Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY ACTIVE DTC
NOTE:
Make sure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read the ORC DTCs.
  Does the scan tool display active: B012D-64-DRIVER DOOR PRESSURE SENSOR (SATELLITE) - SIGNAL PLAUSIBILITY FAILURE IS ACTIVE?
  
  Yes
  - Go To 2
  No
  - Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Refer to RESTRAINTS SYSTEM INTERMITTENT TEST .
CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS FOR A SHORT TO VOLTAGE

Fig 1: Checking Left Side Impact Pressure Sensor Signal And Ground Circuits For A Short To Voltage
Courtesy of CHRYSLER GROUP, 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 Left Side Impact Pressure Sensor harness connector.
2. Disconnect the ORC 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.
3. Measure the voltage of the (R130) Left Side Impact Pressure Sensor Signal circuit and (R150) Left Side Impact Pressure Sensor Ground circuit at the Left Side Impact Pressure Sensor harness connector and ground.
  Is there any voltage present?
  
  Yes
  - Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits for a short to voltage.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Left Side Impact Pressure Sensor Signal Circuit For Short To Ground
Courtesy of CHRYSLER GROUP, 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. Measure the resistance of the (R130) Left Side Impact Pressure Sensor Signal circuit between the Left Side Impact Pressure Sensor connector and ground.
  Is the resistance below 20 Ohms?
  
  Yes
  - Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for a short to ground.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER

Fig 3: Checking Left Side Impact Pressure Sensor Circuits For Short Together
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between the (R130) Left Side Impact Pressure Sensor Signal and (R150) Left Side Impact Pressure Sensor Ground circuits at the Left Side Impact Pressure Sensor connector.
  Is the resistance below 20 Ohms?
  
  Yes
  - Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits shorted together.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  No
  - Go To 5
CHECK THE (R150) LEFT SIDE IMPACT PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
NOTE:
After disconnecting the ORC module and the ORC module body harness connector, check the ORC module body harness connector shorting bar pin location. The shorting bar pin location should be down and not visible through the larger center holes of the ORC module body harness connector.

Fig 4: Occupant Restraint Controller (ORC) C1 & C2 Harness Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Connect the SRS Load Tool Adapter 8443-25 to the ORC Module harness connector.
2. Measure the resistance of the (R150) Left Side Impact Pressure Sensor Ground circuit between the Left Side Impact Pressure Sensor connector terminal 2 and terminal C2 31 of the SRS Load Tool Adapter 8443-25.
  Is the resistance below 1 Ohm?
  
  Yes
  - Go To 6
  No
  - Repair the (R150) Left Side Impact Pressure Sensor Ground circuit for an open or high resistance.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (R130) Left Side Impact Pressure Sensor Signal circuit between the Left Side Impact Pressure Sensor harness connector terminal 1 and the C2 32 terminal of the SRS Load Tool Adapter 8443-25.
  Is the resistance below 1 Ohm?
  
  Yes
  - Go To 7
  No
  - Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for an open or high resistance.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
CHECK OPERATION OF THE LEFT SIDE IMPACT PRESSURE SENSOR
1. Replace the Left Side Impact Pressure Sensor in accordance with the Service Information. Refer to SENSOR, IMPACT, REMOVAL .
2. Reconnect the vehicle body harness to the impact sensor.
3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.
  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. Connect the scan tool to the Data Link Connector - use the most current software available.
5. Use the scan tool and erase the stored codes in all airbag system modules.
6. Turn the Ignition Off, and wait five seconds before turning the Ignition On.
7. Wait one minute, and read active codes and if there are none present read the stored codes.
  Did the active: B012D-64-DRIVER DOOR PRESSURE SENSOR (SATELLITE) - SIGNAL PLAUSIBILITY FAILURE DTC return?
  
  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 Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.
  - Replace the Occupant Restraint Controller (ORC) in accordance with the Service Information. Refer to MODULE, OCCUPANT RESTRAINT CONTROLLER, REMOVAL .
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  No
  - Repair is complete.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .