Fuel Pressure Sensor, Checking: Notes
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools and workshop equipment required
- Multimeter
- Wiring diagram.
Test requirements
- The Fuel Pump (FP) Control Module -J538- OK.
- The Motronic Engine Control Module (ECM) - J623- fuses OK.
- The fuel filter OK.
- The battery voltage at least 12.5 V.
- All electrical consumers switched off (radiator fan must NOT run during test).
- A/C switched off.
- The fuel tank at least 1 /4 filled.
- The ignition switched off.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the engine cover with air filter. Refer to appropriate service information.
-- Using a Multimeter, Check the Fuel Pressure Sensor - G247- electrical harness connector terminals 1 to 3 for voltage.
Specified value: near 5.0 V
-- Switch the ignition off.
-- Continue test according to the following table:
| Value | Cause | Test |
|---|---|---|
| If the specified value was not obtained: | Open or shorted circuit | CHECKING WIRING |
| If the specified value was obtained: | Check reference signal circuit | CHECKING WIRING |