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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1637 (Occupant Restraint Controller (Orc) - DTCS B0099-96 To U1415-00 - 2500 Hd) >> DTC Troubleshooting >> B2768-49-Right Impact Pressure Sensor - Internal Electronic Failure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. DETERMINE ACTIVE OR STORED DTC 
    NOTE:

    The use of a approved special tool or Digital Multimeter such as a Fluke Meter that will not apply more than 20 milliamperes to a circuit are the only measurement tools to be used.

    NOTE:

    Probing of the circuit cavities at the ORC Module C1-A, C1-B, or C2-A body harness connectors is only to be done with a approved test lead from the Test Leads, Dedicated Test Leads kit 10159, test lead 10159-6. Or a comparable test lead to prevent vehicle wiring harness connector damage during diagnostic procedures. (special tool #10159, Test Leads, Dedicated)

    1. Turn the ignition on.
    2. With the scan tool, read ORC DTCs.
      NOTE:

      Make sure the battery is fully charged.

      Does the scan tool display an active: B2768-49 RIGHT SIDE RESTRAINTS SENSOR 4 - INTERNAL ELECTRONIC FAILURE?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (R140), (R160) RIGHT SIDE IMPACT PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS FOR A SHORT TO VOLTAGE 
    GC0151815Courtesy 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 Right Side Impact Pressure Sensor harness connector.
    2. Disconnect the ORC harness connector.
    3. If the vehicle is equipped with the standard key ignition, follow this ignition on warning.
      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. If the vehicle is equipped with the keyless ignition, follow this ignition on warning.
      WARNING:

      Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    5. Measure the voltage of the (R140) Right Side Impact Pressure Sensor Signal circuit and (R160) Sensor Ground circuit at the appropriate terminal of the Right Side Impact Pressure Sensor harness connector and ground.

      Is there any voltage present?

      Yes 

      • Repair the (R140), (R160) Right Side Impact Pressure Sensor circuits for a short to voltage.
      • Perform the Occupant Restraint Controller VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (R140) RIGHT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    GC0151816Courtesy 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 (R140) Right Side Impact Pressure Sensor Signal circuit between the appropriate terminal of the Right Side Impact Pressure Sensor harness connector and ground.

      Is the resistance below 20 Ohms?

      Yes 

      • Repair the (R140) Right Side Impact Pressure Sensor Signal circuit for a short to ground.
      • Perform the Occupant Restraint Controller VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK THE (R140), (R160) RIGHT SIDE IMPACT PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER 
    GC0151817Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (R140) Right Side Impact Pressure Sensor 4 Signal circuit and the (R160) Sensor Ground circuits at the Right Side Impact Pressure Sensor 4 harness connector.

      Is the resistance below 20 Ohms?

      Yes 

      • Repair the (R140), (R160) Right Side Impact Pressure Sensor circuits shorted together.
      • Perform the Occupant Restraint Controller VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE (R160) RIGHT SIDE IMPACT PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Disconnect the ORC module from the ORC module body harness connector.
    2. Connect the appropriate test leads to the DVOM.
    3. Measure the resistance of the (R160) Right Side Impact Pressure Sensor Ground circuit between terminal 2 of the Right Side Impact Pressure Sensor harness connector and C2-36 terminal of the ORC module body harness connector.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  6

      No 

      • Repair the (R160) Right Side Impact Pressure Sensor Ground circuit for an open or high resistance.
      • Perform the Occupant Restraint Controller VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  6. CHECK THE (R140) RIGHT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Measure the resistance of the (R140) Right Side Impact Pressure Sensor Signal circuit between terminal 1 of the Right Side Impact Pressure Sensor harness connector and the C2-35 terminal of the ORC module body harness connector.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  7

      No 

      • Repair the (R140) Right Side Impact Pressure Sensor Signal circuit for an open or high resistance.
      • Perform the RESTRAINTS VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  7. CHECK OPERATION OF THE RIGHT SIDE IMPACT PRESSURE SENSOR 4 
    1. Replace the Right Side Impact Pressure Sensor 4. 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.
    4. If the vehicle is equipped with the standard key ignition, follow this ignition on warning.
      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.

    5. If the vehicle is equipped with the keyless ignition, follow this ignition on warning.
      WARNING:

      Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    6. Connect the scan tool to the Data Link Connector - use the most current software available.
    7. Use the scan tool and erase the stored codes in all airbag system modules.
    8. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
    9. Wait one minute, and read active codes and if there are none present read the stored codes.

      Did the active Right Side Impact Sensor 4 DTC return?

      Yes 

      • Go To  8

      No 

  8. CHECK RELATED HARNESS CONNECTIONS 
    WARNING:

    Turn the ignition off, disconnect the 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 could result in accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Disconnect all Occupant Restraint Controller (ORC) harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    5. Connect all Occupant Restraint Controller (ORC) harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    10. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No 

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