Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 729

3

Secondary Air Injection System

⇒ “3.1 Overview - Secondary Air Injection System”, page 352

 .

⇒ “3.2  Secondary Air Injection Pump Motor V101 , Removing and

Installing”, page 353

 .

⇒ “3.3  Secondary Air Injection Solenoid Valve N112 , Removing

and Installing”, page 353

 .

3.1

Overview - Secondary Air Injection System

1 - Air Filter Housing

❑ Removing and instal‐

ling. Refer to

⇒ “3.2 Air Filter Housing,

Removing and Instal‐

ling”, page 294

 .

2 - Connecting Line

❑ From the Secondary Air

Injection Pump Motor -

V101- on the air filter

housing

3 - Connecting Line

❑ From the Secondary Air

Injection Solenoid Valve

- N112- on the Secon‐

dary Air Injection Pump

Motor - V101-

4 - Secondary Air Injection

Sensor 1 - G609-
5 - Seal

❑ Replace after removing

the Secondary Air Injec‐

tion Solenoid Valve -

N112- .

6 - Secondary Air Injection Sol‐

enoid Valve - N112-

❑ Secondary Air Injection

Solenoid Valve - N112- ,

Removing and instal‐

ling. Refer to

⇒ “3.3  Secondary Air In‐

jection Solenoid Valve

N112 , Removing and

Installing”, page 353

 .

7 - Bolt

❑ 9 Nm

8 - Electric Connection

❑ For the Secondary Air Injection Solenoid Valve - N112-

9 - Electric Connection

❑ For the Secondary Air Injection Sensor 1 - G609-

10 - Nut

❑ 8 Nm

11 - Secondary Air Injection Pump Motor - V101-

❑ Secondary Air Injection Pump Motor - V101- , Removing and installing. Refer to

⇒ “3.2  Secondary Air Injection Pump Motor V101 , Removing and Installing”, page 353

 .

3.2

Secondary Air Injection Pump Motor -

V101- , Removing and Installing

Removing
– Remove the noise insulation. Refer to ⇒  Body Exterior; Rep.

Gr.  66 ; Noise Insulation; Overview - Noise Insulation .

– Open the release -arrows- and remove the lines -1- from the

Secondary Air Injection Pump Motor - V101- -2-.

– Disconnect the connector -2- from the Secondary Air Injection

Pump Motor - V101- .

– Remove the nuts -arrows- and the Secondary Air Injection

Pump Motor - V101- -1- with the bracket.

Installing
Install in reverse order of removal. Note the following:
Tightening Specifications
♦ Refer to

⇒ “3.1 Overview - Secondary Air Injection System”,

page 352

3.3

Secondary Air Injection Solenoid Valve

- N112- , Removing and Installing

Caution

This procedure contains mandatory replaceable parts. Refer

to component overview prior to starting procedure.

Mandatory Replacement Parts
♦ Seal - Secondary Air Injection Solenoid
• The flange must not be separated from the Secondary Air In‐

jection (AIR) solenoid valve.

• Both the AIR solenoid valve and the flange are replaced com‐

pletely.

Removing
– Remove the air filter housing. Refer to

⇒ “3.2 Air Filter Housing, Removing and Installing”,

page 294

 .

– Remove the battery tray. Refer to ⇒  Electrical Equipment;

Rep. Gr.  27 ; Battery; Battery Tray, Removing and Installing .

– Free up the wiring harness -1 and 2- from the air guide pipe.
– Loosen the screw-type clamp -3-.
– Remove the bolts -arrows- and remove the air guide pipe.

– Remove the connector -3- from the Secondary Air Injection

Sensor 1 - G609- -1- and unclip the sensor.

– Release both retaining tabs -arrow- from the Secondary Air

Injection Sensor 1 - G609- and Secondary Air Injection Sensor

1 - G609- -1- from the connecting line -2-.

– Remove the connector -3- from the Secondary Air Injection

Solenoid Valve - N112- -2-.

– Squeeze the locking ring on both sides and remove the con‐

necting pipe -1-.

– Remove the bolts -arrows- from the Secondary Air Injection

Solenoid Valve - N112- -1-.

– Remove the bolts -arrows- and the Secondary Air Injection

Solenoid Valve - N112- -1-.

Installing
Install in reverse order of removal. Note the following:
• Replace the seal. Refer to Parts Catalog.
Tightening Specifications
♦ Refer to

⇒ “3.1 Overview - Secondary Air Injection System”,

page 352

 .

4

Special Tools

Special tools and workshop equipment required
♦ Chain Pipe Cutter - VAS6254-

♦ Pneumatic Body Saw - VAS6780-