Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.

NOTE: The scan tool, SRS Airbag Load Tool MRL 8443, 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 1
CHECK FOR SHORTED DRIVER KNEE BOLSTER AIRBAG CIRCUITS

Fig 1: Checking For Shorted Driver Knee Bolster Airbag Circuits
Courtesy 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 Knee Bolster Airbag connector.
  WARNING: Do not place an intact undeployed airbag face down on a hard surface, the airbag propels 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 8443 Load Tool to the Driver Knee Bolster Airbag connector.
  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: B1B10-DRIVER KNEE BOLSTER SQUIB CIRCUIT LOW?
  
  Yes
  - Go to step 3
  No
  - Replace the Driver Knee Bolster Airbag in accordance with the Service Information.
  - Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure
CHECK (R11) DRIVER KNEE BLOCKER SQUIB LINE 1 CIRCUIT OR (R9) DRIVER KNEE BLOCKER SQUIB LINE 2 CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Driver Knee Blocker Squib Line 1 Circuit Or Driver Knee Blocker Squib Line 2 Circuit For A Short To Ground
Courtesy 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 8443 Load Tool from the Driver Knee Bolster Airbag connector.
2. Disconnect the ORC connectors.
  NOTE: Check connectors - Clean and repair as necessary.
3. Connect the 8443 Load Tool ORC Adaptor to the ORC C2 connector.
4. Measure the resistance of the (R11) Driver Knee Blocker Squib Line 1 circuit between ground and the adaptor.
5. Measure the resistance of the (R9) Driver Knee Blocker Squib Line 2 circuit between ground and the adaptor.
  Is the resistance below 10k ohms on either circuit?
  
  Yes
  - Repair the (R11) Driver Knee Blocker Squib Line 1 or (R9) Driver Knee Blocker Squib Line 2 circuits for a short to ground.
  - Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure
  No
  - Replace the ORC in accordance with Service Information.
  - Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. See DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure

CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to the DIAGNOSTIC CODE INDEX for a complete list of airbag system diagnostic procedures.
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 SYSTEM WIRING DIAGRAMS 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:
  - 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
  - Select the appropriate diagnostic procedure from the DIAGNOSTIC CODE INDEX .
  No
  - No problem found at this time. Erase all codes before returning the vehicle to the customer.