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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Restraints >> Seat Belts >> Air Bag Restraint System - Electrical Diagnostics >> DTC Troubleshooting >> B1B02-Driver Airbag Squib 1 Circuit Open >> Diagnostic Test

Diagnostic Test

  1. DETERMINE ACTIVE OR STORED DTC 
    NOTE: Ensure the battery is fully charged.
    1. Select Active or Stored DTC.

      Is the DTC active or stored?

      ORC - ACTIVE DTC 

      • Go to step  2

      ORC - STORED DTC 

  2. CHECK FOR OPEN SQUIB CIRCUITS IN DRIVER AIRBAG 
    Fig 1: Checking For Shorted Squib Circuits In Driver Airbag
    GC0096160Courtesy 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 Driver Airbag Squib connectors.
      WARNING: Do not place an intact undeployed 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 8443 and the SRS Load Tool Jumper 8443-1 to the Driver Airbag Squib connectors.
      WARNING: Turn the ignition on, then reconnect the 12-volt battery. 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 DTCs.

      Does the scan tool display: B1B02 DRIVER AIRBAG SQUIB 1 CIRCUIT OPEN?

      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 Driver 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 CLOCKSPRING SQUIB CIRCUITS FOR AN OPEN 
    Fig 2: Checking Clockspring Squib Circuits For A Short To Ground
    GC0096161Courtesy 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 8443 and the SRS Load Tool Jumper 8443-13 from the Driver Airbag Squib connectors.
    2. Remove the Steering Control Module from the steering column in accordance with the Service Information.
    3. Disconnect the Steering Control Module connector.
      NOTE: Check the connectors - Clean and repair as necessary.
      WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

      4. With the Steering Control Module Connector attached to the steering column, connect the SRS Load Tool Kit 8443 and the SRS Load Tool Jumper 8443-13 to the Steering Control Module C1 connector.

    4. With the scan tool, read the active ORC DTCs.

      Does the scan tool display: B1B02 DRIVER AIRBAG SQUIB 1 CIRCUIT OPEN?

      Yes 

      • Go to step  4

      No 

  4. CHECK (R43) DRIVER SQUIB 1 LINE 2 CIRCUIT AND (R45) DRIVER SQUIB 1 LINE 1 FOR AN OPEN 
    Fig 3: Checking Driver Squib 1 Line 2 Circuit & Driver Squib 1 Line 1 For An Open
    GC0096163Courtesy 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 8443 and the SRS Load Tool Jumper 8443-13 from the Steering Control Module C1 connector.
    2. Disconnect the ORC connectors.
      NOTE: Check the connectors - Clean and repair as necessary.
    3. Connect the SRS Load Tool Adapter 8443-24 to the ORC C2 connector.
    4. Measure the resistance of the (R43) Driver Squib 1 Line 2 circuit and the (R45) Driver Squib 1 Line 1 circuit between the Steering Control Module C1 connector and the SRS Load Tool Adapter 8443-24.

      Is the resistance below 1.0 ohm on both circuits?

      Yes 

      No 

        WARNING: Turn the ignition off, disconnect the battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
      • Repair the (R43) Driver Squib 1 Line 2 circuit and (R45) Driver Squib 1 Line 1 circuit for an open.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
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