Toyota RAV4 (XA40) 2013-2018 Service Manual: Seat heater switch
Components
Removal
- Disconnect cable from negative battery terminal
Caution:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
- Remove switch base (see page ip-18)
- Remove seat heater switch
- Using a screwdriver, detach the 2 claws and remove the switch.
Hint:
Tape the screwdriver tip before use.
Inspection
- Inspect seat heater switch
- Measure the resistance of the seat heater switch when the switch is operated.
Standard resistance
For lh
For rh 
If the result is not as specified, replace the switch.
- Check that the seat heater switch indicator light illuminates when the switch is operated.
Ok
For lh 
For rh
If the result is not as specified, replace the switch.
- Check that the seat heater switch illuminates.
Ok
If the result is not as specified, replace the switch
Installation
- Install seat heater switch
- Attach the 2 claws to install the switch.
- Install switch base (see page ip-27)
- Connect cable to negative battery terminal
Lumbar support adjuster assembly
Inspection
Inspect lumbar support adjuster assembl
Check operation of the lumbar support adjuster.
Check if the lumbar support adjuster moves
smoothly when the battery is connect ...
Front seatback heater
Inspection
Inspect front seatback heater assembly
lh
Measure the resistance of the seatback heater.
Standard resistance
If the result is not as specified, replace the seatback
he ...
Other materials:
Diagnostic trouble code chart
Hint:
If no abnormality is found when inspecting parts, check the
skid control ecu and check for poor contact at the ground
points.
If a dtc is displayed during the dtc check, check the
circuit for the dtc listed in the table below. For details of
each dtc, refer to the page indicated. ...
Check for open circuit
For an open circuit in the wire harness in fig. 1,
Check the resistance or voltage, as described below.
Check the resistance.
Disconnect connectors a and c, and measure
the resistance between them.
Standard resistance (fig. 2)
Hint:
Measure the resistance while lightly s ...
Multiplex communication circuit
Description
The air conditioning amplifier communicates data with the ecm and combination
meter through the can
communication system.
Wiring diagram
Inspection procedure
Check dtc
Clear the dtc (see page ac-127).
Read the dtc (see page ac-127).
Result
Go to can ...
