Toyota Sienna Service Manual: 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. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE
(a) Inspect the front disc brake pad support plate (No.
1) and front disc brake pad support plate (No. 2).
Make sure that they have sufficient rebound, no deformation, cracks or wear, and have had all rust and dirt cleaned off
4. INSPECT DISC THICKNESS
(a) Using a micrometer, measure the disc thickness.
Standard thickness: 28.0 mm (1.102 in.) Minimum thickness: 26.0 mm (1.024 in.)
Disassembly
1. REMOVE FRONT DISC BRAKE BUSH DUST BOOT
(a) Using soft jaws on the vise, hold the front disc brake
cylinder mounting LH in the vise through aluminum
plates.
(b) Using a screwdriver and ham ...
Reassembly
1. INSTALL FRONT DISC
(a) Aligning the matchmarks, install the front disc.
HINT:
Select the installation position where the disc has
the minimum runout.
2. INSPECT DISC RUNOUT
(a) Temporaril ...
Other materials:
Removal
1. PRECAUTION
CAUTION: Be sure to read "PRECAUTION" thoroughly before
servicing.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait for 90 seconds after disconnecting the cable to
prevent the airbag working.
3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD
4. REMOVE STEE ...
Display
When the sensors detect an obstacle, the following displays inform
the driver of the position and distance to the obstacle.
Multi-information display
Front corner sensor operation
Rear corner sensor operation
Rear center sensor operation
Audio system screen
Intuitive parking ...
Catalyst System Efficiency Below Threshold
DTC P0420 Catalyst System Efficiency Below Threshold
(Bank 1)
DTC P0430 Catalyst System Efficiency Below Threshold
(Bank 2)
MONITOR DESCRIPTION
The ECM uses the sensors mounted in front of and behind the three-way
catalyst (TWC) to monitor its
efficiency. The first sensor, an Air Fuel ratio ...
