LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2009 >> SX4 LE, Standard >> Repair and Diagnosis >> Quick Lookups >> Technical Bulletins >> Technical Service Bulletins >> Other Variant >> Restraints Control Systems >> Counter-Measure Procedure For DTC B1318 (TS 01 11029)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Counter-Measure Procedure For DTC B1318 (TS 01 11029)

WARNING: This page is about the SX4 Crossover, 4WD, Automatic, which is a different variant/trim than selected.
Publication date: 2009-11-02
Reference number: TS 01 11029

COUNTER-MEASURE PROCEDURE FOR DTC B1318

COUNTER-MEASURE PROCEDURE FOR DTC B1318

TECHNICAL SERVICE BULLETIN

Reference Number(s): TS 01 11029, Date of Issue:  November 02, 2009
SUZUKI: 2009 SX-4 (RW420)
SECTION: Restraints

VIN BREAKS

CONDITION

The Airbag warning light illuminates, and DTC B1318 is stored. This typically can result from a change in load on the passenger seat, such as a passenger shifting their weight on and off the seat, or an object (bag, briefcase, pet, etc.) bouncing on the seat while the vehicle is traveling.

CAUSE

Programming error in the occupant classification module (OCM).

CORRECTION

Reflash the program of the occupant classification module (OCM).

PART(S) INFORMATION

PARTS INFORMATION

Part Number Description Qty. Notes
N/A N/A N/A Do Not  replace the Seat Cushion or OCM

WARRANTY INFORMATION

WARRANTY INFORMATION

Labor Operation Description Failed Part Number Complaint Code Defect Code Labor Time
QD9999 Cushion Assy, FR RH 85101-80JA0-REP 36 48 .6

Technical Service Department

Dealership Circulation - Initial and file:

DEALERSHIP CIRCULATION CHART

Service Manager Parts Manager Service Advisor Technicians
       

SPECIAL SERVICE TOOL INFORMATION

SPECIAL SERVICE TOOL INFORMATION

Part Number Description Qty. Notes
99963-80JKT OCM Reflash Kit 1 Kit does not include SDT or Laptop

NECESSARY TOOLS

NOTE: Tools 1 through 6 are included in the OCM Reflash Kit, the Suzuki SDT (7) and the PC/Laptop (8) are available at the dealership.
Fig 1: OCM Reflash Kit, Suzuki SDT And PC/Laptop
G06234963
PART INFORMATION

Part Name Qty Remark
1 RS232C Interface cable 1  
2 Reprogramming CD-ROM 1  
3 RS232C-USB converter 1  
4 Converter Driver software CD-ROM 1  
5 Power supply 100-240V AC 1 Includes four different type of power plugs
6 K-Line interface cable 1  
7 Suzuki SDT scan tool 1 Software version 3.5 or newer
8 PC or Laptop 1 Refer to "MINIMUM SYSTEM REQUIREMENT "

Minimum system requirement

To setup the Reprogramming Software, the PC must meet with the following minimum system requirement.

SOFTWARE INSTALLATION

Install the Reprogramming Software, and the USB TO RS232 Adapter drivers (if needed), according to the instructions included in the OCM Reflash Kit. These steps should only need to be performed once during the initial setup of the reprogramming tools and the PC.

Repair instructions for B1318 countermeasure

Work Flow 

Fig 2: Work Flow Chart
G06234964

Reprogramming Procedures

  1. Turn ignition switch to OFF position.
  2. Connect the SUZUKI SDT (A) to the data link connector (DLC)(1), located on underside of instrument panel to the left of the steering column.
    Fig 3: DLC Location
    G06234965
  3. Turn ignition switch to ON position.
  4. Read DTC according to instructions displayed on SUZUKI SDT.
    NOTE: Be sure to check for both current and history DTC's
  5. If the DTC B1318 is detected as either a current or history code, proceed to the next step. If any DTC(s) are stored and not B1318, stop here and refer to the Service Manual for diagnosis of that DTC(s).
  6. After completing the check, turn ignition switch to OFF position and disconnect SUZUKI SDT from DLC.
  7. Connect the OCS - Interface Box to the PC using the RS232C serial interface cable (and the USB TO RS232 adapter, if needed).
    Fig 4: Connecting OCS
    G06234966
  8. Connect Power supply 100-240V AC to power connector (for U.S. application) referring to the figure.
    • Note the direction of the connector based on the pin size.
    • Push the connector down and push it to the "left" end lock.
    Fig 5: Power Connector
    G06234967
  9. Connect the Power Supply to the OCS - Interface Box, and plug into a 120V AC power source.
    Fig 6: Power Supply
    G06234968
  10. Make sure the ignition switch is turned off. If the ignition is turned on, or left on, while the reprogramming procedure is performed, DTC(s) indicating circuit problems may be stored in the SDM.
  11. Find the OCS connector, located under the Passenger Seat Cushion, and disconnect it.
    NOTE: You should not need to remove the strap securing the harness.
    Fig 7: OCS Connector
    G06234969
  12. Connect OCS male connector of the vehicle and OCS female connector of K-Line interface cable.
    Fig 8: OCS Male Connector And OCS Female Connector
    G06234970
    NOTE: Close any software programs running on the PC before reprogramming begins.

    13. REPROGRAMMING 

  13. Make sure the ignition switch is turned off.
  14. Check connection between Power supply 100-240V AC, RS232C interface cable, K-Line interface cable, OCS connector and PC.
  15. Double click "PCDIag OCS Reprogramming id15" on PC desktop to open the program.
    Fig 9: PCDIag OCS Reprogramming id15
    G06234971
  16. At the start of the program two windows will open, type your dealer code into the "OCS Reprogramming" box and click "OK".
    NOTE: The DOS window is due to a program call running in the background, and can be ignored.
    Fig 10: OCS Reprogramming Box
    G06234972
  17. The main window opens to show the following information, click the "Start" button to begin reprogramming.
    Fig 11: PCDiag NT Menu
    G06234973
  18. Once the reprogramming starts the red and green boxes below the Suzuki logo will begin flashing to indicate active communication, if the boxes do not flash, refer to the "COM Port Troubleshooting instructions", following step 24. An additional window will also appear, containing a progress bar to show the process for each step and the completion of the cycle.
    Fig 12: Pcd OCS Reprogramming
    G06234974
  19. When the process is finished, the progress window closes and one of the following result windows will open (RESULT WINDOWS REFERENCE CHART )
  20. Disconnect the reprogramming tools from the vehicle starting with the female OCS connector under the seat cushion.
  21. Reconnect the OCS female connector to the vehicle harness connector under the seat cushion.
    Fig 13: OCS Female Connector
    G06234979
  22. Using a green marking pen (included in the OCM Reflash Kit), and put a green dot on the OCS female connector in an area to make it easily visible. This will indicate that the OCM reprogramming has been performed.
  23. Connect the Suzuki SDT scan tool to the vehicle, check and clear any DTC(s). After clearing DTC(s), confirm there are no codes stored as current or history.
  24. If no codes are present, power off the Suzuki SDT, turn the ignition switch off, and disconnect the Suzuki SDT from the DLC. The process is complete.
    RESULT WINDOWS REFERENCE CHART

    Result Window Work Procedure
    G06234975
    		 If the "PASS" window has opened, reprogramming was successful. Click the "OK" button and continue to the next step in the instructions.
    G06234976
    		 If the "OK: No reprogramming required" window has opened, there was no need to reprogram, likely due to the vehicle being previously reprogrammed, or it not falling within the affected VIN range. Continue to the next step in the instructions.
    G06234977
    		 If the "FAIL" window shown to the left has opened, check reprogramming tools, connections, and PC setting by referring to the check list below. Click the "Repeat" button, and retry the reprogramming.
    NOTE: Reprogramming can be retried twice.
    G06234978
    		 If the "FAIL" window shown to the left has opened, OCS reprogramming is impossible. Click the "Close" button and then replace the OCS/Seat Cushion Assembly referring to the Service Manual.
    Check list 
    • Main power supply is available and properly connected to K-Line interface cable.
    • RS232C Interface cable is properly connected to K-Line cable (screws tightened).
    • RS232C Interface cable is properly connected to PC or USB Converter (screws turned in).
    • If necessary RS232C - USB Converter is properly connected.
    • If necessary USB driver is properly installed.
    • OCS connector is properly connected.
    • Correct COM port is used.
    • No other software is running (specially that uses any port).

COM Port Troubleshooting instructions

  1. To check the installation and confirm the Com Port configuration, right click "My Computer", then click "Properties"
    Fig 14: Checking Com Port Configuration
    G06234980
  2. From the "Hardware" tab, click on the "Device Manager" button
    Fig 15: Device Manager Button
    G06234981
  3. The following chart should open on your computer screen, confirm that both of the items indicated in the red rectangle areas are present on your computer, and note the COM Port assigned to the "USB Serial Port", (example: USB Serial Port (COM3), COM3) to be selected during the Reprogramming procedure
    Fig 16: USB Serial Port
    G06234982
  4. Once you have found the COM Port that the USB Serial Converter was assigned, you can change the setting by clicking the "Com Port Configuration Button" shown below.
    Fig 17: Com Port Configuration Button
    G06234983
  5. To change the com port, click on the "Com Port Configuration Button". Another small window will open and COM Port can be modified (COM1, COM2, etc.).
    Fig 18: COM Port Setting
    G06234984
  6. After correctly changing the COM Port setting, go back to step 17 of the Reprogramming instructions.
scientia non olet · About LEMON Manuals