Hyundai Elantra: Smart Key System / Smart Key Diagnostic Repair procedures
Self Diagnosis with Scan Tool
It will be able to diagnose defects of SMART KEY system with
GDS quickly. GDS 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.
1. |
SMART KEY unit Input problem : switch diagnosis |
2. |
SMART KEY unit problem : communication diagnosis |
3. |
SMART KEY unit Output problem : antenna and switch output diagnosis |
Switch Diagnosis
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel, turn the power on GDS. |
2. |
Select the vehicle model and then SMART KEY system. |
3. |
Select the "SMART KEY Unit". |
4. |
After IG ON, select the "Current Data". 
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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.
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Communication Diagnosis with GDS (Self Diagnosis)
1. |
Communication diagnosis checks that the each linked components operates normal. |
2. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
3. |
After IG ON, select the "DTC". 
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Antenna Actuation Diagnosis
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
2. |
After IG ON, select the "Actation Test". 
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3. |
Set the smart key near the related antenna and operate it with a GDS. |
4. |
If the LED of smart key is blinking, the smart key is normal. |
5. |
If the LED of smart key is not blinking, check the voltage of smart key battery. |
Antenna Status Check
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
2. |
Select the "Antenna Status Check". 
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3. |
After IG ON, select the "Antenna Status Check". 
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4. |
Set the smart key near the related antenna and operate it with a GDS. 
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5. |
If the smart key runs normal , the related antenna, smart key(transmission, reception) and exterior receiver are normal. |
FOB Status Check
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
2. |
After IG ON, select the "FOB KEY STATUS INFO". 
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Smart Key Status Check
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
2. |
After IG ON, select the "SMK STATUS INFO". 
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Neutralization Status Check
1. |
Connect the cable of GDS to the data link connector in driver side crash pad lower panel. |
2. |
After IG ON, select the "Neutralization mode". 
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Removal
Smart Key Unit
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box.
(Refer to Body - "Glove Box Upper Cover Assembly")
3.
Remove the smart key unit (A) after ...