Diagnostic Test
- CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT CLASSIFICATION MODULE (OCM) NOTE: Ensure the battery is fully charged.
- Turn the ignition on, then off, and then on again.
- With the scan tool, read Occupant Classification Module (OCM) DTCs.
Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults?
Yes
- Diagnose and repair the DTCs. Refer to the following for a complete list of symptoms. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .
No
- Go to step 2
- VERIFY THAT DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH IS ACTIVE
- INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS 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.
- Using the wiring diagram/schematic as a guide, inspect the Passenger Seat Harness wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
Are any of these conditions present?
Yes
- Replace the Passenger Seat Harness in accordance with the Service Information.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.No
- Go to step 4
- Using the wiring diagram/schematic as a guide, inspect the Passenger Seat Harness wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
- VERIFY THAT PASSENGER SEAT HARNESS IS ROUTED CORRECTLY
- Verify that the Passenger Seat Harness is routed correctly.
Is the Passenger Seat Harness routed correctly?
Yes
- Go to step 5
No
- Reroute the Passenger Seat Harness as necessary.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
- Verify that the Passenger Seat Harness is routed correctly.
- CHECK FOR DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH WITH PASSENGER SEAT TRACK POSITION SENSOR DISCONNECTED 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.
- Disconnect the Passenger Seat Track Position Sensor 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.
- Wait two minutes, and then with the scan tool, read OCM DTCs.
Does the scan tool display: B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH?
Yes
- Go to step 6
No
- Replace the Passenger Seat Track Position Sensor in accordance with the service information.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
- Disconnect the Passenger Seat Track Position Sensor connector.
- CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT AND (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT FOR A SHORT TO VOLTAGE Fig 1: Checking Seat Position Sensor Data-Passenger Circuit & Seat Position Sensor Voltage-Passenger Circuit For A Short To Voltage
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.- Disconnect the OCM 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.
- Measure the voltage of the (R262) Seat Position Sensor Data-Passenger circuit.
- Measure the voltage of the (R264) Seat Position Sensor Voltage-Passenger circuit.
Is the voltage above 0.2 volts on either circuit?
Yes
- Replace the Passenger Seat Harness in accordance with the Service Information.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.No
- Go to step 7
- Disconnect the OCM connectors.
- CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT FOR A SHORT TO (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT Fig 2: Checking Seat Position Sensor Data-Passenger Circuit For A Short To Seat Position Sensor Voltage-Passenger Circuit
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.- Measure the resistance between the (R262) Seat Position Sensor Data-Passenger circuit and the (R264) Seat Position Sensor Voltage-Passenger circuit.
Is the resistance below 10K Ohms?
Yes
- Replace the Passenger Seat Harness in accordance with the service information.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if the condition inspecting or testing for is present in the Seat Harness.No
- Replace the OCM in accordance with the Service information.
- Perform the OCM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.
- Measure the resistance between the (R262) Seat Position Sensor Data-Passenger circuit and the (R264) Seat Position Sensor Voltage-Passenger circuit.
- TEST FOR AN INTERMITTENT CONDITION
- With the scan tool, record and erase all DTCs from the OCM.
- If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.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.
- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
- The following additional checks may assist you in identifying a possible intermittent problem.
- Reconnect any disconnected components and harness 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.
- With the scan tool monitor active codes as you work through the following steps.WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
- Wiggle the wiring harness and connectors of the related airbag circuit or component.
- If only stored codes return continue the test until the problem area has been isolated.
- In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Are any ACTIVE DTCs present?
Yes
- Select the appropriate diagnostic procedure from DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .
No
- No problem found at this time. Erase all codes before returning vehicle to customer.