PINPOINT TEST DD: Fuel Rail Pressure (FRP) and Fuel Rail Pressure Temperature (FRPT) Sensors: Introduction
WARNING: This page does not describe the selected car, but rather 22 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
VEHICLE FUEL SYSTEMS ARE PRESSURIZED EVEN WHEN THE ENGINE IS NOT RUNNING. TO AVOID FIRE OR PERSONAL INJURY, DISABLE THE FUEL DELIVERY SYSTEM AND RELIEVE FUEL SYSTEM PRESSURE BEFORE REMOVING ANY FUEL SYSTEM COMPONENT. REFER TO THE FUEL SYSTEM INFORMATION AT THE BEGINNING OF PINPOINT TEST HC
. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
NOTE:
With the engine running, the FRP PID value may be 48-70 kPa (7-10 psi) higher than a fuel pressure reading taken with a mechanical gauge.
This pinpoint test is intended to diagnose the following:
- fuel rail pressure (FRP) sensor (6B288)
- fuel rail pressure temperature (FRPT) sensor (9G756)
- harness circuits: FRP and FRT
- powertrain control module (PCM) (12A650)
Tables and Graphs
FRP SENSOR VOLTAGE AND PRESSURE SPECIFICATIONS
| Voltage | Pressure, MPa (gauge) | Pressure, psi (gauge) |
|---|---|---|
| 4.80 | 27.95 | 4054 |
| 4.50 | 26 | 3771 |
| 3.50 | 19.5 | 2828 |
| 2.50 | 13.0 | 1885 |
| 1.50 | 6.5 | 943 |
| 0.50 | 0 | 0 |
| 0.20 | -1.95 | -283 |
FRPT SENSOR VOLTAGE AND PRESSURE SPECIFICATIONS
| Voltage | Pressure (kPa) | Pressure (psi) |
|---|---|---|
| 4.5 | 482 | 70 |
| 3.9 | 413 | 60 |
| 3.4 | 344 | 50 |
| 2.8 | 275 | 40 |
| 2.2 | 207 | 30 |
| 1.6 | 138 | 20 |
| 1.1 | 69 | 10 |
| 0.5 | 0 | 0 |
FRPT SENSOR TEMPERATURE, VOLTAGE, AND RESISTANCE SPECIFICATIONS
| Temperature | Sensor | ||
|---|---|---|---|
| °C | °F | Volts | K Ohms |
| 100 | 212 | 0.47 | 2.073 |
| 95 | 203 | 0.54 | 2.405 |
| 90 | 194 | 0.61 | 2.800 |
| 85 | 185 | 0.70 | 3.273 |
| 80 | 176 | 0.80 | 3.840 |
| 75 | 167 | 0.92 | 4.524 |
| 70 | 158 | 1.06 | 5.351 |
| 65 | 149 | 1.21 | 6.356 |
| 60 | 140 | 1.38 | 7.584 |
| 55 | 131 | 1.56 | 9.091 |
| 50 | 122 | 1.77 | 10.949 |
| 45 | 113 | 1.99 | 13.252 |
| 40 | 104 | 2.23 | 16.123 |
| 35 | 95 | 2.48 | 19.720 |
| 30 | 86 | 2.74 | 24.253 |
| 25 | 77 | 3.00 | 30.000 |
| 20 | 68 | 3.26 | 37.332 |
| 15 | 59 | 3.50 | 46.745 |
| 10 | 50 | 3.73 | 58.911 |
| 5 | 41 | 3.95 | 74.745 |
| 0 | 32 | 4.13 | 95.501 |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE CONNECTOR PINS REFERENCE CHART
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Crown Victoria, Grand Marquis, Town Car | 170 PIN | B40, E57 E19 B41, E58, T41 E32 |
VREF FRT SIGRTN FRP |
| E-Series 4.6L | 190-PIN | E63 B58, E64, T40 |
VREF SIGRTN |
| E-Series 6.8L, Ranger | 170 PIN | B40, E57 B41, E58, T41 |
VREF SIGRTN |
| E-Series 5.4L, Expedition, Navigator | 190-PIN | B52, E63 B58, E64, T40 |
VREF SIGRTN |
| Edge, MKX | 190-PIN | B52, E35, T7 B56, E49 |
VREF SIGRTN |
| Explorer, F-150 3.7L | 190-PIN | B52 B56, E49, T41 |
VREF SIGRTN |
| F-150 6.2L, F-150 5.0L | 190-PIN | B52 B56, E32, T26, T38 |
VREF SIGRTN |
| F-150 3.5L | 198 PIN | B11, B52, E8 B16, B37, B38, E20, E32 E35 |
VREF SIGRTN FRP |
| F-Series Super Duty, Mustang 5.0L |
190-PIN | B52, E20, T31 B56, E32, T38 |
VREF SIGRTN |
| Fiesta | 128 PIN | B16, T11, T13 E3 |
VREF SIGRTN |
| Flex 4V 3.5L, MKS 3.7L, Taurus 4V 3.5L | 190-PIN | B29, B64 B58, E58 |
VREF SIGRTN |
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B52, B66, E35 B56, E49 E29 |
VREF SIGRTN FRP |
| Focus, Transit Connect | 190-PIN | B52, B66, E63 B58, E64, T40 |
VREF SIGRTN |
| Fusion 3.5L, MKZ | 140 PIN | B33, E57 B58, E58 |
VREF SIGRTN |
| MKT 3.7L | 190-PIN | B29, B64 B58, E58, T43 |
VREF SIGRTN |
| Mustang 5.4L | 190-PIN | B52, E20, T31 E26 B56, E32, T38 E23 |
VREF FRT SIGRTN FRP |
| All other vehicles | 190-PIN | B52, E35 B56, E49, T41 |
VREF SIGRTN |