13454901-13454902-13454903

1.

Turn ignition switch OFF.

2.

Remove the under covers (A, B).

Tightening torque:

9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

note

When removing the under cover (B), unfasten the mounting bracket bolts and then remove the under cover and mounting bracket assembly.

3.

Disconnect the vacuum pump connector (A).

4.

Disconnect the vacuum hose (A).

5.

Loosen the vacuum pump bracket bolts (A), and then remove vacuum pump and bracket.

Tightening torque:

19.6 ~ 29.4 N.m (2.0 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)

6.

Remove the 2 bolts, and then remove the bracket from vacuum pump.

1.

Check the brake warning lamp in the IGN ON position.

note

Brake warning lamp is ON as below conditions.

1.

Parking brake warning

2.

Low brake fluid level warning

3.

Low brake vacuum pressure warning

-

Vacuum pump is abnormal condition

-

Vacuum pump CAN communication is abnormal condition

-

Vacuum switch is abnormal condition

2.

Check that the brake warning lamp is ON after the release the parking brake with a sufficient brake fluid level.

If the brake warning lamp is ON, check the below points.

(1)

Is the brake warning lamp ON within 5 seconds after IGN ON? (CAN Timeout Error)

note

CAN Timeout Error ; The brake warning lamp is ON when the communication fails more than 2 seconds between vacuum pump and cluster.

	▶ Reinstall the vacuum pump connector after removing it. And if the brake warning lamp is ON within 5 seconds after IGN ON, replace the vacuum pump.
	▶ Go to Step 2).

(2)

Is the brake warning lamp ON within 45 ~ 55 seconds?

	▶ Brake vacuum switch is normal condition.
	▶ Go to Step 3).

(3)

Is the brake warning lamp ON within 15 ~ 35 seconds after removing the vacuum hose from the brake booster?

	▶ Replace the vacuum pump.
	▶ Vacuum pump is normal condition.

1.

Installation is the reverse of removal.

2.

Tighten the vacuum pump mounting bolts to the specified torque.