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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1573 (6.7L Diesel - DTCS P065A To P209F - 2500 Hd) >> DTC Troubleshooting >> P1477-Intake Air Diverter Valve Position Sensor Circuit Shorted To Ground >> 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. ACTIVE DTC 
    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. Start the engine and let idle for one minute.
    6. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (N33) INTAKE AIR DIVERTER FEEDBACK CIRCUIT FOR A SHORT TO GROUND 
    1. Disconnect the PCM C2 harness connector.
    2. Disconnect the IAD Valve harness connector.
    3. Measure the resistance between ground and the (N33) IAD Feedback circuit at the IAD Valve harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (N33) IAD Feedback circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (N33) INTAKE AIR DIVERTER FEEDBACK CIRCUIT FOR A SHORT TO THE (Z915) VALVE GROUND 
    1. Measure the resistance between the (N33) IAD Feedback circuit and the (Z915) Valve Ground at the IAD Valve harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (N33) IAD Feedback circuit and the (Z915) Valve Ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK THE INTAKE AIR DIVERTER VALVE FOR OUT OF CALIBRATION 
    1. Remove the Air Cleaner top and Air Filter.
    2. Reconnect the IAD Valve harness connector.
    3. Reconnect the PCM C2 harness connector.
      NOTE:

      Visually inspect the Air Cleaner Box for debris or any other damage that could inhibit the movement of the Diverter Valve.

    4. Turn the ignition on, engine off.
    5. Using the scan tool, go to Misc. Functions and perform the 'Ram Active Air Box Test'.

      Did the Diverter Valve pass the test?

      Yes 

      • Using the scan tool, perform the 'Ram Active Air Box Calibration' routine.
      • Test complete.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5
  5. INTAKE AIR DIVERTER VALVE 
    1. Turn the ignition off.
    2. Replace the Intake Air Diverter Valve in accordance with the Service Information. 
      NOTE:

      The Intake Air Diverter Valve cannot be serviced separately. It is part of the Air Box.

    3. Turn the ignition on.
    4. With the scan tool, erase DTCs.
    5. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Replace Powertrain Control Module in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

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