Pinpoint Test Ab: Cold Start System: Introduction
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, 2020 Lincoln Corsair, and 2020 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Refer to the fuel system WARNING information at the beginning of PINPOINT TEST HC.
Failure to follow these instructions may result in personal injury.
This pinpoint test is intended to diagnose the following:
- fuel injector heaters
- fuel injector heater control module
- harness circuits: FIHC, FIHM, FIH1, FIH2, FIH3, GND, PWRGND, VBATT and VPWR
Harness Side
| Circuit | Pin |
|---|---|
| FIH (Fuel Injector Heater) | 1 |
| GND (Ground) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| VBATT (Battery Voltage) | 5 |
| VPWR (Vehicle Power) | 4 |
| PWRGND (Power Ground) | 3 |
| FIHC (Fuel Injection Heater Control) | 2 |
| FIHM (Fuel Injection Heater Monitor) | 1 |
Harness Side
| Circuit | Pin |
|---|---|
| FIH1 (Fuel Injector Heater 1) | 3 |
| FIH2 (Fuel Injector Heater 2) | 1 |
| FIH3 (Fuel Injector Heater 3) | 4 |
Harness Side
| Circuit | Pin |