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:
Inspection
1. INSPECT RUNOUT OF DIFFERENTIAL RING GEAR
(a) Using a dial gauge , check the runout of the ring
gear.
Maximum runout:
0.07 mm (0.0028 in.)
If the runout is greater than the maximum, replace
the ring gear with a new one.
2. INSPECT DIFFERENTIAL RING GEAR BACKLASH
(a) Using a dial gauge, ...
Short in CAN Bus Lines
DESCRIPTION
The CAN bus wires are considered to be shorted when the resistance between
terminals 6 (CANH) and
14 (CANL) of the DLC3 is below 54 Ω.
Symptom
Trouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3
is below 54 Ω.
...
Rear combination light assembly
COMPONENTS
REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE REAR COMBINATION LIGHT ASSEMBLY
Remove the 2 bolts.
Disengage the 2 pins and separate the rear
combination light assembly as shown in the
illustration.
Disconnect the connector a ...
