PINPOINT TEST DC: Mass Airflow (MAF) Sensor: Introduction
WARNING: This page is about a different variant/trim than selected.
This pinpoint test is intended to diagnose the following:
- mass airflow (MAF) sensor (12B579)
- harness circuits: MAF, MAFRTN, vehicle power (VPWR), ground (GND), IAT and SIGRTN
- powertrain control module (PCM) (12A650)
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES article.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series 4.6L, E-Series 5.4L, Transit Connect | 190-PIN | B58 | SIGRTN |
| B41 | MAFRTN | ||
| B40 | MAF | ||
| E-Series 6.8L | 170 PIN | E58 | SIGRTN |
| E26 | MAFRTN | ||
| E25 | MAF | ||
| Edge 2.0L, Explorer 2.0L | 154 PIN | E36 | SIGRTN |
| Expedition, F-Series Super Duty, Navigator | 190-PIN | B2 | SIGRTN |
| B2 | MAFRTN | ||
| B40 | MAF | ||
| Explorer 3.5L, F-150 3.7L | 190-PIN | B41 | MAFRTN |
| B40 | MAF | ||
| F-150 6.2L, F-150 5.0L | 190-PIN | B2 | MAFRTN |
| B40 | MAF | ||
| Fiesta | 128 PIN | E1 | SIGRTN |
| E1 | MAFRTN | ||
| E37 | MAF | ||
| Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, Taurus 4V 3.5L | 190-PIN | B58 | SIGRTN |
| B42 | MAFRTN | ||
| B41 | MAF | ||
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B56 | SIGRTN |
| Focus | 154 PIN | E36 | SIGRTN |
| E55 | MAF | ||
| Fusion 3.5L, MKZ | 140 PIN | B58 | SIGRTN |
| B42 | MAFRTN | ||
| B41 | MAF | ||
| Motorhome / Stripped Chassis / Step Van | 190-PIN | B40 | MAF |
| Mustang 5.4L, Mustang 5.0L | 190-PIN | B2 | SIGRTN |
| B40 | MAF | ||
| Mustang 3.7L | 190-PIN | B41 | SIGRTN |
| B40 | MAF | ||
| All other vehicles | 190-PIN | B56 | SIGRTN |
| B41 | MAFRTN | ||
| B40 | MAF |