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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 178 ((Occupant Restraint Controller (Orc) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0176-00-Lost Communication W/ Right Side Satellite Sensor 2 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY ACTIVE DTC 
    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.

    NOTE:

    Using the wiring diagram/schematic as a guide check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

    NOTE:

    If after the harness inspection it appears the impact sensor connector is only seated halfway. Re-seat the harness connector into the impact sensor and lock the tab. Follow the instructions below checking for active codes.

    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.

    NOTE:

    Make sure the battery is fully charged.

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

      Does the scan tool display active B1B75-RIGHT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL, U0175-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 1, U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2- DTC?

      Yes 

      • Check for all other internal and lost communication codes indicated in the right side impact sensor daisy chain wiring before diagnosing DTC U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2. Go To The DTC Displayed. Refer to DIAGNOSIS AND TESTING . If internal fault 1 and lost comm fault 1 have been checked follow DTC U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2. Go To  2.

      No 

  2. CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 2 CIRCUITS FOR A SHORT TO VOLTAGE 
    Fig 1: Checking Right Side Impact Sensor 2 Circuit For A Short To Voltage
    GC0089853Courtesy 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 Sensor 1 harness connector.
    2. Disconnect the Right Side Impact Sensor 2 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 (R18) Right Side Impact Sensor 1 Signal circuit cavity 4 and (R20) Right Side Impact Sensor 1 Ground circuit cavity 3 at the Right Side Impact Sensor 1 harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (R18, R20) Right Side Impact Sensor 1 circuits for a short to voltage.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.

      No 

      • Go To  3.
  3. CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 1 CIRCUITS FOR A SHORT TO GROUND 
    Fig 2: Checking Right Side Impact Sensor 1 Circuit For A Short To Ground
    GC0089854Courtesy of CHRYSLER GROUP, LLC
    WARNING:

    Turn the ignition on, then reconnect the battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Measure the resistance between ground and the (R18) Right Side Impact Sensor 2 Signal circuit at the Right Side Impact Sensor 2 harness connector cavity 4.
    2. Measure the resistance between ground and the (R20) Right Side Impact Sensor 2 Ground circuit at the Right Side Impact Sensor 2 harness connector cavity 3.

      Is the resistance below 100K Ohms?

      Yes 

      • Repair the (R18, R20) Right Side Impact Sensor 2 circuits for a short to ground.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.

      No 

      • Go To  4.
  4. CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 2 CIRCUITS FOR A SHORT TOGETHER 
    Fig 3: Checking Right Side Impact Sensor 2 Circuit
    GC0089855Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (R18) Right Side Impact Sensor 2 Signal circuit and (R20) Right Side Impact Sensor 2 Ground circuit at the Right Side Impact Sensor 2 harness connector.

      Is the resistance below 100K Ohms?

      Yes 

      • Repair the (R18, R20) Right Side Impact Sensor 2 circuits shorted together.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.

      No 

      • Go To  5.
  5. CHECK THE (R20) RIGHT SIDE IMPACT SENSOR 2 GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 4: Checking Right Side Impact Sensor 2 Ground Circuit For Open
    GC0089856Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Right Side Impact Sensor 1 harness connector.
    2. Measure the resistance of the (R20) Right Side Impact Sensor 2 Ground circuit between the Right Side Impact Sensor 2 harness connector cavity 3 and the Right Side Impact Sensor 1 harness connector cavity 2.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  6.

      No 

      • Repair the (R20) Right Side Impact Sensor 2 Ground circuit for an open or high resistance.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
  6. CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 5: Checking Right Side Impact Sensor 2 Signal Circuit For Open
    GC0089857Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (R18) Right Side Impact Sensor 2 Signal circuit between the Right Side Impact Sensor 1 harness connector cavity 4 and the Right Side Impact Sensor 1 harness connector cavity 1.

      Is the resistance below 1 Ohm?

      Yes 

      • Go To  7.

      No 

      • Repair the (R18) Right Side Impact Sensor 2 Signal circuit for an open or high resistance.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
  7. CHECK OPERATION OF THE RIGHT SIDE IMPACT SENSOR 2 
    1. Replace the Right Side Impact Sensor 2.
    2. Reconnect the vehicle body harness connector to the Right Side Impact Sensor 2.
    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 15 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 scan tool display active U0176-00-LOST COMMUNICATION W/ RIGHT SIDE SATELLITE SENSOR 2 - 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 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.

      • Replace the ORC in accordance with Service Instructions.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.

      No 

      • Repair is complete.
      • Refer to STANDARD PROCEDURE  and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
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