Diagnostic Test

LOW ENGINE COOLANT LEVEL
1. Turn the ignition on.
  WARNING:
  Allow the engine to cool before opening the cooling system. The system may be under pressure. Extreme burns or scalding may result. Failure to follow these instructions can result in possible serious or fatal injury.
2. Inspect the cooling system for proper coolant level.
  Were any problems found?
  
  Yes
  - Inspect the vehicle for a coolant leak. Repair as necessary in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read Powertrain Control Module (PCM) DTCs and Freeze Frame Data and record on the repair order.
3. Using the recorded Freeze Frame Data and the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
4. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 3
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK COOLING SYSTEM OPERATION
1. Check the overall cooling system for any problems such as poor flow due to a restrictions or possible faulty Water Pump operation. Refer to DIAGNOSIS AND TESTING .
2. Verify proper operation of the HT Coolant Control Valve.
  Were any issues found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK FOR THE PROPER MOUNTING OF THE ENGINE OIL COOLER
1. Turn the ignition off.
2. Visually inspect the Engine Oil Cooler for proper mounting to the engine.
3. Verify proper coolant flow through the Engine Oil Cooler.
  Were any issues found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK FOR PROPER OIL FLOW THROUGH THE ENGINE OIL COOLER
1. Remove the Engine Oil Cooler from the engine.
2. Visually inspect for any blockages or signs of poor oil flow through the cooler.
  Were there any signs of restricted oil flow?
  
  Yes
  - Repair the cause of the oil flow restriction.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the Engine Oil Cooler in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .