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
NOTE:
If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding with this test.
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 75 seconds.
5. Turn the ignition on.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE AIR CLEANER BOX FOR PROPER SEALING
1. Check the connection between the Inlet Air Tube and the Air Cleaner Box to make sure that it is sealed properly.
  Is the Air Cleaner Box to Inlet Air Tube installed and sealed properly?
  
  Yes
  - Go To 3
  No
  - Repair the connection between the Air Cleaner Box and the Inlet Air Tube.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE CHARGE AIR COOLER AND SYSTEM FOR DIRT OR DEBRIS
1. Remove the hoses at the Charge Air Cooler and Turbo outlet and inspect the system for signs of excessive oil, dirt or debris.
  Does the Charge Air Cooling system show signs of excessive dirt or debris?
  
  Yes
  - Clean the Charge Air Cooling system in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4
CHECK THE TEMPERATURE/PRESSURE MAP SENSOR
1. Let engine cold soak up to eight hours.
2. Turn the ignition on.
3. With the scan tool, monitor Temperature/Pressure MAP Sensor, EGR Orifice Temperature Sensor and Coolant Temperature Sensor.
  NOTE:
  Make sure ambient air temperature is above -6.7°C (20°F) when performing this test.
  
  NOTE:
  Make sure there is no external heat source, such as a block heater, operating during this test or within the 8 hour cold soak.
  
  Does the CAC Temperature Sensor read differently from the other sensors?
  
  Yes
  - Replace the Temperature/Pressure MAP Sensor in accordance with the Service Information. Refer to SENSOR, TMAP-INTAKE MANIFOLD, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 5
TEMPERATURE/PRESSURE MAP SENSOR
1. Turn the ignition off.
2. Disconnect the Temperature/Pressure MAP Sensor harness connector.
3. Remove the Temperature/Pressure MAP Sensor and reconnect the wiring to the sensor.
4. Turn the ignition on.
5. With the scan tool in Sensors, monitor the Temperature/Pressure MAP Sensor while heating the sensor with an external heat source (DO NOT USE OPEN FLAME).
  Does the reading from the sensor increase at least 5°F on the scan tool?
  
  Yes
  - Go To 6
  No
  - Replace the Temperature/Pressure MAP Sensor in accordance with the Service Information. Refer to SENSOR, TMAP-INTAKE MANIFOLD, REMOVAL .
  - 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 .