PINPOINT TEST DZ: Universal Heated Oxygen Sensor (HO2S): Introduction: Notes
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)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Edge 3.5L, Edge 3.7L, Explorer 3.7L, Explorer TiVCT 3.5L, F-150 3.7L, Flex TiVCT 3.5L, MKS 3.7L, MKT 3.7L, MKX, MKZ 3.7L, Mustang 3.7L, Taurus TiVCT 3.5L, Taurus 3.7L |
A | 7 1 3 6 5 2 |
UO2SPCT UO2SPC VPWR UO2SGREF UO2S UO2SHTR |
| Escape 2.5L, Fusion 2.5L, Transit Connect 2.5L |
B | 6 1 5 4 2 |
UO2SPC VPWR UO2SGREF UO2S UO2SHTR |
| All other vehicles | C | 5 1 4 2 6 3 |
UO2SPCT UO2SPC VPWR UO2SGREF UO2S UO2SHTR |