LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 2018 >> Passat GT >> Repair and Diagnosis >> Engine Performance >> System >> Engine & Transmission System Diagnostics (CDVB) - Transmission DTC Tables & Diagnostic Procedures >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Fuel Delivery Unit -GX1- / Fuel Pump Control Module -J538-, CHECKING >> General Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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