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. Ignition on, engine not running.
2. Record freeze frame data and clear DTCs.
3. Turn the ignition off for 75 seconds.
4. Start the engine and let idle for up to two minutes.
5. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK FOR HIGH RESISTANCE IN THE (K366) FUEL CONTROL ACTUATOR DRIVER CIRCUIT
1. Turn the ignition off.
2. Disconnect the Fuel Control Actuator harness connector.
3. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Measure the resistance of the (K366) FCA Driver circuit between the Fuel Control Actuator harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the (K366) Fuel Control Actuator Driver circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR HIGH RESISTANCE IN THE (K365) FUEL CONTROL ACTUATOR RETURN CIRCUIT
1. Measure the resistance of the (K365) FCA Return circuit between the Fuel Control Actuator harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K365) FCA Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
FUEL CONTROL ACTUATOR
1. Reconnect the PCM C1 harness connector.
2. Replace the Fuel Control Actuator in accordance with the Service Information. Refer to ACTUATOR, FUEL CONTROL, REMOVAL .
3. Turn the ignition on and clear any DTCs.
4. Start the engine and let idle for at least two minutes.
5. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 5
  No
  - Test complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
POWERTRAIN CONTROL MODULE
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read PCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .