Toyota Sienna Service Manual: Inspection
1. Inspect ignition switch assembly
(a) Measure the resistance of the switch.
Standard resistance 
If the result is not as specified, replace the switch assembly.
Removal
1. Disconnect cable from negative battery
terminal
2. REMOVE STEERING COLUMN COVER LOWER
(A) insert the key into the ignition key cylinder and
release the steering lock.
(B) turn the steeri ...
Installation
1. INSTALL IGNITION SWITCH ASSEMBLY
(a) Install the ignition switch with the 2 screws.
(b) Install the ignition switch connector.
2. INSTALL STEERING COLUMN COVER LOWER
(a) Attach the 4 claw ...
Other materials:
Hydraulic test
1. Perform hydraulic test
(a) Measure the line pressure.
NOTICE:
Perform the test at the normal operating ATF
(Automatic Transmission Fluid) temperature:
50 to 80°C (122 to 176°F).
The line pressure test should always be
carried out in pairs. One technician should
...
How to proceed with
troubleshooting
HINT:
Use this procedure to troubleshoot the front power seat
control system.
The intelligent tester should be used in steps 3 and 5.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CHECK
3 CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNI ...
Wiper switch
COMPONENTS
REMOVAL
1. REMOVE STEERING COLUMN COVER
2. REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY
Disconnect the connector.
Using a screwdriver, disengage the claw and pull
out the windshield wiper switch assembly.
NOTICE:
The claw will be broken if pressed hard.
HINT ...