3.
Measure resistance between Pin No3(Power) terminal and Pin No. 4(Control) terminal of the HO2S(S1) Heater. (Component Side)
Fig.1) 'Zero Set' Function
Specification : Approx. 9.0Ω [20 °C(68 °F)]
IG Key "OFF".
Disconnect HO2S(S1) connector.
Measure resistance between Pin No3(Power) terminal and Pin No. 4(Control) terminal of the HO2S(S1) Heater. (Component Side)
Fig.1) 'Zero Set' Function
Specification : Approx. 9.0Ω [20 °C(68 °F)]
Is the measured Value within specification?
 | ▶ Go to "Verification of Vehicle Repair" procedure. |
 | ▶ Carefully re-do this troubleshooting guide steps. ▶ If no problems were found with the circuits or connectors, replace the O2S(S1) and go to "Verification of Vehicle Repair" procedure. |
