Kia Forte: Charging System / Wireless Power Charger (WPC)

Kia Forte 2019-2020 (BD) Service Manual / Body Electrical System / Charging System / Wireless Power Charger (WPC)

Specifications
Specifications

Items
Specification
Rated voltage
DC 13.5 V
Operating voltage
DC 8.5 - 16.0 V
Operating temperature
-22 to 167 °F (-30 to +75 °C)
Dark current
MAX. 1 mA
Output power
5 W
Output frequency
110 ± 5 kHz

Description and operation
Description

Wireless Power Charger System

During ACC or IG ON, battery voltage is supplied to the wireless power charger system to transmit an output of 5 W to mobile phone.

Mobile phones certified with the wireless charging standard WPC (Qi 1.2.2) or equipped with an exclusive wireless charging case can be used.

Wireless Power Charging System Flow Chart

1.

Supply vehicle power.

2.

Convert to AC. Generate electromagnetic field in 1st coil.

3.

Generate induced current in power receiver from electromagnetic induction.

4.

Generate AC in 2nd coil.

5.

Convert to DC.

6.

Charge battery.

System Configuration Diagram

1.

Instrument cluster : Alerts about contact with mobile phone.

2.

Wireless charging indicator : Displays the charging status.

3.

Integrated body control unit (IBU) :

(1)

Determines contact with mobile phone.

(2)

Stops charging during the activation of LF.

Major Functions of Wireless Power Charger System

1.

Charging Function

(1)

Activation method

a.

Close all doors of the car.

b.

Switch vehicle power to ACC or IG ON.

c.

Place the wireless charging-enabled mobile phone on the tray.

(2)

Charging status display

Mode
Charging LED display
Remark
Stand by for charging
LED turned OFF


Charging in process
Amber LED turned ON


Charging completed
Green LED turned ON


Charging error
Amber LED blinks

Blinks 10 times for 10 seconds, then LED is turned off for 50 seconds (total 60 seconds)


2.

Mobile phone neglect alert function

(1)

Activation method

a.

Key OFF when the phone is still charging.

b.

Check if there is a phone on wireless charging unit.

c.

Express notification message of the phone is left in vehicle on dashboard if the door is open while the phone is left in vehicle or the phone is left in the vehicle for more than 1 minute. (about 4-5 seconds)

3.

Overheating prevention

(1)

Activation method

a.

If the thermistor temperature inside the wireless charging module rises above a certain level (158 °F (70 °C)), charging will stop to protect the mobile phone battery.

  

The amber LED of the charging display lamp blinks 10 times for 10 seconds.

b.

the thermistor temperature falls below a certain level (149 °F (65 °C)), charging will restart.

  

When the charging function is restarted, the amber LED of the charging display lamp will be turned on.

4.

Foreign matter detection

(1)

Charging will be stopped if there is a coin or other metallic object between the wireless charging unit and the mobile phone.

[Foreign matter]

  

Foreign matter : All metallic objects such as coins, clips, and precious metals

The amber LED of the charging display lamp blinks 10 times for 10 seconds, and then it is turned off for 50 seconds (total 60 seconds).

The process is repeated for every 60 seconds.

  

Be careful as touching the foreign matter by hand may cause burns.

(2)

When system has detected foreign matter and stopped charging the mobile phone, the wireless charging fucntion will resume immediately after removing the foreign matter.

  

When the charging function is restarted, the amber LED of the charging display lamp will be turned on.

5.

IBU unit LF frequency interference prevention

This function prevents interference between the wireless charging frequency and smart key unit frequency band.

(1)

Wireless charging is stopped when the door is open or the IBU unit is in LF mode (searching for smart key).

e.g. Wireless charging function is stopped if the driver carries the smart key out of the vehicle during IG ON.

  

Charging will stop and the amber LED of the charging display lamp will turn off.

(2)

It will return to normal operating status when the LF mode of the IBU unit is completed.

6.

Turn the wireless charging function ON/OFF with USM.

※ Trunk applies to RV vehicle models.

Protection of Wireless Power Charger System

Item
Condition
Status
Protects against low/high voltage
Protects and stops charging under 8.5 V and over 16.5 V
LED OFF
(Stops operation)
Charges over 9.0 V and under 16.0 V
Protects against reverse voltage
Protects and stops charging in case of reverse voltage
LED OFF
(Stops operation)
Protects against overcurrent
Protects and stops charging in case of detecting 4.5 A
Amber LED blinks
Protects against overheating
Protects and stops charging in case of detecting 158°F (70°C) by internal temperature sensor of wireless charging module
Amber LED blinks
Resumes under 149°F (65°C)
Foreign matter
(Coins, clips, precious metals, etc.)
Protects and stops charging in case of detecting foreign matter (overheating prevention)
Amber LED blinks
Prevents frequency interference
Protects and stops charging by activating SMK in case door or trunk is open
LED OFF
(Stops operation)
Resumes in 3.5 seconds after all doors and trunk are closed and SMK operation is completed
Alert for contact with mobile phone
In case of smart phone on the charging pad when opening the door after ignition OFF
Displays warning message on the instrument panel (for about 4-5 seconds)

※ Trunk applies to RV vehicle models.

Schematic diagrams
Connector and Terminal function

Schematic Diagram

Repair procedures
Removal
  

Handling wireless charging system parts by wet hands may cause electric shock.

  

When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.

Use a plastic panel removal tool to remove interior trim pieces to protect from marring the surface.

Take care not to bend or scratch the trim and panels.

1.

Disconnect the negative (-) battery terminal.

2.

Remove the knob (B) by pulling them in the direction of the arrow after separating the boots (A) from the console upper cover.

3.

Remove the console upper cover (A).

4.

Disconnect the connector (A) from the console upper cover.

5.

Disconnect the connector (A) from the wireless power charger.

6.

Remove the wireless power charger (A) by pressing the fixing hooks.

Installation
1.

Install in the reverse order of removal.

Inspection
1.

The body electrical system can be more quickly diagnosed for troubles by using the vehicle diagnostic system (KDS).

KDS provides the following information.

(1)

Self diagnosis : Inspects and displays diagnostic trouble code (DTC)

(2)

Sensor data : Checks the system input/output value status

(3)

Forced operation : Checks the system operating status

(4)

Additional function : Controls system options, zero point adjustment and other functions

2.

To diagnose the vehicle by using the diagnostic equipment, select "vehicle model" and "wireless power charger system" to be inspected.

3.

To inquire the current status of input/output values, select the "Sensor Data" menu

The input/output values of the sensors corresponding to the selected module can be checked.

4.

To perform forced operation of the selected module input, select "Actuation Test".

5.

To inquire the cause of trouble for each module by self diagnosis, select 'Diagnostic Trouble Code'.

Charging System
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Wireless Charging Indicator
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