Hyundai Santa Fe: Smart Key System / Smart Key Diagnostic. Repair procedures

Hyundai Santa Fe (TM) 2019-2024 Service Manual / Body Electrical System / Smart Key System / Smart Key Diagnostic. Repair procedures

Inspection
Self Diagnosis With Scan Tool
It will be able to diagnose defects of SMART KEY system with diagnostic tool quickly. diagnostic tool can operates actuator forcefully, input/output value monitoring and self diagnosis.
The following three features will be major problem in SMART KEY system.
1.
Problem in SMART KEY unit input.
2.
Problem in SMART KEY unit.
3.
Problem in SMART KEY unit output.
So the following three diagnosis operates will be the major problem solution process.
4.
SMART KEY unit Input problem : switch diagnosis
5.
SMART KEY unit problem : communication diagnosis
6.
SMART KEY unit Output problem : antenna and switch output diagnosis
Switch Diagnosis
1.
In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (diagnostic tool).
The diagnostic system(diagnostic tool) provides the following information.
(1)
Fault Code Searching : Checking failure and code number (DTC)
(2)
Data Analysis : Checking the system input/output data state
(3)
Actuation test : Checking the system operation condition
(4)
S/W Management : Controlling other features including system option setting and zero point adjustment
2.
If diagnose the vehicle by diagnostic tool, select "DTC Analysis" and "Vehicle".
3.
If check current status, select the "Data Analysis" and "Car model".
4.
Select the SMK' to be checked in order to check the vehicle with the tester.
5.
You can see the situation of each switch on scanner after connecting the "current data" process.
Display
Description
FL Toggle SW
 ON : Push button is ON in the driver door handle.
FR Toggle SW
 ON : Push button is ON in the assist door handle.
Tailgate open SW
 ON : Tailgate button is ON.
Gear P Position
 ON : Shift lever is P position.
IGN 1
 ON : IGN switch is IG position.
ACC
 ON : IGN switch is ACC position.
Brake SW
 ON : Brake switch is ON.

Fault Code Searching
1.
Fault code searching that the each linked components operates normal.
2.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
3.
Select the 'Fault Code Searching' and 'Car model'.
Antenna Actuation Diagnosis
1.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
2.
Select the 'Actuation Test' and 'Car model'.
3.
Set the smart key near the related antenna and operate it with a diagnostic tool.
4.
Set the smart key near the related antenna and operate it with a diagnostic tool.
5.
If the LED of smart key is blinking, the smart key is normal.
6.
If the LED of smart key is not blinking, check the voltage of smart key battery.
7.
Antenna actuation
–
Interior Antenna 1
–
Interior Antenna 2
–
Bumper Antenna
–
Driver Door Antenna
–
Assist Door Antenna
Antenna Status Check
1.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
2.
Select the 'S/W Management' and 'Car model'.
3.
Select the 'Smart Key Unit' and 'Antenna Status Check'.
4.
Set the smart key near the related antenna and operate it with a diagnostic tool.
5.
If the smart key runs normal , the related antenna, smart key(transmission, reception) and exterior receiver are normal.
6.
Antenna status
–
Interior Antenna 1
–
Interior Antenna 2
–
Bumper Antenna
–
Driver Door Antenna
–
Assist Door Antenna
FOB Status Check
1.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
2.
Select the 'S/W Management' and 'Car model'.
3.
Select the 'Smart Key Unit' and 'FOB KEY STATUS IMFORMATION'.
Smart Key Status Check
1.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
2.
Select the 'S/W Management' and 'Car model'.
3.
Select the 'Smart Key Unit' and 'SMK STATUS INFORMATION'.
Neutralization Status Check
1.
Connect the cable of diagnostic tool to the data link connector in driver side crash pad lower panel.
2.
Select the 'S/W Management' and 'Car model'.
3.
Select the 'Smart Key Unit' and 'Neutralization Mode'.

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