Optima L4-2.4L (2001)
USING GST
INSPECTION
NOTE:
1. Before checking, warm up the engine until the engine coolant temperature reaches 80 to 95 °C (176 to 205 °F).
2. Use an accurate digital voltmeter.
Standard Value
1. Disconnect the oxygen sensor connector, and measure the resistance between terminal 3 and terminal 4.
2. Replace the oxygen sensor if there is malfunction.
3. 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.
4. Connect a digital-type voltmeter between terminal 1 and terminal 2.