Fuel Pump Control Module - J538- / Fuel Delivery Unit -GX1-, Checking: Notes

GENERAL DESCRIPTION 

The Engine Control Module -J623- Tells The Fuel Pump Control Module -J538- The Demand Needed For Fuel Volume And Pressure And Activates The Transfer Fuel Pump -G6-. The Transfer Fuel Pump -G6- Transfers Fuel To The Rest Of The Fuel System, Where It Is Monitored By The Engine Control Module -J623- Through Sensors, And Controlled Through Regulators And/Or Metering Valves.

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.
• Observe all safety precautions: SAFETY PRECAUTIONS .
• View clean working conditions: CLEAN WORKING CONDITIONS .
• For Hybrid vehicles refer to: HIGH VOLTAGE SYSTEM GENERAL WARNINGS .