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
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 - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK FOR HIGH RESISTANCE IN THE (K366) FUEL CONTROL ACTUATOR DRIVER CIRCUIT

Fig 1: Checking Fuel Control Actuator Driver Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
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

Fig 2: Checking Fuel Control Actuator Return Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
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.
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
  - Replace and program the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Test complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .