Toyota RAV4 (XA40) 2013-2018 Service Manual: Solar sensor (for automatic air conditioning system)
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 solar sensor
- Using a screwdriver, pull out the solar sensor, then disconnect the connector.
Hint:
Tape the screwdriver tip before use.
Inspection
- Inspect solar sensor
- Using an ohmmeter, connect the positive lead to terminal 2 and the negative lead to terminal 1, then measure the resistance between the terminals.
Standard resistance 
Notice:
The connection procedure for using a digital tester such as a toyota electrical tester is shown above. When using an analog tester, connect the positive (+) lead to terminal 1 and the negative (-) lead to terminal 2 of the a/c solar sensor.
Hint:
- As the inspection light is moved away from the sensor, the voltage increases.
- Use an incandescent lamp for inspection. Bring it within 30 cm (11.8 In.) Of the a/c solar sensor.
If the result is not as specified, replace the solar sensor.
Installation
- Install solar sensor
- Connect the connector, and then push in the solar sensor.
- Connect cable to negative battery terminal
- Check srs warning light
- Check the srs warning light (see page rs-37).
Evaporator temperatur sensor
Removal
Remove air conditioning unit
Remove the air conditioning radiator (see page ac-
185).
Remove evaporator temperature sensor
(see page ac-193)
Inspection
Inspect evapo ...
Heater relay
On-vehicle inspection
Inspect relay (marking: htr)
Measure the resistance of the htr relay.
Standard resistance
If the result is not as specified, replace the relay. ...
Other materials:
Intake air temperature circuit malfunction
Description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf)
meter, monitors the iat.
The iat sensor has a built-in thermistor with a resistance that varies according
to the temperature of the
intake air. When the iat is low, the resistance of the thermist ...
Oxygen (a/f) sensor signal stuck
Hint:
Although the dtc titles say oxygen sensor, these dtcs relate to the
air-fuel ratio (a/f) sensor.
Sensor 1 refers to the sensor mounted in front of the three-way
catalytic converter (twc) and
located near the engine assembly.
Description
The a/f sensor generates a voltage* ...
Rear wheel alignment
adjustment
Inspect tire
Inspect the tire (see page tw-1).
Measure vehicle height
Measure the vehicle height (see page sp-3).
Inspect toe-in
Standard toe-in
If the toe-in is not within the specified range, inspect the
suspension parts and replace them if necessar ...
