PINPOINT TEST DZ: Universal Heated Oxygen Sensor (HO2S): Introduction
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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 |