5 L4-2.3L (2007)
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HO2S terminal B and power supply
Rear HO2S heater resistance inspection
1. Disconnect the rear HO2S connector.
2. Measure the rear HO2S resistance between terminals C and D.
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If not within the specification, replace the rear H02S.
Rear HO2S heater resistance 2-50 ohms
Rear HO2S circuit open/short inspection (heater)
1. Disconnect the PCM connector.
2. Disconnect the rear H02S connector.
3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)
Open circuit
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It there is no continuity, there is an open circuit. Repair or replace the wiring harness.
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H02S terminal D and PCM terminal 2C
Short circuit
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If there is no continuity, there is a short circuit. Repair or replace the wiring harness.
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HO2S terminal C and body ground
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H02S terminal D and power supply
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H02S terminal D and body ground