Hyundai Accent (HC): Body Electrical System / Auto Lighting Control System

Contents:

Specifications

- Specifications

ItemsSpecifications
Rated voltage5V
LoadMax. 1mA (When head lamp lighting)
Illuminations (LUX)501.42 ± 0.31V
1002.63 ± 0.58V
1503.84 ± 0.84V

Components and Components Location

- Component Location

1. Auto light sensor
2. Head lamps
3. Lighting switch (Auto)
4. Tail lamps
5. BCM (Body Control Module)


Schematic Diagrams

- Circuit Diagram

Auto Light Switch

- Inspection

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

Switch PositionSwitcH TerminalResistance (Ω, ±3.5%)
OFF9-14680
AUTO / DRL
Tail lamp1680
Low beam1680

Auto Light Sensor

- Inspection In the state of IGN1 ON, when the 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.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. - Removal

1.Disconnect the negative (-) battery terminal.

2.Remove the photo & auto light sensor (A) from crash pad upper side by using screw (-) driver.

3.Remove the auto light connector.

- Installation

1.Reconnect the auto light connector.

2.Install the auto light sensor.

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Description and Operation

- Description System Overview The System offers the following features: – Human machine interface through a 1-stage button, for terminal switching and engine start. – Control of external relays for ACC / IGN1 / IGN2 terminal switching and STARTER, without use of mechanical ignition switch. – Steering column locking with an ESCL device; Monitoring of the vehicle status to insure safe activation of the ESCL.

Hyundai Accent (HC) (2017 - 2022) Service Manual: General Safety Information and Caution

- Precautions General Precautions Please read the following precautions carefully before performing the airbag system service. Observe the instructions described in this manual, or the airbags could accidentally deploy and cause damage or injuries. • Except when performing electrical inspections, always turn the ignition switch OFF and disconnect the negative cable from the battery, and wait at least three minutes before beginning work.

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