Pinpoint Test Dz: Universal Heated Oxygen Sensor (Ho2S): Introduction
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, 2020 Lincoln Corsair, and 2020 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
While conducting tests on a hot engine take all safety precautions to prevent skin contact with hot engine components. Failure to follow these instructions may result in personal injury
NOTE:
Only diagnose the suspect universal HO2S indicated by the DTC
This pinpoint test is intended to diagnose the following:
- universal HO2S (9Y460)
- harness circuits: UO2S, UO2SGREF, UO2SHTR, UO2SPC, UO2SPCT, and VPWR
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| UO2SHTR (Universal Oxygen Sensor Heater) | 3 |
| UO2S (Universal Oxygen Sensor) | 6 |
| UO2SGREF (Universal Oxygen Sensor Ground Reference) | 2 |
| VPWR (Vehicle Power) | 4 |
| UO2SPC (Universal Oxygen Sensor Pumping Current) | 1 |
| UO2SPCT (Universal Oxygen Sensor Pumping Current Trim) | 5 |
Harness Side
| Circuit | Pin |
|---|---|
| UO2SPCT11 (Universal Oxygen Sensor Pumping Current Trim Bank 1, Sensor 1) | E34 |
| UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) | E33 |
| UO2SHTR11 (Universal Oxygen Sensor Heater Bank 1, Sensor 1) | E76 |
| UO2SGREF11 (Universal Oxygen Sensor Ground Reference Bank 1, Sensor 1) | E32 |
| UO2S11 (Universal Oxygen Sensor Bank 1, Sensor 1) | E31 |