Fuel Pressure Regulator Valve -N276-, Checking: General Description

The Engine/Motor Control Module -J623- regulates the Fuel Pressure Regulator Valve -N276- directly at the high pressure fuel pump to control the low pressure valve inside the high pressure fuel 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 automatic transmission, ensure the selector lever position is in "P".
• Vehicles with manual transmission, ensure the shifter lever position is in "N" with the parking brake applied.
• Observe all safety precautions: SAFETY PRECAUTIONS .
• View clean working conditions: CLEAN WORKING CONDITIONS .