SOLAR SENSOR ON-VEHICLE INSPECTION


  1. CHECK AIR CONDITIONING SOLAR SENSOR


    1. Disconnect the A/C solar sensor connector.

    2. A01FI66E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Automatic Light Control Sensor (Solar Sensor))

      Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      6(CLTB) - 3(CLTE) IG OFF Below 1 V
      6(CLTB) - 3(CLTE) IG ON 11 to 14 V

      If the result is not as specified, repair or replace the wire harness or connector.

    4. A01FDOUE31
      Text in Illustration
      *a

      Component with harness connected

      (Automatic Light Control Sensor (Solar Sensor ))

      Remove the A/C solar sensor with the connector still connected.

    5. Apply battery voltage between terminals 6 (CLTB) and 3 (CLTE) of the A/C solar sensor.

    6. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Condition Specified Condition
      1(TSL) - 3(CLTE) Sensor is exposed to electric light 0.8 to 4.3 V
      1(TSL) - 3(CLTE) Sensor is covered with a cloth Below 0.8 V
      2(TSR) - 3(CLTE) Sensor is exposed to electric light 0.8 to 4.3 V
      2(TSR) - 3(CLTE) Sensor is covered with a cloth Below 0.8 V

      Note

      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 2 and negative (-) lead to terminal 1 of the solar sensor.

      Tech Tips


      • As the inspection light is moved away from the sensor, the voltage increases.

      • Use an incandescent lamp for inspection. Bring it about 30 cm (11.8 in.) from the solar sensor.

      If the result is not as specified, replace the automatic light control sensor (solar sensor).