2.
Probe(+) : HO2S terminal NO4.
Probe(-) : HO2S terminal NO3.
a.
Specification: 80℃(176℉) : 8.0~14.0Ω
Measure resistance between HO2S heater battery power and heater ground terminal.
Probe(+) : HO2S terminal NO4.
Probe(-) : HO2S terminal NO3.
Specification: 80℃(176℉) : 8.0~14.0Ω
Is measured resistance within specification?
YES
Problem is intermittent or was repaired and ECM memory was not cleared
Go to ""Verification of Vehicle Repair"
NO
Open circuit HO2S heater
Repair as necessary and go to "Verification of Vehicle Repair" procedure
