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Monitor GDS Data

note

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

Connect GDS and select "DTC Analysis" mode.

Select “Diagnostic Trouble Codes(DTC)” button, Press "DTC Status" to check DTC's information from the DTCs menu.

Confirm that "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.

Read "DTC Status" parameter.

Record all DTC’s, DTC status and freeze frame data. Does DTC Status indicate “Present”?

note

- History (Not Present) fault : DTC occurred but has been cleared.

- Present fault : DTC is occurring at present time.

	▶ Go to next step as below.
	▶ Fault is intermittent caused by poor contact in the sensor's and/or PCM/ECM's connector or was repaired and PCM/ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

Monitor GDS Data

Allow the engine to cool completely.

Run the cold engine at idle for 5 minutes and observe cooling fan status.

note

Ensure that the A/C is OFF.

Check the engine coolant temperature parameter at idle with the GDS.

Is the engine coolant temperature increase to above 50℃(122℉).

	▶ Go to "Verification of Vehicle Repair" procedure.
	▶ Go to next step as below.

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

▶ Check for short circuit in cooling fan harness or cooling fan relay. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

▶ - With ignition "ON", Install GDS and select "COOLING FAN RELAY" on the Actuation Test mode.

- Activates "COOLING FAN RELAY" by pressing "START" key

- Repeat this procedure 4 or 5 times to ensure cooling fan reliability.

- If cooling fan works properly, go to next step as below.

- If NG, check for intermittent fault caused by poor contact in the sensor's and/or PCM's connector. Repair as necessary and go to "Verification of Vehicle Repair" procedure.