Engine Control Unit (Ecu) Replacement And Testing Procedure (11-BE-013)

Publication date: 2011-11-01
Reference number: 11-BE-013

ENGINE CONTROL UNIT (ECU) REPLACEMENT AND TESTING PROCEDURE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 11-BE-013, Date of Issue: November, 2011

HYUNDAI:	All
GROUP:	ELECTRICAL

DESCRIPTION

This bulletin describes the following procedure for vehicles equipped with Blue Link:

How to swap ECU for diagnosis only.
How to replace ECU.
How to clear Diagnostic code(s) from the Blue Link system.

Applicable Vehicles:

All vehicles equipped with Blue Link

* IMPORTANT

Before performing any repair or diagnostic procedures involving the Engine Control Unit (ECU) on a Blue Link Telematics-equipped vehicle, the following procedure MUST be followed to avoid compromising a retail customer's Blue Link account and to prevent unnecessary replacement of the Telematic ECU (TMU).
This procedure must be performed on BOTH the repair vehicle and the Engine ECU donor vehicle (if swapping the Engine ECU is part of the diagnostic process).
This procedure must be performed regardless of the status of the Blue Link account.
This procedure is applicable to both pre-RDR dealer stock and retail customer vehicles.

WARRANTY INFORMATION

OP CODE	OPERATION	OP TIME
Normal Warranty Applies

SWAPPING ECU MODULE FROM A KNOWN GOOD VEHICLE (FOR TESTING PURPOSE ONLY!)

1.1 Remove the Negative (-) terminal from the battery, on the repair and Engine ECU donor (vehicle with known good ECU vehicles).
NOTE: Do not forget to write down the customer's radio presets.
1.2 Locate the fuse powering the Blue Link Telematics Unit (TMU) in the interior fuse box, on both the repair and Engine ECU donor vehicles.
NOTE: See the chart below to find the correct Blue Link TMU fuse for the model and year of vehicle.
1.3 Remove fuse from both vehicles and set aside.
CAUTION: This step is very critical. Do not forget to remove the fuse!
1.4 The known good working ECU can now be swapped into the repair vehicle for DIAGNOSIS ONLY.
CAUTION: It is very important that when swapping the ECU, it is strictly for DIAGNOSIS ONLY . Any ECU replacement must be made with a new part.
1.5 Once diagnosis has been completed, return the donor Engine ECU to the donor vehicle and re-insert the Blue Link TMU fuse on the donor vehicle only.
CAUTION: Only reinsert the Blue Link TMU fuse if the ECU is returned to the vehicle it originally came from.

After diagnosis, if the ECU is faulty, then proceed to the section of replacing the ECU with a new part. If the ECU is NOT faulty, then re-install the ECU into the repaired vehicle and re-insert the Blue Link TMU fuse.
1.6 Install the negative (-) terminal to the battery and reprogram all the customer's presets.

Lastly, confirm all functions are working properly and there is no MIL (Malfunction Indicator Lamp) illuminated on the instrument cluster. Check radio volume, AM/FM, navigation, Blue Link, etc.

NOTE: If there is a condition message from Blue Link, follow the instruction below to clear all code(s) from the system.

REPLACING ECU WITH A NEW REPLACEMENT PART

2.1 On the repair vehicle, remove the Negative (-) terminal from the battery.
NOTE: Do not forget to write down the customer's radio presets.
2.2 Locate the Blue Link TMU fuse in the interior fuse box.
NOTE: See the chart below to find the correct Blue Link TMU fuse for the model and year of vehicle.
2.3 Remove fuse and set aside.
CAUTION: This step is very critical. Do not forget to remove the fuse!
2.4 Remove the OLD ECU and install the NEW Engine ECU.
NOTE: Refer to the shop manual for ECU location and removal procedure.
2.5 Install the negative (-) terminal to the battery.
2.6 Using a GDS Scan tool, write the correct VIN to the ECU.

CAUTION: It is very critical to enter the correct VIN. If the wrong VIN is entered, it can destroy the Blue Link TMU after inserting the fuse and powering up the system.
2.7 After Engine ECU repairs are completed, re-insert the Blue Link TMU fuse and reprogram all the customer's presets.

Lastly, confirm all functions are working properly and there is no MIL (Malfunction Indicator Lamp) illuminated on the instrument cluster. Check radio volume, AM/FM, navigation, Blue Link, etc.

NOTE: If there is a condition message from Blue Link, follow the instruction below to clear all code(s) from the system.

BLUE LINK TMU FUSE CHART
Year	Model	Fuse Description
2012	YF (Sonata)	7.5A 'MODULE 3'
2012	FS (Veloster)	15A 'MULTIMEDIA'

CLEARING DIAGNOSTIC CODE(S) FROM BLUE LINK SYSTEM

NOTE: After replacing/swapping the ECU, it is possible a diagnostic code(s) will be triggered. Therefore, it is necessary to also clear the diagnostic code(s) from the Blue Link system.

VEHICLE NOT YET ENROLLED/REGISTERED IN BLUE LINK

3.1 Make sure vehicle is in an open location where the cellular signal is not affected.
3.2 Start the vehicle's engine. Allow the engine to idle for 10 seconds, and then proceed to the next step.
3.3 Press the Blue Link button on the rear view mirror.
3.4 Wait for the system to prompt "Please say the name of the service", and then say "Vehicle Report". System will confirm by stating "Vehicle Report Submitted".
3.5 After confirmation, the system will prompt "Please say the name of the service", and then say "Goodbye". Blue Link system will then disconnect and end the call.
3.6 LEAVE ENGINE RUNNING FOR A MINIMUM OF 2 MINUTES , and then turn the engine off.

VEHICLE ALREADY ENROLLED/REGISTERED IN BLUE LINK

4.1 Make sure vehicle is in an open location where the cellular signal is not affected.
4.2 Start the vehicle's engine. Allow the engine to idle for 10 seconds, and then proceed to the next step.
4.3 Press the Blue Link button on the rear view mirror.
4.4 Wait for the system to prompt "Please say the name of the service", and then say "Vehicle Assist".
4.5 System will confirm by stating "Vehicle Assist, you can say roadside assistance, agent assistance, service link, quick tip, or main menu".
4.6 Then say "Blue Link Service Complete". This is a hidden command, so the Blue Link interactive voice will not list it as an available option.
4.7 System will confirm by stating "Service complete please say Main Menu or Goodbye", then say "Goodbye" . Blue Link system will then disconnect and end the call.
4.8 LEAVE ENGINE RUNNING FOR A MINIMUM OF 2 MINUTES , and then turn the engine off.