Pinpoint Test DC: Mass Airflow (MAF) Sensor: Introduction
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 Lincoln Navigator, 2015 Lincoln MKZ, 2015 Lincoln MKX, 2015 Lincoln MKT, and 2015 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- mass airflow (MAF) sensor (12B579)
- harness circuits: IAT, GND, MAF, MAFRTN, SIGRTN and VPWR
- PCM (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series 5.4L, MKX |
A | 4 3 5 6 |
MAFRTN MAF GND VPWR |
| Motorhome/Stripped Chassis/Step Van | A | 5 4 3 |
MAF GND VPWR |
| All other vehicles | A | 4 5 3 |
SIGRTN MAF VPWR |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES .
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series 6.8L, F-650/F-750, F-Series Super Duty |
190-PIN | B2 B40 |
SIGRTN MAF |
| E-Series 5.4L | 190-PIN | B41 B40 |
MAFRTN MAF |
| F-150 | 198 PIN | B2 | SIGRTN |
| Fiesta | 198 PIN | B9 B8 |
SIGRTN MAF |
| Focus | 198 PIN | E36 E55 |
SIGRTN MAF |
| MKT | 190-PIN | B41 B41 B40 |
SIGRTN MAFRTN MAF |
| MKX, Motorhome/Stripped Chassis/Step Van |
190-PIN | B40 | MAF |
| Mustang | 198 PIN | B54 B73 |
SIGRTN MAF |
| All other vehicles | 190-PIN | B41 B40 |
SIGRTN MAF |