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Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Air Bag Restraint System - Electrical Diagnostics >> DTC Troubleshooting >> B1B1B-Left Side Curtain Squib 1 Circuit Shorted Together >> Diagnostic Test

Diagnostic Test

  1. DETERMINE ACTIVE OR STORED DTC 
    NOTE: Make sure the battery is fully charged.
    NOTE: The scan tool, SRS Airbag Load Tool MRL 8443A, and DVOM are required to perform the following test.
    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 SHORTED SQUIB CIRCUITS IN LEFT SIDE CURTAIN AIRBAG 
    Fig 1: Checking For Shorted Squib Circuits In Left Side Curtain Airbag
    GC0119629Courtesy 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 Side Curtain Airbag connector.
      WARNING: Do not place an intact non-deployed curtain 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 connectors - Clean and repair as necessary.
    2. Connect the SRS Load Tool Kit 8443A and SRS Load Tool Jumper 8443-8 to the Left Side Curtain Airbag 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 DTCs.

      Does the scan tool display: B1B1B-LEFT SIDE CURTAIN SQUIB 1 CIRCUIT SHORTED TOGETHER?

      Yes 

      • Go to step  3

      No 

  3. CHECK (R3) LEFT CURTAIN SQUIB 1 LINE 1 CIRCUIT FOR A SHORT TO (R1) LEFT CURTAIN SQUIB 1 LINE 2 CIRCUIT 
    Fig 2: Checking Left Curtain Squib 1 Line 1 Circuit For A Short To Left Curtain Squib 1 Line 2 Circuit
    GC0116657Courtesy 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 SRS Load Tool Jumper 8443-8 from the Left Side Curtain Airbag connector.
    2. Disconnect the ORC connectors.
      NOTE: Check the connectors - Clean and repair as necessary.
    3. Connect the SRS Load Tool Kit 8443A and SRS Load Tool Adaptor 8443-24 to the ORC C1 connector.
    4. Measure the resistance between the (R3) Left Curtain Squib 1 Line 1 circuit and the (R1) Left Curtain Squib 1 Line 2 circuit at the SRS Load Tool Adaptor 8443-24.

      Is the resistance below 10K Ohms?

      Yes 

      No