B1B28-1st ROW DRIVER SEAT BELT PRETENSIONER CIRCUIT LOW





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on.

  • Set Condition:

    The Occupant Restraint Controller (ORC) monitors the resistance of the Driver Seat Belt Tensioner circuits. The ORC will set this DTC if it detects low resistance on the Driver Seat Belt Tensioner circuits.


Possible Causes
  
(R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT OR (R53) DRIVER SEAT BELT TENSIONER LINE 2 CIRCUIT SHORTED TO GROUND
  
DRIVER SEAT BELT PRETENSIONER
  
ORC
  



Diagnostic Test

1.DETERMINE ACTIVE OR STORED DTC

NOTE: Ensure that the battery is fully charged.

NOTE: The scan tool, SRS Airbag Load Tool MRL 8443, and DVOM are required to perform the following test.




Select ACTIVE or STORED DTC:

ACTIVE DTC
  • Go To 2


STORED DTC
  • Go To 4

2.CHECK FOR SHORTED DRIVER SEAT BELT PRETENSIONER


WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.



NOTE: Check connectors - Clean and repair as necessary.



WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.




Does the scan tool display: B1B28-1st ROW DRIVER SEAT BELT PRETENSIONER CIRCUIT LOW?

Yes
  • Go To 3


No
  • Replace the Driver Seat Belt Pretensioner in accordance with the Service Information.
  • Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.

3.CHECK (R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT AND (R53) DRIVER SEAT BELT TENSIONER LINE 2 CIRCUIT FOR A SHORT TO GROUND


WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.




NOTE: Check connectors - Clean and repair as necessary.






Is the resistance below 10k ohms on either circuit?

Yes
  • Repair the Driver Seat Belt Tensioner circuits with resistance below 10k ohms for a short to ground.
  • Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.


No

  • WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

  • WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.

  • Replace the ORC in accordance with Service Information.
  • Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.

4.CHECKING STORED OR INTERMITTENT CODES

NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to the Table of Contents in this Section for a complete list of airbag system diagnostic procedures.



WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.




WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.


  • Wiggle the wiring harness and connectors of the related airbag circuit.
  • Continue the test until either a code becomes active or the problem area is isolated.



Are any ACTIVE DTCs present?

Yes
  • Select the appropriate diagnostic procedure from the Table of Contents in this section.


No
  • No problem found at this time. Erase all codes before returning the vehicle to the customer.