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Home >> Chrysler >> 2001 >> Sebring LX, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Air Bag Restraint Systems - Coupe) >> SRS Air Bag Diagnosis >> Diagnostic Trouble Code Procedures >> DTC 24: Passenger's (Front) Air Bag Module (Squib) System Fault 1 (Short Circuit between Terminals of the Squib Circuit) >> Diagnosis

DTC 24: Passenger's (Front) Air Bag Module (Squib) System Fault 1 (Short Circuit between Terminals of the Squib Circuit): Diagnosis

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools: 

  1. STEP 1. Check the DTC. 

    Q: Is DTC 34 set? 

    YES  : Go to Step 2.

    NO:  Go to  Step 3.

  2. STEP 2. Check the SRS-ECU connector C-137. 

    Q: Is the connector correctly engaged? 

    YES  : Go to Step 3.

    NO:  Engage the connector correctly. Then go to  Step 7.

    Fig 1: Identifying SRS-ECU Connector C-137
    G04537727Courtesy of DAIMLERCHRYSLER CORPORATION
  3. STEP 3. Check the SRS-ECU connector C-137 and the passenger's air bag module connector C-12. 
    1. Disconnect the negative battery terminal.
    2. Disconnect the connectors C-12 and C-137, and then reconnect them.
    3. Connect the negative battery terminal.
    4. Erase the DTC memory, and then recheck the DTC.

    Q: Is DTC 24 set? 

    YES  : Go to Step 4.

    NO:  The procedure is complete. It is assumed that DTC 24 set as the connector C-12 or C-137 was engaged improperly.

    Fig 2: Identifying Connector C-12
    G04537728Courtesy of DAIMLERCHRYSLER CORPORATION
    Fig 3: Identifying Connector C-137
    G04537729Courtesy of DAIMLERCHRYSLER CORPORATION
  4. STEP 4. Check the passenger's air bag module. 
    1. Disconnect the negative battery terminal.
    2. Disconnect the passenger's air bag module connector C-12.
      Fig 4: Identifying Passenger's Air Bag Module Connector C-32
      G04537730Courtesy of DAIMLERCHRYSLER CORPORATION
    3. Connect special tool MB991865 to special tool MB991866.
      CAUTION: Do not insert a test probe into the terminal from its front side directly as the connector contact pressure may be weakened.
    4. Insert special tool MB991866 into the harness side connector by backprobing.
    5. Connect the negative battery terminal.
    6. Erase the DTC memory, and then recheck the DTC.

    Q: Is DTC 24 set? 

    YES  : Go to Step 5.

    NO:  Replace the passenger's air bag module (Refer to AIR BAG MODULES AND CLOCK SPRING  ). Then go to  Step 7.

    Fig 5: Identifying Special Tools
    G04537731Courtesy of DAIMLERCHRYSLER CORPORATION
  5. STEP 5. Check the passenger's air bag module circuit at the SRS-ECU connector C-137. 
    1. Disconnect the SRS-ECU connector C-137.
      Fig 6: Identifying SRS-ECU Connector C-137
      G04537732Courtesy of DAIMLERCHRYSLER CORPORATION
      WARNING: To prevent the air bag from deploying unintentionally, disconnect the passenger's air bag module connector C-12 to short the squib circuit.
    2. Disconnect the passenger's air bag module connector C-12.
      Fig 7: Identifying Passenger Air Bag Module Connector C-12
      G04537733Courtesy of DAIMLERCHRYSLER CORPORATION
      CAUTION: Insert an insulator such as a cable tie to a depth of 4mm (0.16 inch) or more, otherwise the short spring will not be released.
    3. Insert a cable tie [3 mm (0.12 inch) wide, 0.5 mm (0.02 inch) thick] between the terminals 9, 10 and the short spring to release the short spring.
      Fig 8: Inserting Cable Tie Between Passenger Air Bag Module Connector Terminals
      G04537734Courtesy of DAIMLERCHRYSLER CORPORATION
      CAUTION: Do not insert a test probe into the terminal from its front side directly as the connector contact pressure may be weakened.
    4. Check for continuity between the C-137 harness side connector terminals 5 and 6.

      It should be open circuit.

    Q: Does continuity exist? 

    YES  : Go to Step 6.

    NO:  Erase the DTC memory, and recheck if any DTC sets. If DTC 24 sets, replace the SRS-ECU (Refer to SRS CONTROL UNIT (SRS-ECU)  ). Then go to  Step 7.

    Fig 9: Checking Continuity Between C-137 Harness Side Connector Terminals
    G04537735Courtesy of DAIMLERCHRYSLER CORPORATION
  6. STEP 6. Check the harness wires for short circuit between the SRS-ECU connector C-137 (terminal No.5 and 6) and the passenger's air bag module connector C-12 (terminal No.1 and 2). 

    Q: Are the harness wires between the SRS-ECU connector C-137 (terminal No.5 and 6) and passenger's air bag module connector C-12 (terminal No.1 and 2) in good condition? 

    YES  : Go to Step 7.

    NO:  Repair the harness wires between the SRS-ECU connector C-137 and the passenger's air bag module connector C-12. Then go to Step 7.

    Fig 10: Identifying SRS-ECU Connector C-137
    G04537736Courtesy of DAIMLERCHRYSLER CORPORATION
    Fig 11: Identifying Passenger Air Bag Module Connector C-12
    G04537737Courtesy of DAIMLERCHRYSLER CORPORATION
  7. STEP 7. Check the DTC. 

    Q: Is DTC 24 set? 

    YES  : Return to  Step 1.

    NO:  The procedure is complete (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to TO COPE WITH INTERMITTENT MALFUNCTION ).

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