Using Voltmeter/Hi-Scan
HEATED OXYGEN SENSOR OUTPUT VOLTAGE SPECIFICATIONS
| Check item | Check condition | Engine condition | Test specification |
|---|---|---|---|
| Heated oxygen sensor output voltage | Warm-up | When decelerating suddenly from 4000 RPM | A. 200mV or lower |
| When engine is suddenly raced | B. 600~1000mV |
NOTE:
If you release the accelerator pedal suddenly after engine running about 4000 RPM, fuel supply will stop for short period and the O2 sensor service data in the HI-SCAN will display values in the A range.
When you suddenly press on the accelerator pedal down, the voltage will reach B range.
When you let the engine idle again, the voltage will fluctuate between ranges A and B. In this case, the O2 sensor can be determined as good.
When you suddenly press on the accelerator pedal down, the voltage will reach B range.
When you let the engine idle again, the voltage will fluctuate between ranges A and B. In this case, the O2 sensor can be determined as good.