Elantra L4-1595cc 1.6L DOHC (1993)
Harness Inspection Procedure
Sensor Inspection
NOTE: Before checking, warm up the engine until the engine coolant temperature reaches 80 to 95° C (176 to 205° F). Use an accurate digital
voltmeter.
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, because damage will result if the terminals are incorrect or are short circuited.
4. Connect a digital-type voltmeter between terminal 1 and terminal2.
5. While repeatedly racing the engine, measure the oxygen sensor output voltage.