Toyota Sienna Service Manual: Problem Symptoms Table
HINT: Use the table below to help determine the cause of the problem. Likely causes of the problem are indicated in descending order. Check each suspected area in order.
Repair or replace the faulty parts or perform adjustments as necessary.
STEERING SYSTEM 
Precaution
1. HANDLING PRECAUTIONS ON STEERING SYSTEM
(a) Be careful to replace the parts properly because
they could affect the performance of the steering
system and result in a driving hazard.
2. HANDLING ...
On-vehicle Inspection
1. CHECK STEERING WHEEL FREEPLAY
(a) Stop the vehicle and face the tires straight ahead.
(b) Rock the steering wheel gently up and down with
your hand, check the steering wheel freeplay.
Max ...
Other materials:
Inspection
1. INSPECT MASS AIR FLOW METER
Visually check for any foreign matter on the
platinum hot wire (heater) of the mass air flow
meter.
OK:
There is no foreign matter.
If the result is not as specified, replace the mass air
flow meter.
Measure the resistance according to the ...
Window defogger switch
INSPECTION
1. INSPECT WINDOW DEFOGGER SWITCH
Check the defogger switch illuminates.
Standard
If the result is not as specified, replace the switch
assembly or bulb.
Check the defogger timer.
Connect the positive (+) lead from the battery
to terminal 2 and ...
Diagnostic trouble code chart
If a trouble code is displayed during the DTC check, check
the circuit listed for that code. For details of each code, turn
the page mentioned below the "DTC No" in the DTC chart.
the "DTC No" in the DTC chart.
1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE
CODE CHART
TRANSPON ...
