Hyundai Elantra: Auto Lighting Control System / Auto Light Sensor Repair procedures
Check if the auto light control operates like a timing chart
shown below. Tail lamp output and head lamp (Low) output is controlled
based on the auto light sensor's input (illumination intensity) when the
Auto Light Switch in Multi-Function Switch is turned ON, and the
vehicle is in IGN1 or IGN2 ON Mode. If IGN1 = ON, BCM detects this
voltage, and if the voltage exceeds rated voltage, then auto light
failure occurs. (below 4V or above 6V)
• |
Failure Occurrence : If auto light failure occurs, the head
lamp must be turned ON regardless of sun light level. This is to prevent
the head lamp from being turned OFF in case of auto light failure
during night time.
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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.
1. |
Disconnect the negative (-) battery terminal. |
2. |
Remove the auto light sensor (A) from crash pad upper side by using screw (-) driver. |
3. |
Disconnect the auto light sensor connector. |
1. |
Reconnect the auto light sensor connector. |
2. |
Install the auto light sensor. |
Description
It's a system that uses illumination sensor to automatically
turn ON the tail lamp and head lamp based on the change in surrounding
environment's illumination condition. It activate ...
Other information:
Hyundai Elantra AD (2016-2020) Owners Manual: Additional Safety Precautions
Passengers should not move out of or change seats while the vehicle is moving.
A passenger who is not wearing a seat belt during a crash or emergency stop can
be thrown against the inside of the vehicle, against other occupants, or be ejected
from the vehicle.
Do not use any accessories on s ...
Hyundai Elantra AD (2016-2020) Service Manual: Idler Repair procedures
Removal and Installation
1.
Remove the drive belt.
(Refer to Timing System - "Drive Belt")
2.
Remove the idler (A).
Tightening torque :
39.2 ~ 49.0N.m (4.0 ~ 5.0kgf.m, 28.9 ~ 36.2lb-ft)
3.
Install in the reverse order of removal.
Inspection
Check the idler for excessive oil le ...