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
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 750 seconds.
5. Start the engine.
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 (K670) EGR COOLER BYPASS VALVE SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking EGR Cooler Bypass Valve Signal Circuit For Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the EGR Cooler Bypass Valve harness connector.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance between ground and the (K670) EGR Cooler Bypass Valve Signal circuit at the EGR Cooler Bypass Valve harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K670) EGR Cooler Bypass Valve Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
POWERTRAIN CONTROL MODULE

Fig 2: Engine Control Module (ECM) Operation
Courtesy of CHRYSLER GROUP, LLC
1. Reconnect the PCM C1 harness connector.
2. Turn the ignition on.
3. While monitoring a scan tool, connect a jumper between 12 Volts and the (K670) EGR Cooler Bypass Valve Signal circuit.
  Did P245C become active?
  
  Yes
  - Replace the EGR Cooler Bypass Valve in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to PCM - REMOVAL , also see PCM/ECM / TCM PROGRAMMING .