Monitor DTC Status

Monitor DTC Status

NOTE: If any DTCs relating to ECTS are stored, do ALL REPAIRS associated with those codes before proceeding with further troubleshooting.

1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode
2. Press F4 (DTAL) to select DTC information from the DTCs menu
3. Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions
4. Read "DTC Status" parameter




5. Is parameter displayed "History (Not Present) fault" ?

NOTE:
- History (Not Present) fault : DTC occurred but has been cleared.
- Present fault : DTC is occurring at present time.





Monitor Scantool Data

1. Allow the engine to cool completely
2. Run the cold engine at idle for 5 minutes and observe cooling fan status.

NOTE: Ensure that the A/C is OFF

3. Check the engine coolant temperature parameter at idle with the scantool.
4. Is the engine coolant temperature increase to above 50 °C (122 °F)





5. Are the cooling fans running when engine coolant temperature is low (less than approximately 98 °C (208 °F)) with A/C OFF ?