Kia Rio: Auto Light Sensor Inspection

In the state of IGN1 ON, when multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to auto light sensor's input.

The auto light control doesn't work if the pin sunlight supply (5V regulated power from Ignition 1 power to sunlight sensor) is in short circuit with the ground.

If IGN1 ON, The BCM monitors the range of this supply and raises up a failure as soon as the supply’s voltage is out of range. Then this failure occurs and as long as this is present, the head lamp must be turned on without taking care about the sunlight level provided by the sensor.

This is designed to prevent any head lamp cut off when the failure occurs during the night.

Auto Light Switch Inspection

Operate the auto light switch, then check for continuity between terminals of multi-function switch connector. ...

Auto Light Sensor Removal

1. Disconnect the negative (-) battery terminal. 2. Remove the photo & auto light sensor (A) from crash pad upper side by using screw ( ...

See also:

Removal
1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds. 2. Turn the steering wheel so that the fr ...

Seat Belt Switch Description
Via the seat belt/Door switch, the ISG function can detect that the driver has fastened the seat belt/door. If the driver has not fastened the seat belt/door, the ISG function reacts as follo ...

Overhead Console Lamp Inspection
Remove the overhead console lamp assembly then check for continuity between terminals. If the continuity is not as specified, replace the overhead console lamp assembly. ...