Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
If there are any DTCs present for the Boost Pressure Sensor or EGR Temperature Sensor, perform the diagnostics for those DTCs before proceeding with this test procedure.
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 30 seconds.
5. Start the vehicle. It may be necessary to drive vehicle to reset DTC.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE EGR CONTROL CIRCUITS FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the EGR Valve harness connector.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance of the (K682) EGR Control 1 circuit between the EGR Valve harness connector and the PCM harness connector.
5. Measure the resistance of the (K684) EGR Control 2 circuit between the EGR Valve harness connector and the PCM harness connector.
6. Measure the resistance of the (K686) EGR Control 3 circuit between the EGR Valve harness connector and the PCM harness connector.
  Is the resistance below 5.0 Ohms for each circuit?
  
  Yes
  - Go To 3.
  No
  - Repair the open or high resistance in the circuit that measured above 5.0 Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE EGR POSITION SIGNAL CIRCUITS FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K683) EGR Position Signal 1 circuit between the EGR Valve harness connector and the PCM harness connector.
2. Measure the resistance of the (K685) EGR Position Signal 2 circuit between the EGR Valve harness connector and the PCM harness connector.
3. Measure the resistance of the (K687) EGR Position Signal 3 circuit between the EGR Valve harness connector and the PCM harness connector.
  Is the resistance below 5.0 Ohms for each circuit?
  
  Yes
  - Go To 4.
  No
  - Repair the open or high resistance in the circuit that measured above 5.0 Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CLEAN THE EGR VALVE
1. Reconnect the PCM C1 harness connector.
2. Remove and clean the EGR Valve in accordance with the service information. Refer to VALVE, Exhaust Gas Recirculation (EGR), 6.7L , Cleaning .
3. Reconnect the EGR Valve harness connector.
4. Turn the ignition on.
5. With the scan tool, erase DTCs.
6. Turn the ignition off for 75 seconds.
7. Start the vehicle. It may be necessary to drive vehicle to reset DTC.
8. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 5.
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
REPLACE THE EGR VALVE
1. Replace the EGR Valve in accordance with the service information. Refer to VALVE, Exhaust Gas Recirculation (EGR), 6.7L , Removal VALVE, Exhaust Gas Recirculation (EGR), 3.7L , Removal VALVE, Exhaust Gas Recirculation (EGR), 4.7L , Removal VALVE, Exhaust Gas Recirculation (EGR), 5.7L , Removal .
2. Turn the ignition on.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Start the vehicle. It may be necessary to drive vehicle to reset DTC.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the service information. Refer to MODULE, Powertrain Control , Removal MODULE, Powertrain Control, 6.7L Diesel [ETJ] , Removal .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .