Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Overall Function Check
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be confirmed.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up pressure to escape. Then turn the cap all the way off.
With CONSULT-II
- Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to DIAGNOSTIC PROCEDURE .
- Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to DIAGNOSTIC PROCEDURE .
- Start engine and make sure that the cooling fan operates. If not, go to DIAGNOSTIC PROCEDURE .
- Select "TARGET FAN RPM" in "ACTIVE TEST" mode with CONSULT-II.
- Change "TRGT FAN RPM" indication by touching "UP" and "DOWN", then make sure that the cooling fan operating speed changes according to "TRGT FAN RPM" indication.
- If the results are NG, go to DIAGNOSTIC PROCEDURE .
Without CONSULT-II
- Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level. If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to DIAGNOSTIC PROCEDURE .
- Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to DIAGNOSTIC PROCEDURE .
- Start engine.
Be careful not to overheat engine.
- Make sure that the cooling fan operates. If not, go to DIAGNOSTIC PROCEDURE .
- Turn ignition switch OFF.
- Disconnect radiator coolant temperature sensor harness connector.
- Connect 2.2kΩ resistor to engine coolant temperature sensor harness connector.
- Restart engine and make sure that cooling fan operates at higher speed than the speed at step 4.
Be careful not to overheat engine.
- If NG, go to DIAGNOSTIC PROCEDURE
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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