Toyota Sienna Service Manual: Brake
GENERAL MAINTENANCE
1. INSPECT BRAKE LINE PIPES AND HOSES
HINT:
Check the entire circumference and length of the brake hoses using a mirror as required in a well-lighted area.
Turn the front wheels fully right or left before checking the front brakes.
(a) Check all the brake lines and hoses for:
- Damage
- Wear
- Deformation
- Cracks
- Corrosion
- Leaks
- Bends
- Twists
(b) Check all the clamps for tightness and connections for leakage.
(c) Check that the hoses and lines are clear of sharp edges, moving parts and the exhaust system.
(d) Check that the lines are installed in grommets passing through the center of the grommets.
2. INSPECT FRONT BRAKE PADS AND DISCS
HINT:
(See page BR-26)
(a) If a squealing or scraping noise is heard from the brakes while driving, check the pad wear indicator.
If there are traces of the indicator contacting
3. INSPECT REAR BRAKE PADS AND DISCS
HINT:
(See page BR-32)
4. REMOVE REAR BRAKE LININGS AND DRUMS
HINT:
(See page BR-39)
Engine
GENERAL MAINTENANCE
HINT:
Inspect these items when the engine is cold.
1. INSPECT DRIVE BELT
HINT:
(See page EM-6)
2. REPLACE SPARK PLUGS
HINT:
(See page IG-8)
3. INSPECT AIR FILTER
(a) ...
Chassis
GENERAL MAINTENANCE
1. INSPECT STEERING LINKAGE
(a) Check the steering linkage for looseness or
damage.
Check that:
Tie rod ends do not have excessive play.
Dust seals and boots are not da ...
Other materials:
Inspection
1. INSPECT BRAKE CYLINDER AND PISTON
(a) Check the brake cylinder bore and front disc brake
piston for rust or scoring.
2. INSPECT PAD LINING THICKNESS
(a) Using a ruler, measure the pad lining thickness.
Standard thickness:
12.0 mm (0.472 in.)
Minimum thickness:
1.0 mm (0.039 in.)
3. ...
Checking the messages
Display the message inbox screen.
Select the desired message from the list.
Check that the message is displayed.
E-mails: Select “Mark
Unread” or “Mark Read” to
mark mail unread or read on
the message inbox screen.
This function is available when “Update Read Stat ...
Active test
HINT:
Performing an ACTIVE TEST enables components
including the relays, VSV (Vacuum Switching Valve), and
actuators, to be operated without removing any parts.
The ACTIVE TEST can be performed with an intelligent
tester. Performing an ACTIVE TEST in the first step in
troubleshooting is one ...