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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 326 (Air Bag Restraint System - Electrical Diagnostics) >> DTC Troubleshooting >> B1C2A-Left Side Seat Thorax Squib 1 Shorted Together >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. DETERMINE ACTIVE OR STORED DTC 
    NOTE: Make sure that the battery is fully charged.
    NOTE: The scan tool, SRS Load Tool Kit 8443A, and DVOM are required to perform the following test.
    1. Turn the ignition on.

      Select ACTIVE or STORED DTC:

      ACTIVE DTC 

      • Go to step  2

      STORED DTC 

      • Go to step  5
  2. CHECK FOR SHORTED SQUIB CIRCUITS IN THE LEFT SEAT AIRBAG 
    Fig 1: Checking For Shorted Squib Circuits At Left Seat Squib Airbag
    GC0096244Courtesy of CHRYSLER LLC
    WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    1. Disconnect the Left Seat Airbag harness connector.
      WARNING: Do not place an intact non-deployed Seat Squib Airbag face down on a hard surface, the airbag will propel into the air if accidentally deployed. Failure to follow these instructions may result in possible serious or fatal injury.
      NOTE: Check the connectors - Clean and repair as necessary.
    2. Connect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-1 to the Left Seat Airbag harness connector.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    3. With the scan tool, read the active ORC DTC.

      Does the scan tool display: B1C2A-LEFT SIDE SEAT THORAX SQUIB 1 SHORTED TOGETHER?

      Yes 

      • Go to step  3

      No 

        WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
      • Replace the Left Seat Airbag in accordance with the Service Information.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
  3. CHECK FOR LEFT SEAT AIRBAG SQUIB CIRCUITS SHORTED TOGETHER IN THE SEAT BACK 
    Fig 2: Checking For Shorted Left Seat Airbag Squib Circuits In Seat Back
    GC0096245Courtesy of CHRYSLER LLC
    WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    1. Disconnect the Left Seat Airbag C322 harness connector (under Left Seat).
      NOTE: Check the connectors - Clean and repair as necessary.
    2. Connect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-20 to the Left Seat Airbag C322 harness connector.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    3. With the scan tool, read the active ORC DTC.

      Does the scan tool display: B1C2A-LEFT SIDE SEAT THORAX SQUIB 1 SHORTED TOGETHER?

      Yes 

      • Go to step  4

      No 

        WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
      • In accordance with the Service Information repair or replace the Left Seat Airbag wiring harness (Side Airbag Jumper). Circuits (R5) and (R7) shorted together between the C322 harness connector and the Left Seat Airbag connector.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
  4. CHECK (R5) LEFT SEAT SQUIB 1 LINE 2 CIRCUIT FOR A SHORT TO (R7) LEFT SEAT SQUIB 1 LINE 1 CIRCUIT 
    Fig 3: Checking Left Seat Squib 1 Line Circuits
    GC0096250Courtesy of CHRYSLER LLC
    WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    1. Disconnect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-20 from the Left Seat Airbag harness connector.
    2. Disconnect the ORC harness connectors.
      NOTE: Check connectors - Clean and repair as necessary.
    3. Connect the SRS Load Tool Adapter 8443-24 to the ORC harness connectors.
    4. Measure the resistance between the (R5) Left Seat Squib 1 Line 2 circuit cavity 1 and the (R7) Left Seat Squib 1 Line 1 circuit cavity 2 at the C322 harness connector.

      Is the resistance below 10K Ohms?

      Yes 

      No 

        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 serious or fatal injury.
      • Replace the ORC in accordance with Service Information.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
  5. CHECKING STORED OR INTERMITTENT CODES 
    NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to DIAGNOSTIC CODE INDEX  .
    1. With the scan tool, record and erase all Airbag System Module DTCs.
      WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    2. Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
    3. Reconnect all disconnected components and harness connectors.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
    4. With the scan tool, monitor for active codes while performing the following:
      WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
      • 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.
    5. In the previous steps you have attempted to recreate the conditions responsible for setting the DTC in question/causing the intermittent condition.

      Are any ACTIVE DTCs present?

      Yes 

      No 

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