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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 832 (3.0L Diesel - DTCS P050E-00 To P067B-00 - 1500) >> Diagnosis And Testing >> P05F3-00-Exhaust AFTERTREATMENT Power Relay Control Circuit Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With the scan tool, erase DTCs in the Powertrain Control Module (PCM).
    3. Start the engine and allow it to reach normal operating temperature.
    4. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. SCR RELAY 2 
    1. Turn the ignition off.
    2. Use a known good relay in place of the SCR Relay 2 in the Power Distribution Center (PDC).
    3. Ignition on, engine not running.
    4. With the scan tool, erase DTCs in the Powertrain Control Module (PCM).
    5. Start the engine and allow it to reach normal operating temperature.
    6. With the scan tool, select View DTCs.

      Does the DTC return?

      Yes 

      • Go To  3

      No 

      • Repair is complete. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer).
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  3. CHECK THE (K402) SCR RELAY 2 CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Remove the SCR Relay 2.
    3. Disconnect the PCM C1 harness connector.
    4. Measure the resistance of the (K402) SCR Relay 2 Control circuit between the SCR Relay 2 (in the PDC) and the PCM C1 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Replace the Powertrain Control Module in accordance with the service information. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer).
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  4. POWER DISTRIBUTION CENTER (PDC) 
    1. Disconnect the PDC C3 harness connector.
    2. Measure the resistance of the (K402) SCR Relay 2 Control circuit between the SCR Relay 2 (in the PDC) and the PDC C3 harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Replace the Power Distribution Center (PDC) in accordance with the service information. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer).
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Repair the (K402) SCR Relay 2 Control circuit (between the PDC and the PCM) for an open/high resistance. Reset the SCR Timer: Using the scan tool, go to Misc. Functions>SCR Extend Mileage W Active Fault (and reset the Timer).
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
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