Component Tests and General Diagnostics

LIGHTING (EXT): AUTOMATIC LIGHT CONTROL SENSOR: INSPECTION

INSPECTION

1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR (for Manual Air Conditioning System)





(a) Disconnect the F3 automatic light control sensor connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:





Standard Resistance:





Text in Illustration





If the result is not as specified, there may be a malfunction on the wire harness side.





(c) Reconnect the F3 automatic light control sensor connector.
(d) Connect an oscilloscope to the automatic light control sensor connector.

Text in Illustration









(e) Check the waveform.
OK:





HINT: If the ambient light becomes brighter, width A becomes narrower.
If the result is not as specified, replace the automatic light control sensor.
2. INSPECT AUTOMATIC LIGHT CONTROL SENSOR (for Automatic Air Conditioning System)





(a) Disconnect the F4 automatic light control sensor connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:





Standard Resistance:





Text in Illustration





If the result is not as specified, there may be a malfunction on the wire harness side.





(c) Reconnect the F4 automatic light control sensor connector.
(d) Connect an oscilloscope to the automatic light control sensor connector.

Text in Illustration









(e) Check the waveform.
OK:





HINT: If the ambient light becomes brighter, width A becomes narrower.
If the result is not as specified, replace the automatic light control sensor.