Occupant Classification System - Replacement & Service Reset Procedure (12-BE-007)

Publication date: 2012-04-01
Reference number: 12-BE-007

OCCUPANT CLASSIFICATION SYSTEM - REPLACEMENT & SERVICE RESET PROCEDURE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 12-BE-007, Date of Issue: April, 2012

HYUNDAI:	2007-2012: ELANTRA & VERACRUZ 2009-2012: SONATA & ELANTRA TOURING 2011-2012: SONATA HEV 2007-2008: ENTOURAGE
GROUP:	ELECTRICAL

DESCRIPTION:

This bulletin describes the procedure for Occupant Classification System module replacement and service reset.

IMPORTANT: If the Occupant Classification System's Electric Control Unit or Strain Gauge Sensor replacement is required, the entire seat track assembly must be replaced.

After replacement, the Occupant Classification System's Electronic Control Unit (referred to as WCS [Weight Classification System] ECU on the GDS display screen) needs to be reset using the GDS tool. This reset procedure should be performed after replacing the front passenger seat cover, seat cushion pad, seat cushion assembly or seat track assembly.

NOTE: Refer to the Owner's Manual Section "Occupant Classification System" or the Service Shop Manual, under the Restraints Section, for details regarding the WCS ECU and diagnosis.

Applicable Vehicles:

2007-2012: ELANTRA & VERACRUZ

2009-2012: SONATA & ELANTRA TOURING

2011-2012: SONATA HEV

2007-2008: ENTOURAGE

WARRANTY INFORMATION:

Normal warranty applies

SERVICE PROCEDURE:

WCS ECU RESET PROCEDURE:

Verify the front passenger seat and the back pocket are empty.
Confirm the right front seat belt is not buckled.

Adjust the seat position according to the table below:

SEAT POSITION ADJUSTMENT

ITEM	REMARK
Seat track position	Rearmost position
Seat recliner angle	Normal upright position
Head rest position	Lowest position
Seat height position	Lowest position

Connect the GDS VCI module to the vehicle's DLC connector and open the GDS program.
Turn on vehicle ignition and make sure the green power LED is illuminated on the VCI; if it is not illuminated press on the power button of the VCI. Within a few seconds, the GDS screen should indicate "VCI: USB On" in bright blue to the left of the VIN button on the screen.
Press the VIN button at the top of the screen to launch the GDS VIN search screen.
Press the "VIN Auto Detect" button to automatically read the vehicle's VIN (or manually enter vehicle, year, and engine if it does not automatically read this information), then select the "AIRBAG" system.
Select "Weight Classification".
Press the "OK" button at the bottom of the screen.
Press "DTC Analysis". If there are diagnostic code(s) stored in the main SRS Control Module, the code(s) must be repaired first before starting the WCS ECU reset procedure.
Press the "Vehicle S/W Management" tab on the GDS screen.
Press the "WCS Reset" to start the rest process.
Press the "OK" button when it appears a few seconds after pressing the "WCS REST".
Make sure that the front passenger seat is empty.
Press the "OK" in the popup screen to begin the WCS rest procedure.
The WCS ECU reset process takes a few seconds to complete.
Once the reset is completed, press the "OK" to exit the WCS RESET menu.
Confirm proper system operation: Turn the ignition switch ON, the SRS indicator should be turned on for about 6 seconds and then go off.

Refer to the Service Shop Manual, under the Restraints Section, for details regarding the WCS ECU and diagnosis.