVSS No.116 DOT3
 |
| 3. BLEED BRAKE RESERVOIR TUBE NO.1 HOSE |
Connect SST to the reservoir with the brake reservoir pressure adapter.
- SST
- 09992-00242
09992-00350
Connect the vinyl tube to the bleeder plug of the actuator.
Loosen the bleeder plug of the actuator.
Use the SST to boost the pressure in the reservoir.
- Standard:
- 50 to 80 kPa (0.5 to 0.8 kgf/cm2,7.3 to 11.6 psi)
Drain approximately 100 cc of fluid.
Tighten the bleeder plug and boost the pressure in the reservoir again. Then loosen the bleeder plug to bleed air.
- NOTICE:
- Repeat the above procedures 5 times or more.
When air is completely bled from the hose between the reservoir and the actuator, tighten the bleeder plug.
- Torque:
- 8.3 N*m{85 kgf*cm, 74 ft.*lbf}
| 4. BLEED MASTER CYLINDER |
- HINT:
- If the master cylinder has been reinstalled or if the reservoir becomes empty, bleed the air from the master cylinder.
Disconnect the brake lines from the master cylinder.
 |
Slowly depress and hold the brake pedal.
Cover the outer holes with fingers, and release the brake pedal.
 |
Repeat (b) and (c) 3 or 4 times.
Connect the brake lines to the master cylinder.
- Torque:
- 15 N*m{155 kgf*cm, 11 ft.*lbf}
| 5. BLEED FRONT BRAKE SYSTEM |
- NOTICE:
- Bleed the air from the wheel furthest from the master cylinder.
Connect the vinyl tube to the bleeder plug.
 |
Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.
When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
 |
Repeat (b) and (c) until all the air in the fluid is completely bled out.
Using SST, tighten the bleeder plug completely.
- Torque:
- 11 N*m{112 kgf*cm, 8 ft.*lbf}
Repeat the above procedures for other wheels to bleed the air from the brake line.
| 6. BLEED REAR BRAKE SYSTEM |
- NOTICE:
- Bleed the air by following the prompts displayed on the intelligent tester.
Turn the engine switch off.
Install the 2 ABS motor relays to the engine room relay block No.3.
- NOTICE:
- Install ABS motor relays before bleeding the air from the rear brake system.
Turn the engine switch on (IG) and turn the intelligent tester on.
Cancel "DISABLE BRAKE CONTROL" on the intelligent tester.
- HINT:
- If the brake control has been disabled by the tester.
Clear the DTC.
Turn the intelligent tester on and select "DIAGNOSTIC MENU"→"ABS/VSC"→"ECB UTILITY"→"ECB INVALID".
With the brake pedal depressed, bleed air from the bleeder plug on the rear disc brake cylinder LH.
- NOTICE:
- Keep the fluid inside the reservoir above the LOW level by replenishing.
- HINT:
- Depress and hold the brake pedal.
- After the solenoid operates for approximately 30 seconds, release the brake pedal to stop the solenoid.
- Repeat the procedures until air is completely bled from the rear brake system.
- The ECB warning light comes on and the buzzer sounds while bleeding, but they do not indicate a malfunction.
- Torque:
- 11 N*m{112 kgf*cm, 8 ft.*lbf}
Tighten the bleeder plug after bleeding.
With the brake pedal depressed, bleed air from the bleeder plug on the rear disc brake cylinder RH.
- NOTICE:
- Keep the fluid inside the reservoir above the LOW level by replenishing.
- HINT:
- Depress and hold the brake pedal.
- After the solenoid operates for approximately 30 seconds, release the brake pedal to stop the solenoid
- Repeat the procedures until air is completely bled from the rear brake system.
- The ECB warning light comes on and the buzzer sounds while bleeding, but they do not indicate a malfunction.
Tighten the bleeder plug after bleeding.
- Torque:
- 11 N*m{112 kgf*cm, 8 ft.*lbf}
Cancel "DISABLE BRAKE CONTROL" on the intelligent tester.
| 7. PERFORM ACCUMULATOR ZERO DOWN |
- CAUTION:
- Be sure to perform this procedure before removing of the actuator.
- NOTICE:
- Perform accumulator zero down by following the prompts displayed on the intelligent tester.
Connect the intelligent tester to the DLC3 with the engine switch off.
Turn the intelligent tester on and repeat the following steps 5 times.
Turn the engine switch on (IG).
Turn the intelligent tester on and select "DIAGNOSTIC MENU" → "ABS/VSC" → "ECB UTILITY" → "ZERO DOWN" on the intelligent tester.
When the buzzer sounds, turn the engine switch off.
- NOTICE:
- Keep the fluid inside the reservoir above the LOW level by replenishing.
- HINT:
- Accumulator pressure is released and accumulated repeatedly, which circulates the fluid inside the accumulator every time accumulator zero down (accumulator depressurizing) is performed.
- The pump motor rotates and accumulator is pressurized every time the engine switch is turned from off to on (IG).
| 8. CHECK BRAKE FLUID LEVEL |
After performing accumulator zero down (accumulator depressurizing), adjust the fluid level in the master cylinder reservoir to the MAX level.
- HINT:
- After performing accumulator zero down (accumulator depressurizing), fluid is built up in the accumulator by turning the engine switch on (IG) and the fluid level lowers.
- If the fluid level is adjusted without performing accumulator zero down (accumulator depressurizing), fluid is sent from the accumulator to the reservoir. The fluid level may exceed the MAX level, but it is normal.
| 9. CLEAR DTC |
| 10. LINEAR VALVE OFFSET LEARNING |
When the brake actuator assembly is replaced, perform linear valve offset learning. (Click here)