LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 326 (Air Bag Restraint System - Electrical Diagnostics) >> DTC Troubleshooting >> U0176-Lost Communication W/Right Side Satellite Acceleration Sensor 2 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY ACTIVE DTC U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2 
    1. Turn the ignition on.
    2. With the scan tool, read ORC DTCs.
      NOTE: Ensure the battery is fully charged.

      Does the scan tool display an active: U0176-LOST COMMUNICATION W/RIGHT SIDE SATELLITE ACCELERATION SENSOR 2?

      Yes 

      • Go to step  2

      No 

  2. CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 2 SIGNAL AND GROUND CIRCUITS FOR A SHORT TO BATTERY 
    Fig 1: Checking Right Side Impact Sensor 2 Circuits For A Short To Battery
    GC0137578Courtesy 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 Right Side Impact Sensor 2 connector.
    2. Disconnect the ORC C1 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 2 Signal circuit and (R20) Sensor Ground circuit at the Right Side Impact Sensor 2 connector and ground.

      Is there any voltage present?

      Yes 

      No 

      • Go to step  3
  3. CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Right Side Impact Sensor 2 Signal Circuit For A Short To Ground
    GC0137579Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (R18) Right Side Impact Sensor 2 Signal circuit between the Right Side Impact Sensor 2 connector and ground.

      Is the resistance below 100K Ohms?

      Yes 

      No 

      • Go to step  4
  4. CHECK THE (R18, R20) RIGHT SIDE IMPACT SENSOR 2 CIRCUITS FOR A SHORT TOGETHER 
    Fig 3: Checking Right Side Impact Sensor 2 Circuits
    GC0137580Courtesy of CHRYSLER LLC
    1. Measure the resistance between the (R18) Right Side Impact Sensor 2 Signal and (R20) Sensor Ground circuits at the Right Side Impact Sensor 2 connector.

      Is the resistance below 100K Ohms?

      Yes 

      No 

      • Go to step  5
  5. CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 4: Checking Right Side Impact Sensor 2 Ground Circuit For An Open Or High Resistance
    GC0137581Courtesy of CHRYSLER LLC
    1. Connect the SRS Load Tool Kit 8443A to the Occupant Restraint Controller C1 connector.
    2. Measure the resistance of the (R20) Right Side Impact Sensor 2 Ground circuit between the Right Side Impact Sensor 2 connector and the SRS Load Tool Kit 8443A.

      Is the resistance below 1 ohm?

      Yes 

      • Go to step  6

      No 

  6. CHECK THE (R18) RIGHT SIDE IMPACT SENSOR 2 CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 5: Checking Right Side Impact Sensor 2 Circuit For An Open Or High Resistance
    GC0137582Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (R18) Right Side Impact Sensor 2 Signal circuit between the Right Side Impact Sensor 2 connector and the SRS Load Tool Kit 8443A.

      Is the resistance below 1 ohm?

      Yes 

      • Go to step  7

      No 

  7. CHECK OPERATION OF THE RIGHT SIDE IMPACT SENSOR 2 
    1. Replace the Right Side Impact Sensor 2.
    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 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 active Right Side Impact Sensor 2 DTC return?

      Yes 

      • Go to step  8

      No 

  8. REPLACE THE OCCUPANT RESTRAINT CONTROLLER 
    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.

    View Repair

    Repair