Hyundai Tucson: Auto Lighting Control System / Auto Light Sensor Repair procedures

Hyundai Tucson (LM) 2010-2015 Service Manual / Body Electrical System / Auto Lighting Control System / Auto Light Sensor Repair procedures

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 IPM 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.

	Tail lamp	Head lamp
ON	1.0 ± 0.10V
OFF	2.3 ± 0.20V

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the photo & auto light sensor (A) from crash pad upper side by using a flat-up screwdriver.

3.	Remove the auto light connector.

Installation

1.	Reconnect the auto light connector.

2.	Install the auto light sensor.

Auto Light Switch Repair procedures

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

Immobilizer System

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Other information:

Hyundai Tucson (LM) 2010-2015 Service Manual: Specifications
Specifications ItemSpecificationPower sourceDC 14.4V (-) groundFrequency range / Channel spaceFM : 87.5 ~ 108.0 MHz / 100 KHzAM : 531 ~ 1602 KHz / 9 KHzTuning typePLL SYNTHESIZED TUNINGImpedance2 ohm x 4Antenna80 pF 75 ohmDark currentMAX 2mA (Head unit only)S/NFM : MIN 50 dBAM : MIN 40 dB GP ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Alternator Specifications
Specification Alternator ItemSpecificationRated voltage13.5V, 120ASpeed in use 1,000 ~ 18,000 rpmVoltage regulatorIC Regulator built-in typeRegulator Setting VoltageExternal mode Refer to below graphInternal mode14.55 ± 0.3V Temperature GradientExternal mode0 ± 3 mV / °CInternal mode-3.5 ± ...