Fuel Pressure Sensor 2 -G624-, Checking

WARNING: This page is about a different variant/trim than selected.

Function

The Fuel Pressure Sensor 2 -G624- measures the fuel pressure in the high-pressure fuel system. The Engine Control Module 2 -J624- analyzes the signal and regulates the fuel high pressure through the Fuel Metering Valve 2 -N402- in the high-pressure pump.

Special tools and workshop equipment required

Multimeter
Wiring Diagram
Scan Tool

Test requirements

Fuses OK.
Battery voltage OK
Switch OFF all electrical and electronic accessories.
Vehicles with Auto. Transmission, ensure Selector Lever position is in "P".
Vehicles with Man. Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
Coolant Temperature: ≥ 80 °C.
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS

Test Procedure

Step	Procedure	Result / Action to Take
1	PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK -- Was complaint verified?	YES: Go to Step 2 Fuel Pressure Sensor 2 -G624-, CHECKING => 2 NO: Gather more Information from customer about the complaint
2	IGNITION: ON DISCONNECT: Fuel Pressure Sensor 2 -G624- electrical connector CHECK: Fuel Pressure Sensor 2 -G624- wiring connector terminals 1 to 3 for voltage SPECIFIED VALUE: About 5.0 V IGNITION: OFF -- Was value obtained?	YES: Go to Step 3 Fuel Pressure Sensor 2 -G624-, CHECKING => 3 NO: Go to Step 4 Fuel Pressure Sensor 2 -G624-, CHECKING => 4
3	REMOVE: Engine Control Module 2 -J624-. Refer to appropriate service information. CHECK: Fuel Pressure Sensor 2 -G624- electrical connector terminals 2 to the Engine Control Module 2 -J624- electrical connector terminals T60a / 25. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω) -- Was value obtained?	YES: REPLACE: Fuel Pressure Sensor 2 -G624-. Refer to appropriate Repair Information. GO TO: Step 5 Fuel Pressure Sensor 2 -G624-, CHECKING => 5 NO: CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals REPAIR: faulty wiring or connector GO TO: Step 5 Fuel Pressure Sensor 2 -G624-, CHECKING => 5
4	REMOVE: Engine Control Module 2 -J624-. Refer to appropriate service information. CHECK: Fuel Pressure Sensor 2 -G624- electrical connector terminals 1 to the Engine Control Module 2 -J624- electrical connector terminals T60a / 14. CHECK: Fuel Pressure Sensor 2 -G624- electrical connector terminals 3 to the Engine Control Module 2 -J624- electrical connector terminals T60a / 26. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω) -- Was value obtained?	YES: REPLACE Engine Control Module 2 -J624- Refer to appropriate Repair Information GO TO: Step 5 Fuel Pressure Sensor 2 -G624-, CHECKING => 5 NO: CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals REPAIR: faulty wiring or connector GO TO: Step 5 Fuel Pressure Sensor 2 -G624-, CHECKING => 5
5	Final Procedure Perform a road test to verify repair. Do any DTC's return:	YES: Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY . Perform the diagnostic procedure for that DTC. NO: Repair is complete, Generate readiness code. Refer to READINESS CODE . Return vehicle to Customer