Component locations, overview

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2006 Volkswagen Golf, 2005 Volkswagen Jetta, 2005 Volkswagen Golf, 2004 Volkswagen Jetta, and 2004 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.

Components A to C are not shown on the illustration.

A - Brake Pedal Switch F47 * and Brake Light Switch F *

Together in one housing in footwell on brake pedal
Checking → Brake light switch F and Brake Pedal Switch F47 , checking

B - Throttle Position (TP) Sensor G79 *

In footwell on accelerator
Checking: → 20 - FUEL SUPPLY

C - Clutch Vacuum Vent Valve Switch F36

In footwell on clutch pedal
Checking → Clutch Pedal Switch F36 , checking

Fig 1: Diesel-Direct Fuel Injection System Component Locations

GW00001100

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Exhaust gas recirculation (EGR) valve

Checking: → 26 - EXHAUST SYSTEM, EMISSION CONTROLS

2 - Change-over Valve for Intake Manifold Flap N239 *

3 - Positive Crankcase Ventilation (PCV) Heating Element N79

Check voltage supply for N79 between terminals 1 and 2 of the connector with ignition switched on; Specification: At least 11.5 V

4 - Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 *

Checking voltage supply → Diesel fuel injection components and functions, checking
Replace → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , replacing
Coding → Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) J248 , coding
Checking altitude sensor F96 → Manifold Absolute Pressure (MAP) sensor G71 and Barometric Pressure (BARO) sensor F96 , checking , Checking intake manifold pressure and altitude sensor

5 - Connector

Release to disconnect
Only disconnect or connect with ignition switched off

6 - Exhaust gas recirculation valve N18 */**

Checking: → 26 - EXHAUST SYSTEM, EMISSION CONTROLS

7 - Injector

For No. 3 cylinder with Needle Lift sensor G80 *

8 - Wastegate Bypass Regulator Valve N75 */**

Checking: → 21 - TURBOCHARGER, G-CHARGER

9 - Mass Air Flow (MAF) sensor G70 *

Checking → Mass Air Flow (MAF) sensor G70 , checking

10 - Engine Coolant Temperature (ECT) Sensor G62 *

For engine control module
With ECT sensor G2
If necessary release pressure in cooling system before removing
Checking → Engine Coolant Temperature (ECT) sensor G62 , checking

Wiring chamber 3 and wiring chamber 4 for G62

11 - Vacuum Reservoir

12 - 10 Nm

13 - Engine Speed (RPM) Sensor G28 *

Checking → Engine Speed (RPM) Sensor G28 , checking

14 - O-ring

Replace

15 - 2 pin connector

Brown
For Needle Lift Sensor G80

16 - 3 pin connector

For engine speed sensor G28

17 - 10 pin connector

Black
For Fuel Temperature Sensor G81
For Cold Start Injector N108
For Fuel Cut-off Valve N109

For Quantity Adjuster N146
For Modulating Piston Displacement Sensor G149

18 - Cold Start Injector N108 */**

Checking injection timing control range → Diesel injection timing control range, checking

19 - Fuel Cut-off Valve N109 */**

20 - Injection pump quantity adjuster

With Fuel Temperature Sensor G81 *
With Quantity Adjuster N146 *
With Modulating Piston Displacement Sensor G149 *

21 - Manifold Absolute Pressure (MAP) Sensor G71 * and Intake Air Temperature (IAT) Sensor G72 *

Checking intake manifold pressure sensor → Manifold Absolute Pressure (MAP) sensor G71 and Barometric Pressure (BARO) sensor F96 , checking , Checking intake manifold pressure sensor and altitude sensor
Checking intake manifold temperature sensor → Checking intake manifold temperature sensor