Fuel Delivery Unit -GX1- / Fuel Pump Control Module -J538-, TESTING: 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.