Inspect HO2S (S1) Heater
- Ignition "OFF".
- Disconnect HO2S (S1) connector.
- Measure resistance between Pin No. 4 (Power) terminal and Pin No. 5 (Control) terminal of the HO2S (S1) Heater. (Component Side)
Specification: Approx. 3.2Ω ± 0.8Ω at 20°C (68°F)