1.
Measure resistance between terminals 3 and 4 of the sensor connector (Component side).
a.
Specification : 3~4Ω[at 20℃(68℉)]
Measure resistance between terminals 3 and 4 of the sensor connector (Component side).
Specification : 3~4Ω[at 20℃(68℉)]
Is resistance within the specification?
YES
▶ Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
▶ Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "Verification of Vehicle Repair" procedure
