Pinpoint Tests Dz: Universal Heated Oxygen Sensor (Ho2S): Introduction
WARNING:
To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
This pinpoint test is intended to diagnose the following:
- universal HO2S (9Y460)
- harness circuits: UO2S11, UO2SGREF11, UO2SHTR11, UO2SPC11, UO2SPCT11 and VPWR
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| VPWR (Vehicle Power) | 4 |
| UO2S11 (Universal Oxygen Sensor Bank 1, Sensor 1) | 6 |
| UO2SGREF11 (Universal Oxygen Sensor Ground Reference Bank 1, Sensor 1) | 2 |
| UO2SHTR11 (Universal Oxygen Sensor Heater Bank 1, Sensor 1) | 3 |
| UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) | 1 |
| UO2SPCT11 (Universal Oxygen Sensor Pumping Current Trim Bank 1, Sensor 1) | 5 |
Harness Side
| Circuit | Pin |
|---|---|
| UO2S11 (Universal Oxygen Sensor Bank 1, Sensor 1) | E7 |
| UO2SGREF11 (Universal Oxygen Sensor Ground Reference Bank 1, Sensor 1) | E19 |
| UO2SHTR11 (Universal Oxygen Sensor Heater Bank 1, Sensor 1) | E47 |
| UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) | E8 |
| UO2SPCT11 (Universal Oxygen Sensor Pumping Current Trim Bank 1, Sensor 1) | E20 |