Sonata GL V6-2.5L (1999)
Using GST
INSPECTION (USING VOLTMETER)
NOTE:
1. Before checking, warm up the engine until the engine coolant temperature reaches 80 to 95 °C (176 to 205 °F)
1. Apply battery voltage directly between terminal 3 and terminal 4.
NOTE: Take care when applying the voltage. Damage will result if the terminals are incorrect or are short circuited.
2. Connect a digital-type voltmeter between terminal 1 and terminal 2.
3. While repeatedly racing the engine, measure the oxygen sensor output voltage.
4. if there is a problem, there may be an oxygen sensor malfunction.
Tightening torque: Heated oxygen sensor 40-50 Nm (400-500 kg.cm, 29-36 lb.ft)