2. Start the engine and let it idle.
3. Turn on the air conditioning system and keep the coolant temperature below 80°C.
4. Using a voltmeter, measure the voltage between the pins of the connector on the side of the fan regulator, and check that the voltage changes repeatedly as follows in accordance with paragraphs (1) - (3) (pic. 5.7).
- (1) 0 V
- (2) 8.2±2.6V
- (3) Battery voltage±2.6V
Pic. 5.7 Checking the fan speed controller (4G9 engine)
5. If the voltage is repeatedly not changed in accordance with the paragraphs (1) - (3), replace the radiator fan motor and fan controller.