Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. 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 - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (K689) EGR BYPASS MOTOR (-) CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the EBV harness connector.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance between ground and the (K689) EGR Bypass Motor (-) circuit at the EBV harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K689) EGR Bypass Motor (-) circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3
CHECK THE (K689) EGR BYPASS MOTOR (-) CIRCUIT FOR OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K689) EGR Bypass Motor (-) circuit between the EBV harness connector and the PCM C1 harness connector.
  Is the resistance more than 5.0 Ohms?
  
  Yes
  - Repair the (K689) EGR Bypass Motor (-) circuit for an open/high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4
POWERTRAIN CONTROL MODULE
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 (K689) EGR Bypass Motor (-) circuit.
  Did P245D 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 MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL . Refer to PCM/ECM/TCM PROGRAMMING .