Evap System; Connection Diagram - Evap System - Volkswagen Golf 2015 Repair Manual

6

EVAP System

⇒ 6.1 Connection Diagram - EVAP System , page 67
⇒ 6.2 Overview - EVAP System , page 69
⇒ 6.3 EVAP Canister, Removing and Installing , page 70
⇒ 6.4 Fuel Tank, Checking Ventilation , page 72
⇒ 6.5 Fuel System, Checking for Leaks , page 76
6.1

Connection Diagram - EVAP System

⇒ 6.1.1 Connection Diagram - EVAP System, with Fuel Tank
Leak Detection , page 67
⇒ 6.1.2 Connection Diagram - EVAP System, without Fuel Tank
Leak Detection , page 68
6.1.1 Connection Diagram - EVAP System,
with Fuel Tank Leak Detection
Note
The fuel tank leak detection function is based on the premise that
the fuel systems creates a natural vacuum when the fuel in the
fuel tank becomes colder. The temperature and pressure meas‐
urements are required for the fuel tank leak detection. The tem‐
perature sensor is integrated in the Fuel Tank Leak Detection
Control Module - J909- . The Fuel Tank Pressure Sensor - G400-
is installed in the pressure regulating valve. The system is con‐
sidered to be closed when the measured vacuum is 2.5 mbar as
the fuel tank temperature drops. If there is no vacuum, then there
is a leak in the fuel system, which will result in an entry in the
engine control module Diagnostic Trouble Code (DTC) memory.
Golf 2015 ➤ , Golf Variant 2015 ➤
Fuel Supply - Gasoline Engines - Edition 01.2016
67
6. EVAP System