PINPOINT TEST H: Fuel Control: Introduction
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. 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
This pinpoint test is intended to diagnose the following:
- HO2S (9G444)
- universal HO2S (9Y460)
- fuel injectors (9F593)
- harness circuits: HO2S12, HO2S22, HTR12, HTR22, SIGRTN, UO2SPC and VPWR
- vacuum systems
- PCM (12A650)
For additional information on heated oxygen sensor (HO2S), refer to Section 1, Catalyst And Exhaust Systems
Harness Side
| Circuit | Pin |
|---|---|
| HO2S12 (Heated Oxygen Sensor Bank 1, Sensor 2) | 4 |
| SIGRTN (Signal Return) | 3 |
| HTR12 (Heater Oxygen Sensor Bank 1, Sensor 2) | 1 |
| VPWR (Vehicle Power) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| UO2SPC (Universal Oxygen Sensor Pumping Current) | 1 |
Harness Side
| Circuit | Pin |
|---|---|
| UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1) | E33 |
| HO2S12 (Heated Oxygen Sensor Bank 1, Sensor 2) | E26 |
| SIGRTN (Signal Return) | E13 |
| HTR12 (Heater Oxygen Sensor Bank 1, Sensor 2) | E81 |
| VPWR (Vehicle Power) | B101 |
| VPWR (Vehicle Power) | B102 |
| VPWR (Vehicle Power) | B100 |