Evaporative emissions system, diagram

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Volkswagen Jetta, 2002 Volkswagen GTI, 2001 Volkswagen Jetta, 2001 Volkswagen GTI, and 2000 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Evaporative Emissions System, Diagram

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Fuel filler door module

2 - Fuel tank

3 - Fuel delivery unit

4 - Upper intake manifold

5 - Pressure regulator

6 - Supply rail with injectors

7 - Fuel filter

Install position: - arrow - indicates direction of flow

8 - Evaporative emission (EVAP) canister purge regulator valve N80

In engine compartment on right
Installed position: - arrow - indicates direction of flow
Check via Output DTM: Refer to 01 ON BOARD DIAGNOSTIC (OBD)
Checking operation, refer to Evaporative emission (EVAP) canister purge regulator valve N80 , checking

9 - Test socket

10 - Gravity/overflow valve

11 - Pressure retention valve

12 - Change-over valve

13 - EVAP canister

In right rear wheel housing underneath liner
Fastened to body

14 - Leak Detection Pump (LDP) V144

On EVAP canister

15 - Air filter for leak detection pump