Toyota Sienna Service Manual: Problem symptoms table
HINT: Use the table below to help determine the cause of the problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. If necessary, repair or replace the faulty parts.
TIRE AND WHEEL SYSTEM 
Precaution
1. REMOVAL AND INSTALLATION TIRE PRESSURE
WARNING VALVE AND TRANSMITTER
(a) When installing a tire, make sure that the tire
pressure warning valve and transmitter does not
interfere with the tire ...
Inspection
1. INSPECT TIRES
(a) Check the tires for wear and proper inflation
pressure.
Cold tire inflation pressure
(b) Using a dial indicator, check the runout of the tires.
Tire runout:
1.4 mm (0.0 ...
Other materials:
Problem symptoms table
POWER SLIDE DOOR SYSTEM
Symptom
Suspected Area
Power slide door LH does not operate when switch* is
pressed (* switch indicates satellite switch for power
slide door LH and power slide door control switch LH)
ECU-B fuse
Power slide door main switch ...
When servicing full-time 4wd vehicles
The full-time 4WD SIENNA is equipped with the open
center differential system.
If incorrect preparations or test procedures are used, the
test will not only be unsuccessful, but may be dangerous
as well.
Therefore, before beginning any such servicing or test,
be sure to check the following ...
Fatigue alert
General information
The system can detect decreasing alertness or
fatigue of the driver during long, monotonous
trips, for instance on highways. In this situation, it
is recommended that the driver takes a break.
Safety information
Warning
The system cannot serve as a substitute for the
driver's pe ...
