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.
- ACTIVE DTC
- Turn the ignition on.
- With the scan tool, record all Freeze frame data.
- With the scan tool, erase DTCs.
- Turn the ignition off for 75 seconds.
- Start the engine.
- 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 STANDARD PROCEDURE .
- CHECK THE (K671) EGR BYPASS VALVE (EBV) POSITION CIRCUIT FOR A SHORT TO VOLTAGE
- Turn the ignition off.
- Disconnect the EBV harness connector.
- Disconnect the PCM C1 harness connector.
- Measure the voltage on the (K671) EBV Position circuit at the EBV harness connector.
Is there voltage present?
Yes
- Repair the (K671) EGR Cooler Bypass Valve Position circuit for a short to voltage.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
No
- Go To 3
- CHECK THE (K671) EBV POSITION CIRCUIT FOR AN OPEN/HIGH RESISTANCE
- Measure the resistance of the (K671) EBV Position circuit between the PCM harness connector and the EBV harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Go To 4
No
- Repair the (K671) EGR Cooler Bypass Valve Position circuit for an open or high resistance.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
- Measure the resistance of the (K671) EBV Position circuit between the PCM harness connector and the EBV harness connector.
- EGR COOLER BYPASS VALVE
- Replace the EGR Cooler Bypass Valve in accordance with the Service Information.
- Reconnect the EBV harness connector.
- Reconnect the PCM C1 harness connector.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- With the scan tool, read DTCs.
Did the DTC return?
Yes
- Replace Powertrain Control Module in accordance with the Service Information.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
No
- Repair complete.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .