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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 426 (5.7L - DTCS P058C To P1495 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P05A5-Active Grille Shutter 1 Control Circuit Low >> 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:

    Make sure the Battery is in good condition. Using the Midtronics Battery Tester, test the Battery before continuing.

    NOTE:

    Inspect the vehicle for after market accessories that may exceed the Generator System output. Verify proper charging system operation.

    NOTE:

    If there are any system voltage or Generator DTCs present, diagnose and repair those DTCs before continuing with this test procedure.

    1. Start the engine.
    2. Allow the engine to reach normal operating temperature.
    3. With a scan tool, read DTCs.

      Is the DTC Active or Pending at this time?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (D511) LIN BUS CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the Active Grille Shutter harness connector.
    3. Disconnect the PCM C1 harness connector.
      CAUTION:

      Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

    4. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    5. Measure the resistance of the (D511) LIN BUS circuit between the Active Grille Shutter harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  3

      No 

      • Repair the (D511) LIN BUS circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (D511) LIN BUS CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the (D511) LIN BUS circuit at the Active Grille Shutter harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (D511) LIN BUS circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE GENERATOR FIELD CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Disconnect the PCM C2 harness connector.
      CAUTION:

      Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

    2. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    3. Measure the resistance of the Generator Field Control circuit between the Generator harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the Generator Field Control circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. GENERATOR FIELD CONTROL CIRCUIT SHORTED TO GROUND 
    1. Measure the resistance between ground and the Generator Field Control circuit at the Generator Field harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  6

      No 

      • Repair the Generator Field Control circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. ACTIVE GRILL SHUTTER ACTUATOR 
    1. Replace the Active Grill Shutter Actuator in accordance with the service information. Navigate to Miscellaneous functions and perform the 'Active Grille Shutter Replaced' procedure.
    2. Reconnect the PCM harness connectors.
    3. Turn the ignition on.
    4. With the scan tool erase DTCs. Navigate to Miscellaneous functions and perform the 'Active Grille Shutter Replaced' procedure.
    5. Start the engine.
    6. With the scan tool view DTCs

      Did the DTC return?

      Yes 

      • Go To  7

      No 

      • Repair complete.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Generator and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Generator and Powertrain Control Module connectors.
    4. Perform any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

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