Toyota RAV4 manuals

Toyota RAV4 Service Manual: Solar sensor circuit (passenger side)

Toyota RAV4. Solar sensor circuit (passenger side)


Description

The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning auto mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases.

The air conditioning amplifier detects changes in the output voltage from the solar sensor.

Toyota RAV4. Solar sensor circuit (passenger side)


Wiring diagram

Toyota RAV4. Solar sensor circuit (passenger side)


Inspection procedure

  1. Read value of intelligent tester (solar sens-p)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on and turn the intelligent tester main switch on.
  3. Select the item below in the data list, and read the value displayed on the intelligent tester.

Toyota RAV4. Read value of intelligent tester (solar sens-p)


Ok: the display is as specified in the normal condition column.

Toyota RAV4. Read value of intelligent tester (solar sens-p)




  1. Inspect cooler (solar sensor) thermistor

Toyota RAV4. Inspect cooler (solar sensor) thermistor


  1. Remove the solar sensor.
  2. Measure the resistance of the sensor.
  3. Connect the ohmmeter's positive (+) lead to terminal 1 and the negative (-) lead to terminal 2 of the solar sensor.

Standard resistance


Notice:

The connection procedure for using a digital tester such as an electrical tester is shown above. When using an analog tester, connect the positive (+) lead to terminal 2 and the negative (-) lead to terminal 1 of the solar sensor.

Hint:



  1. Check wire harness (solar sensor - air conditioning amplifier)

Toyota RAV4. Check wire harness (solar sensor - air conditioning amplifier)


  1. Disconnect the f1 sensor connector.
  2. Disconnect the e37 amplifier connector.
  3. Measure the resistance of the wire harness side connectors.

Standard resistance




Replace air conditioning amplifier

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