Ambient Light Sensor: Testing and Inspection

2011 Toyota Landcruiser V8-5.7L (3UR-FE)SECTION Testing and Inspection




LIGHTING (EXT): AUTOMATIC LIGHT CONTROL SENSOR: ON-VEHICLE INSPECTION

1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR

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





Standard Voltage:





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





(c) Reconnect the M2 sensor connector.

(d) Check the waveform of the M2 sensor connector.





Waveform:





HINT
If the ambient light becomes brighter, width A becomes narrower.

If the result is not as specified, there may be a malfunction in the sensor.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.