Pinpoint Tests MD: Fuel Pressure Sensor And Fuel Delivery Pressure Switch: Introduction
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
This pinpoint test is intended to diagnose the following:
- fuel delivery pressure switch (9S599)
- fuel pressure and temperature sensor (9G756)
- harness circuits: FDPS, FLP, GND, SIGRTN and VREF
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| FDPS (Fuel Delivery Pressure Switch) | 1 |
| GND (Ground) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| VREF (Reference Voltage) | 3 |
| FLP (Fuel Low Pressure) | 2 |
| SIGRTN (Signal Return) | 4 |
Harness Side
| Circuit | Pin |
|---|---|
| FLP (Fuel Low Pressure) | 34 |
Harness Side
| Circuit | Pin |