Servicing cruise control system — AUDI

Notes:

Checking vacuum system => Page
96-51
.
Troubleshooting

=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder

Control unit
Removing and installing => Fig.
1

Test connection with cable link
Production only
Automatic gearbox only

Earth connection
Beneath instrument panel

6-way connector
Blue

Linkage
Adjusting, vehicles with petrol engine:
4/5-cyl.-engine =>Fig.
2
,
6-cyl.-engine =>Fig.
3

Actuator
Removing and installing => Fig.
4

Vacuum hose
Remove to perform leak test => Page
96-51

Connector
For vacuum pump

Vacuum pump
Removal and installation, vehicles with 4 and 5-cyl. engine => Fig.
5
, vehicles with 6-cyl. engine =>Fig.
6

Rubber grommet
Vent valve at clutch pedal
Removing => Fig.
7
Installing and adjusting => Fig.
8

Vent valve
At brake pedal
Removing => Fig.
7
Installing and adjusting => Fig.
8

Brake light switch

26-pin connector
Black
For cruise control switch

26-pin connector
Blue
For dash insert

Steering column switch with controls for CCS.
Removing and installing => Page
94-28

Dash panel insert
Travel signal connection, blue connector, cavity 18

Fig.1
Removing and installing control unit

Removing glove compartment

=> Body Assembly Work; Repair Group 70; Dash Panel; Removing and installing glove compartment
Body Assembly Work
Dash Panel
Removing and installing glove compartment

Use recessed head screwdriver to detach control unit from back of instrument panel.
Remove control unit from retainer and unplug connector.

Fig.2
Adjusting linkage at actuator, vehicles with 4 and 5- cyl.-engine

Start engine.
Use nut -1- to adjust clearance between bushing and stop plate -2-.
Specified value: 0,5 ... 1 mm

Fig.3
Adjusting linkage at actuator, vehicles with 6 - cyl.-engine

Start engine.
Use nut -1- to adjust clearance between bushing and stop plate -2-.
Specified value: 0.5 ... 1 mm

Fig.4
Removing and installing actuator

Unscrew linkage.
Pull off vacuum hose.
Unscrew actuator -arrow-from holder (25 Nm).

Fig.5
Removing and installing vacuum pump, vehicles with 4 and 5-cyl. engine

Pull pump complete with rubber studs upwards out of bracket.

Fig.6
Removing and installing vacuum pump, vehicles with 6-cyl. engine

Remove securing nuts -1- (3 Nm).
Remove vacuum pump -2- with holder -3- from bracket.
Pull off vacuum hose and connector; remove vacuum pump with holder from engine compartment.
Pull vacuum pump complete with rubber studs upwards out of bracket; if necessary, position screwdriver between vacuum pump and bracket and prise out vacuum pump.

Fig.7
Removing vent valve at clutch pedal/brake pedal

Remove driver's side tray.

=> General body repairs; Repair group 70; Dash panel, Removing driver's storage compartment
General body repairs
Dash panel, Removing driver's storage compartment

Pull connector and vacuum hose off vent valve at clutch pedal -1-/brake pedal -2-.
Use special tool 2041 to push vent valve out through bushing.

Fig.8
Installing and adjusting vent valve at clutch pedal/brake pedal

Place vent valve in position.
Use 10 mm socket wrench to push home vent valve through bushing.
To adjust vent valve, pull back clutch pedal -1-/ brake pedal -2- as far as it will go.