Kia Optima: InspectionIn 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.
RemovalInterior Trim. Repair procedures
Replacement
Door Scuff Trim Replacement
•
Put on gloves to protect
your hands.
•
...
ECM Terminal And Input/Output signal
ECM Terminal Function
Connector [CHTG-AG]
Pin
No.
Description
Connected to
1
Ignition Coil (Cylinder #2) control output [W ...
Inspection
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the roof trim.(Refer
to the BD group - "Roof trim")
3.
Disconnect the panoram ...