Kia Optima: Inspection
Brake Booster
| 1. |
Inspect the check valve in the
vacuum hose, intensifier and the connecting section.
|
Do not remove the check valve from the vacuum hose. |
|
| 2. |
Check the boot for damage.
|
Vacuum Pump
| 1. |
Check the brake warning lamp
in the IGN ON position.
Brake warning lamp is ON as below conditions.
| 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)
|
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.
|
|
|
Brake Booster
1.
Turn ignition switch OFF and
disconnect the negative (-) battery cable.
2.
Remove the air duct (B) and air
cleaner assembly (A).
...
Brake Booster
1.
Installation is the reverse of
removal.
•
Before ins ...
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...
Removal
Installation