Diagnostic Test

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

VERIFY ACTIVE DTC
NOTE: Make sure that the battery is fully charged.
1. Turn the ignition off, wait ten seconds and turn ignition on.
2. With the scan tool, read the OCM DTC.
  Did the scan tool display active or stored B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL DTC?
  
  Yes
  - Go to step 2
  No
  - Perform the OCS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
RE-ZERO OCM SEAT WEIGHT SENSORS

Fig 1: OCS Seat Weights MRL #9077
Courtesy of CHRYSLER LLC
1. Verify that the passenger seat is empty.
  NOTE: Failure to follow the test instructions or aborting the test causes faults to set when performing the Occupant Classification Module System Verification Test. To prevent faults due to process errors: verify that all tests steps that led you here were performed as directed, verify that the ignition is in run. Wait 30 seconds after changing the seat weight before proceeding to allow the system to stabilize. Only press scan tool buttons when directed to do so and perform the Occupant Classification Module System Verification Test to completion.
2. With the scan tool in OCM, select More Options, System Tests and select Occupant Classification Module System Verification Test. Run the test by following the instructions displayed on the scan tool. When the test completes, wait two minutes and then proceed as follows.
3. With the scan tool, read the OCM DTC.
  Does the scan tool display any active B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL DTC?
  
  Yes
  - Go to step 3
  Yes - Other DTCs Present
  - Diagnose and repair the DTC. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing for a complete list of DTCs.
  No
  - Perform the OCS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
VERIFY PASSENGER SEAT RISER, TRACKS AND STRUCTURE

Fig 2: OCS Seat Weights MRL #9077
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. Verify that the passenger seat is empty.
  CAUTION: To avoid seat weight sensor damage, the Strain Gage Alignment Tool 9698A must be used to when loosening or tightening the sensor retainers.
2. Verify that all of the Seat Weight Sensor mounting screws are tightened to specification. Refer to Restraints - Specifications .
  WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.
  
  NOTE: Failure to follow the test instructions or aborting the test causes faults to set when performing the Occupant Classification Module System Verification Test. To prevent faults due to process errors: verify that all tests steps that led you here were performed as directed, verify that the ignition is in run. Wait 30 seconds after changing the seat weight before proceeding to allow the system to stabilize. Only press scan tool buttons when directed to do so and perform the Occupant Classification Module System Verification Test to completion.
3. With the scan tool in OCM, select More Options, System Tests and select Occupant Classification Module System Verification Test. Run the test by following the instructions displayed on the scan tool. When the test completes, wait two minutes and then proceed as follows.
4. With the scan tool, read the OCM DTC.
  Does the scan tool display any active B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL DTC?
  
  Yes
  
  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.
  
  WARNING: If the Occupant Classification Module (OCM) is dropped at any time, it must be replaced. Failure to take the proper precautions could result in accidental airbag deployment and may result in possible serious or fatal injury.
  - Replace the Occupant Classification Module (OCM) in accordance with the service information.
  - Perform the RE-ZERO OCM SEAT WEIGHT SENSORS. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
  No - Other DTCs Present.
  - Perform the appropriate diagnostic procedure. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .
  No Active DTCs Present.
  - Perform the OCS VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .