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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Restraints >> Seat Belts >> DTCS U0121 To U141C, Airbag System Verification Test & Seat Weight Sensor Diagnosis >> Diagnosis And Testing >> U0171-Lost Communication W/Up-Front Right Satellite Acceleration Sensor >> Diagnostic Test

Diagnostic Test

  1. 1)  VERIFY THAT DTC U0171-LOST COMMUNICATION W/UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR IS ACTIVE 
    NOTE: Ensure the battery is fully charged.
    NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

    Turn the ignition on.

    With the scan tool, read ORC DTCs.

    Does the scan tool display active: U0171-LOST COMMUNICATION W/UP-FRONT RIGHT SATELLITE ACCELERATION SENSOR? 

    Yes 

    1. Go To  2).

    No 

    1. Go To  9).
  2. 2)  CHECK THE (R80, R82) FRONT RIGHT IMPACT SENSOR SIGNAL AND GROUND CIRCUITS FOR A SHORT TO BATTERY 
    Fig 1: Checking Right Front Impact Sensor Signal And Ground Circuits For Short To Voltage
    GC0016548Courtesy of DAIMLERCHRYSLER CORP.
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Disconnect the Front Right Impact Sensor connector.

    Disconnect the ORC connector.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    Measure the voltage of the (R80) Front Right Impact Sensor Signal circuit and (R82) Sensor Ground circuit at the Front Right Impact Sensor connector and ground.

    Is there any voltage present? 

    Yes 

    1. Repair the (R80, R82) Front Right Impact Sensor circuits for a short to battery.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go To  3).
  3. 3)  CHECK THE (R80) FRONT RIGHT IMPACT SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Right Front Impact Sensor Signal Circuit For Short To Ground
    GC0016549Courtesy of DAIMLERCHRYSLER CORP.
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Measure the resistance of the (R80) Front Right Impact Sensor Signal circuit between the Front Right Impact Sensor connector and ground.

    Is the resistance below 100K ohms? 

    Yes 

    1. Repair the (R80) Front Right Impact Sensor Signal circuit for a short to ground.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go To  4).
  4. 4)  CHECK THE (R80, R82) FRONT RIGHT IMPACT SENSOR CIRCUITS FOR A SHORT TOGETHER 
    Fig 3: Checking Right Front Impact Sensor Signal And Ground Circuits For Short Together
    GC0016550Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance between the (R80) Front Right Impact Sensor Signal and (R82) Sensor Ground circuits at the Front Right Impact Sensor connector.

    Is the resistance below 100K ohms? 

    Yes 

    1. Repair the (R80, R82) Front Right Impact Sensor circuits shorted together.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .

    No 

    1. Go To  5).
  5. 5)  CHECK THE (R82) FRONT RIGHT IMPACT SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 4: Checking Right Front Impact Sensor Ground Circuit For Open Or High Resistance
    GC0016551Courtesy of DAIMLERCHRYSLER CORP.

    Connect the 8443 Load Tool ORC Adaptor to the Occupant Control Module connector.

    Measure the resistance of the (R82) Front Right Impact Sensor Ground circuit between the Front Right Impact Sensor connector and the 8443 Load Tool ORC Adaptor.

    Is the resistance below 1 ohm? 

    Yes 

    1. Go To  6).

    No 

    1. Repair the (R82) Front Right Impact Sensor 2 Ground circuit for an open or high resistance.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .
  6. 6)  CHECK THE (R80) FRONT RIGHT IMPACT SENSOR CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    Fig 5: Checking Right Front Impact Sensor Signal Circuit For Open Or High Resistance
    GC0016552Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance of the (R80) Front Right Impact Sensor Signal circuit between the Front Right Impact Sensor connector and the 8443 Load Tool ORC Adaptor.

    Is the resistance below 1 ohm? 

    Yes 

    1. Go To  7).

    No 

    1. Repair the (R80) Front Right Impact Sensor Signal circuit for an open or high resistance.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .
  7. 7)  CHECK OPERATION OF THE FRONT RIGHT IMPACT SENSOR 

    Replace the Front Right Impact Sensor.

    Reconnect the vehicle body harness to the impact sensor.

    Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    Connect the scan tool to the Data Link Connector - use the most current software available.

    Use the scan tool and erase the stored codes in all airbag system modules.

    Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.

    Wait one minute, and read active codes and if there are none present read the stored codes.

    Did the active Front Right Impact Sensor DTC return? 

    Yes 

    1. Go To  8).

    No 

    1. Repair is complete.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .
  8. 8)  REPLACE THE OCCUPANT RESTRAINT CONTROLLER 
    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
    WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.

    View repair 

    Repair 

    1. Replace the Occupant Restraint Controller in accordance with Service Instructions.
    2. Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1 .
  9. 9)  TEST FOR AN INTERMITTENT CONDITION 

    With the scan tool, record and erase all DTCs from all Airbag modules.

    If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

    WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

    Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

    The following additional checks may assist you in identifying a possible intermittent problem.

    Reconnect any disconnected components and harness connector.

    WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

    With the scan tool monitor active codes as you work through the following steps.

    WARNING: To avoid personal injury or death, maintain a safe distance from all airbags while performing the following steps.

    Wiggle the wiring harness and connectors of the related airbag circuit or component.

    If only stored codes return continue the test until the problem area has been isolated.

    In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.

    Are any ACTIVE DTCs present? 

    Yes 

    1. Select the appropriate symptom from Symptom List.

    No 

    1. No problem found at this time. Erase all codes before returning vehicle to customer.
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