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Home >> Mercury >> 1995 >> Sable V6-182 3.0L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Pinpoint Tests >> H - Fuel Control >> H22 - Check Continuity of Power Ground Circuit
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H22 - Check Continuity of Power Ground Circuit




- Key "OFF".

- Heated Oxygen Sensor (HO2S) disconnected.

- Measure resistance between PWR GND circuit at the HO2S vehicle harness connector and battery negative post.

- Is resistance less than 5.0 ohms?

Yes -- For Diagnostic Trouble Codes (DTC) 136, 172 and 176 go to H23. H23 - Attempt to Eliminate DTC 136, 172 or 176

No -- Service open in PWR GND circuit. Reconnect HO2S sensor. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

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