Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
A faulty EGR Outlet Temperature Sensor can cause this DTC to set. Repair any EGR Outlet Temperature Sensor DTCs before proceeding.
NOTE:
If DTC P245C or P245D are present, perform those test procedures before proceeding. Refer to :
1. P245C-EGR COOLER BYPASS CONTROL CIRCUIT LOW
2. P245D-EGR COOLER BYPASS CONTROL CIRCUIT HIGH
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 return?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (F344) SMART POWER RELAY FEED CIRCUIT
1. Turn the ignition off.
2. Disconnect the EGR Cooler Bypass Valve harness connector.
3. Turn the ignition on.
4. Measure the voltage on the (F344) Smart Power Relay Feed circuit at the EGR Cooler Bypass Valve harness connector.
  Is the voltage equal to battery voltage?
  
  Yes
  - Go To 3.
  No
  - Repair the (F344) Smart Power Relay Feed circuit for an open or short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K670) EGR COOLER BYPASS VALVE SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking EGR Cooler Bypass Valve Signal Circuit For An Open Or High Resistance
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance of the (K670) EGR Cooler Bypass Valve Signal circuit between the EGR Cooler Bypass Valve harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (K670) EGR Cooler Bypass Valve Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CLEAN THE EGR COOLER
1. Remove and clean the EGR Cooler and EGR Outlet Temperature Sensor.
2. Reinstall the EGR Cooler and EGR Outlet Temperature Sensor.
3. Turn the ignition on.
4. With the scan tool, erase DTCs.
5. Start the engine and test drive the vehicle.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 5.
  No
  - Repair complete.
  - Perform the DIESEL AFTERTREATMENT VALIDATION - 6.7L. Refer to DIESEL AFTERTREATMENT VALIDATION- 6.7L .
EGR COOLER BYPASS VALVE
1. Replace the EGR Cooler Bypass Valve.
2. Turn the ignition on.
3. With the scan tool, erase DTCs.
4. Start the engine and test drive the vehicle.
5. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair complete.
  - Perform the DIESEL AFTERTREATMENT VALIDATION - 6.7L. Refer to DIESEL AFTERTREATMENT VALIDATION- 6.7L .