Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
  NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, select ECU view.
  NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.
  
  Does the scan tool display a red "X" next to the module?
  
  Yes
  - Go to step 2
  No
  - The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched and partially broken wires and the wiring harness connectors for broken, bent, pushed out and corroded terminals.
(A417) FUSED B(+) CIRCUIT OPEN OR SHORTED

Fig 1: Checking Fused B(+) 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.
1. Disconnect the Occupant Classification Module (OCM) C1 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.
2. Using a 12-volt test light connected to ground, check the (A417) Fused B(+) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 3
  No
  - Repair the (A417) Fused B(+) circuit for an open or short.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
(Z908) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to 12-volts, check the (Z908) ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 4
  No
  - Repair the (Z908) ground circuit for an open.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
(D55) AND (D54) CAN B BUS CIRCUITS OPEN

Fig 3: Checking CAN B BUS Circuits
Courtesy of CHRYSLER LLC

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 personal injury or death.

NOTE: One open circuit will not cause this condition.
1. Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.
2. Measure the voltage between the (D55) CAN B Bus (+) circuit and ground.
  Is there any voltage present on either circuit?
  
  Yes
  - Go to step 5
  No
  - Repair the (D55) and (D54) CAN B Bus circuits for an open. Inspect the connector for damage.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
CHECK (R263) DRIVER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Measure the resistance between ground and the (R263) Driver Seat Position Sensor Voltage-Driver circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Replace the OCM and Driver Seat Position Sensor Harness in accordance with the service information.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
  No
  - Go to step 6
CHECK (R701) SEAT WEIGHT SENOR 5 VOLT CIRCUIT FOR A SHORT TO GROUND
1. Disconnect the Occupant Classification Module (OCM) C2 harness connector.
2. Measure the resistance between ground and the (R701) Seat Weight Sensor 5 volt circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Replace the OCM and Driver Seat Position Sensor Harness in accordance with the service information.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
  No
  - Replace the Occupant Classification Module (OCM) in accordance with the service information.
  - Perform the OCS VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .