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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 435 (6.7L Diesel - DTCS P1209 To P2281 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P2229-Barometric Pressure Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, record all Freeze frame data.
    3. With the scan tool, erase DTCs.
    4. Turn the ignition off for 75 seconds.
    5. Turn the ignition on.
    6. With the scan tool, read DTCs.

      Did the DTC reset?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (K616) INLET AIR PRESSURE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Inlet Air Temperature/Pressure Sensor Connector Pin ID
    GC0111034Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Inlet Air Temperature/Pressure Sensor harness connector.
      NOTE:

      Check connectors - Clean/repair as necessary.

    3. Turn the ignition on.
    4. Measure the voltage on the (K616) Inlet Air Pressure Signal circuit at the Inlet Temperature/Pressure Sensor harness connector.

      Is the voltage above 5.1 Volts?

      Yes 

      • Repair the (K616) Inlet Air Pressure Signal circuit for a short to voltage.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK FOR THE (K616) INLET AIR PRESSURE SIGNAL CIRCUIT SHORTED TO THE (F857) 5-VOLT SUPPLY 
    Fig 2: Inlet Air Temperature/Pressure Sensor Connector Pin ID
    GC0111035Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Measure the resistance between the (K616) Inlet Air Pressure Signal circuit and the (F857) 5-Volt Supply circuit at the Inlet Air Temperature/Pressure Sensor harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (K616) Inlet Air Pressure Signal circuit and the (F857) 5-Volt Supply circuit.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK THE (K916) SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE 
    2. Measure the resistance of the (K916) Sensor Ground circuit from the Inlet Temperature/Pressure Sensor harness connector to the PCM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (K916) Sensor Ground circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  5. CHECK THE INLET TEMPERATURE/PRESSURE SENSOR 
    1. Reconnect the PCM C1 harness connector.
    2. Reconnect the Inlet Temperature/Pressure Sensor harness connector.
    3. With the scan tool, erase DTCs.
    4. Turn the ignition off for 75 seconds.
    5. Turn the ignition on.
    6. While monitoring the scan tool, disconnect the Inlet Temperature/Pressure Sensor harness connector.

      Does DTC P2228 Barometric Pressure Sensor Low become active.

      Yes 

      • Replace the Inlet Temperature/Pressure Sensor in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .

      No 

      • Replace and program the Powertrain Control Module in accordance with the service information.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
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