Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs in the PCM.
3. Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.
4. Start the engine and let it run for two minutes.
5. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE (K49) CAC OUT TEMPERATURE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the CAC Out Temperature Sensor harness connector.
3. Turn the ignition on.
4. Measure the voltage on the (K49) CAC Out Temperature Signal circuit at the CAC Out Temperature Sensor harness connector.
  Is the voltage above 5.2 Volts?
  
  Yes
  - Go To 3
  No
  - Repair the (K49) Charge Air Cooler Out Temperature Signal circuit for a short to voltage.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (K49) CAC OUT TEMPERATURE SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K49) CAC Out Temperature Signal circuit between the CAC Out Temperature Sensor harness connector and the PCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (K49) CAC Out Temperature Signal circuit for an open/high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (K50) RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K50) Return circuit between the CAC Out Temperature Sensor harness connector and the PCM C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (K50) Return circuit for an open/high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 5
CAC OUT TEMPERATURE SENSOR
1. Replace the Charge Air Cooler (CAC) Out Temperature Sensor in accordance with the service information.
2. Turn the ignition on.
3. With the scan tool, erase PCM DTCs.
4. Perform several ignition key cycles leaving the ignition on for at least 10 seconds per cycle.
5. Start the engine and let it run for two minutes.
6. With the scan tool, read PCM DTCs.
  Does the scan tool display this DTC?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .