Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. 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 CAC TEMPERATURE SENSOR
1. Let engine cold soak up to eight hours.
2. Turn the ignition on.
3. With the scan tool, monitor CAC Temperature 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 CAC Temperature Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 5.
CAC TEMPERATURE SENSOR
1. Turn the ignition off.
2. Disconnect the CAC Temperature Sensor harness connector.
3. Remove the CAC Temperature Sensor and reconnect the wiring to the sensor.
4. Turn the ignition on.
5. With the scan tool in Sensors, monitor the CAC Temperature 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
  - Replace 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
  - Replace the CAC Temperature Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .