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)
| Pin | Circuit |
|---|---|
| 5 | UO2SPCT11 (Universal Oxygen Sensor Pumping Current Trim Bank 1, Sensor 1) |
| 1 | UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) |
| 3 | UO2SHTR11 (Universal Oxygen Sensor Heater Bank 1, Sensor 1) |
| 2 | UO2SGREF11 (Universal Oxygen Sensor Ground Reference Bank 1, Sensor 1) |
| 6 | UO2S11 (Universal Oxygen Sensor Bank 1, Sensor 1) |
| 4 | VPWR (Vehicle Power) |
| Pin | Circuit |
|---|---|
| E20 | UO2SPCT11 (Universal Oxygen Sensor Pumping Current Trim Bank 1, Sensor 1) |
| E8 | UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) |
| E47 | UO2SHTR11 (Universal Oxygen Sensor Heater Bank 1, Sensor 1) |
| E19 | UO2SGREF11 (Universal Oxygen Sensor Ground Reference Bank 1, Sensor 1) |
| E7 | UO2S11 (Universal Oxygen Sensor Bank 1, Sensor 1) |