Toyota Sienna Service Manual: Inspection
1. INSPECT SEAT HEATER SWITCH LH
- Measure the resistance of the seat heater switch when the switch is operated.
Resistance
If the result is not as specified, replace the switch.
HINT: As the dial is being turned, the resistance changes gradually.
- Push the seat heater switch ON and check that the
seat heater switch indicator illuminates when the
switch is operated.
OK
If the result is not as specified, replace the switch.
- Check the seat heater switch illumination.
OK
If the result is not as specified, replace the seat heater switch or bulb.
2. INSPECT SEAT HEATER SWITCH RH
- Measure the resistance of the seat heater switch when the switch is operated.
Resistance
If the result is not as specified, replace the switch.
HINT: As the dial is being turned, the resistance changes gradually.
- Push the seat heater switch ON and check that the seat heater switch indicator illuminates when the switch is operated.
OK
If the result is not as specified, replace the switch.
- Check the seat heater switch illumination.
OK
If the result is not as specified, replace the seat heater switch or bulb.
3. INSPECT FRONT SEAT BACK HEATER ASSEMBLY LH
- Measure the resistance of the seatback heater.
Resistance
If the result is not as specified, replace the seatback heater assembly.
4. INSPECT FRONT SEAT BACK HEATER ASSEMBLY RH
- Measure the resistance of the seatback heater.
Resistance
If the result is not as specified, replace the seatback heater assembly.
5. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY LH
- Measure the resistance of the seat cushion heater.
Resistance
If the result is not as specified, replace the seat cushion heater assembly.
6. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY RH
- Measure the resistance of the seat cushion heater.
Resistance
If the result is not as specified, replace the seat cushion heater assembly.
On-vehicle inspection
1. CHECK SEAT HEATER CONTROL (WIRE HARNESS
SIDE)
Disconnect the connector from the seat heater
control.
Measure the voltage and resistance of each
terminal of the wire harne ...
Front seat assembly (for Flat Type)
COMPONENTS
...
Other materials:
Other functions
Switching between outside air and recirculated air modes
Press .
The mode switches between outside air mode (
appears on the
display) and recirculated air mode (
appears on the display) each
time the button is pressed.
Defogging the windshield
Defoggers are used to defog the windshield a ...
Bulb locations
Front
Vehicles without daytime running lights or with bulb type daytime
running lights
Headlight high beam and daytime
running lights (if equipped)
Headlight low beam
(halogen bulb)
Fog light (if equipped)
Front turn signal/parking and
front side marker lights
Vehic ...
Remote Up / Down Function does not Operate
DESCRIPTION
If the REMOTE UP/DOWN function does not operate, any of the following
troubles may be the cause:
There is an open or short circuit in the wiring between the power
window master switch and the
applicable power window regulator switch.
The power window master swit ...
