LEMON Manuals: Even more car manuals for everyone
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 81: Side-Airbag Module (LH) (Squib) System Fault 1 (Short Circuit between Terminals of the Squib Circuit) >> Diagnosis

DTC 81: Side-Airbag Module (LH) (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-145. 

    Q: Is the connector correctly engaged? 

    YES  : Go to Step 3.

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

    Fig 1: Identifying Connector C-145
    G04537868Courtesy of DAIMLERCHRYSLER CORPORATION
  3. STEP 3. Check the SRS-ECU connector C-145 and the side-airbag module (LH) connector D-23. 
    1. Disconnect the negative battery terminal.
    2. Disconnect the connectors C-145 and D-23, and then reconnect them.
    3. Connect the negative battery terminal.
    4. Erase the DTC memory, and then recheck the DTC.

    Q: Is DTC 81 set? 

    YES  : Go to Step 4.

    NO:  The procedure is complete. It is assumed that DTC 81 set as the connector C-145 or D-23 was engaged improperly.

    Fig 2: Identifying Connector C-145
    G04537869Courtesy of DAIMLERCHRYSLER CORPORATION
    Fig 3: Identifying Connector D-23
    G04537870Courtesy of DAIMLERCHRYSLER CORPORATION
  4. STEP 4. Check the side-airbag module (LH). 
    1. Disconnect the negative battery terminal.
    2. Disconnect the side-airbag module (LH) connector D-23.
      Fig 4: Identifying Connector D-23
      G04537871Courtesy 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 D-23 harness side connector by backprobing.
    5. Connect the negative battery terminal.
    6. Erase DTC memory, and then recheck the DTC.
      Fig 5: Identifying Dummy Resistor
      G04537872Courtesy of DAIMLERCHRYSLER CORPORATION

    Q: Is DTC 81 set? 

    YES  : Go to Step 5.

    NO:  Replace the seatback assembly of the front seat (LH) (Refer to FRONT SEAT ASSEMBLY ). Then go to  Step 7.

  5. STEP 5. Check the side-airbag module (LH) circuit at the SRS-ECU connector C-145. 
    1. Disconnect the SRS-ECU connector C-145.
      Fig 6: Identifying Connector C-145
      G04537873Courtesy of DAIMLERCHRYSLER CORPORATION
      WARNING: To prevent the side-airbag from deploying unintentionally, disconnect the side-airbag module (LH) connector D-23 to short the squib circuit.
    2. Disconnect the side-airbag module (LH) connector D-23.
      Fig 7: Identifying Connector D-23
      G04537874Courtesy 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 21, 22 and the short spring to release the short spring.
      Fig 8: Inserting Cable Tie Into Short Spring
      G04537875Courtesy 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-145 harness side connector terminals 21 and 22.

      It should be open circuit.

    Q: Is the circuit normal? 

    YES  : Go to Step 6.

    NO:  Erase the DTC memory, and check if any DTC sets. If DTC 81 sets, replace the SRS-ECU (Refer to SRS CONTROL UNIT (SRS-ECU)  ). Then go to  Step 7.

    Fig 9: Checking Continuity Between C-145 Harness Side Connector Terminals 21 And 22
    G04537876Courtesy of DAIMLERCHRYSLER CORPORATION
  6. STEP 6. Check the harness wires for short circuit between the SRS-ECU connector C-145 (terminal No.21 and 22) and the side-airbag module (LH) connector D-23 (terminal No.1 and 2). 

    Q: Are the harness wires between the SRS-ECU connector C-145 (terminal No.21 and 22) and the side-airbag module (LH) connector D-23 (terminal No.1 and 2) in good condition? 

    YES  : Go to Step 7.

    NO:  Repair the harness wires between the SRS-ECU connector C-145 and the side-airbag module (LH) connector D-23. Then go to Step 7.

    Fig 10: Identifying Connector C-145
    G04537877Courtesy of DAIMLERCHRYSLER CORPORATION
    Fig 11: Identifying Connector D-23
    G04537878Courtesy of DAIMLERCHRYSLER CORPORATION
  7. STEP 7. Check for DTC. 

    Q: Is DTC 81 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 ).

scientia non olet · About LEMON Manuals