VOLKSWAGEN CORRADO 1993 Repair Manual

COMPUTER RELEARN PROCEDURES
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
ARTICLE BEGINNING
GENERAL INFORMATION
Computer Relearn Procedures
All Models
* PLEASE READ THIS FIRST *
The following general procedures are to be used if
driveability problems are encountered after power loss or battery has
been disconnected. These procedures may provide an aid in eliminating
these problems.
To reduce the possibility of complaints, after any service
which requires battery power to be disconnected, vehicle should be
road tested.
COMPUTER RELEARN PROCEDURES
Vehicles equipped with engine or transmission computers may
require a relearn procedure after vehicle battery is disconnected.
Many vehicle computers memorize and store vehicle operation patterns
for optimum driveability and performance. When vehicle battery is
disconnected, this memory is lost. The computer will use default data
until new data from each key start is stored. As computer memorizes
vehicle operation for each new key start, driveability is restored.
Vehicle computers may memorize vehicles operation patterns for 40 of
more key starts.
Customers often complain of driveability problems during
relearn stage because vehicle acts differently then before being
serviced. Depending on type and make of vehicle and how it is
equipped, the following complaints (driveability problems) may exist:
* Harsh Or Poor Shift Quality
* Rough Or Unstable Idle
* Hesitation Or Stumble
* Rich Or Lean Running
* Poor Fuel Mileage
These symptoms and complaints should disappear after a number
of drive cycles have been memorized. To reduce the possibility of
complaints, after any service which requires battery power to be
disconnected, vehicle should be road tested. If a specific relearn
procedure is not available, the following procedure may be used:
Automatic Transmission
* Set parking brake, start engine in "P" or "N" position.
Warm-up vehicle to normal operating temperature or until
cooling fan cycles.
* Allow vehicle to idle for one minute in "N" position. Select

COMPUTER RELEARN PROCEDURES
Article Text (p. 2)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
"D" and allow engine to idle for one minute.
* Accelerate at normal throttle position (20-50%) until vehicle
shifts into top gear.
* Cruise at light to medium throttle.
* Decelerate to a stop, allowing vehicle to downshift, and use
brakes normally.
* Process may be repeated as necessary.
Manual Transmission
* Place transmission in Neutral position.
* Ensure emergency brake has been set and all accessories
are turned off.
* Start engine and bring to normal operating temperature.
* Allow vehicle to idle in Neutral for one minute.
* Initial relearn is complete: process will be completed during
normal driving.
Some manufacturers identify a specific relearn procedure
which will help establish suitable driveability during relearn stage.
These procedures are especially important if vehicle is equipped with
and electronically controlled automatic transmission or transaxle.
Always complete procedure before returning vehicle to customer.
END OF ARTICLE

CRUISE CONTROL SYSTEM
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
ARTICLE BEGINNING
1993 ACCESSORIES & EQUIPMENT
Volkswagen Cruise Control Systems
Volkswagen; Corrado SLC, EuroVan, Passat
DESCRIPTION & OPERATION
The cruise control system allows driver to maintain a
constant cruising speed above 22 MPH without depressing the
accelerator pedal. The cruise control system consists of a vacuum
pump, vacuum servo unit, vent valves and a control module. See Fig. 1
and 2.
The cruise control system is operated by placing RES/ON/OFF switch in
the ON position. Accelerate to desired speed and press the SET button.
This sets the cruising speed and stores it in memory. Pushing the SET
button again will increase the previous set speed until the button is
released.
Cruise control system will disengage temporarily when the
brake or clutch pedal is depressed. To reactivate system, slide the
RES/ON/OFF button to RESUME. The vehicle will automatically accelerate
to the previous set speed. To erased set speed from memory, slide the
RES/ON/OFF button to OFF.
WARNING: DO NOT shift into Neutral when cruise control system is
switched on.Fig. 1: Identifying Cruise Control System Components
(Corrado SLC Is Shown; Passat Is Similar)
Courtesy of Volkswagen United States, Inc.

CRUISE CONTROL SYSTEM
Article Text (p. 2)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PMFig. 2: Identifying Cruise Control System Components (EuroVan)
Courtesy of Volkswagen United States, Inc.
ADJUSTMENTS
VACUUM ACTUATOR
Corrado SLC & Passat
Loosen vacuum actuator adjustment sleeve and push forward.

CRUISE CONTROL SYSTEM
Article Text (p. 3)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
See Fig. 3. Adjust cable as necessary. Pull adjustment sleeve toward
rear until .14" (3.5 mm) of play is obtained at pedal plate. Check
accelerator pedal clearance.Fig. 3: Adjusting Vacuum Actuator (Corrado SLC & Passat)
Courtesy of Volkswagen United States, Inc.
VACUUM SERVO LINKAGE
EuroVan
Ensure throttle linkage is fully released. Push adjustment
sleeve and linkage forward. See Fig. 4. Turn adjusting linkage to
lock. Ensure throttle linkage operates freely.Fig. 4: Adjusting Vacuum Servo Linkage (EuroVan)
Courtesy of Volkswagen United States, Inc.
REMOVAL & INSTALLATION
BRAKE & CLUTCH VENT VALVES
Removal
Remove trim panel and vent duct from beneath left side of

CRUISE CONTROL SYSTEM
Article Text (p. 4)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
instrument panel. Brake and clutch switches are located on a bracket
in front of associated pedal. See Fig. 5 or 6. Disconnect wiring and
vacuum hose from valve. Rotate vent valve out of bracket.
Installation
Install brake or clutch vent valve into bracket until valve
is seated. Pull back pedal as far as it will go. Slowly release pedal
to adjust switch.Fig. 5: Identifying Brake & Clutch Vent Valves System Components
(Corrado SLC & Passat)
Courtesy of Volkswagen United States, Inc.Fig. 6: Identifying Brake & Clutch Vent Valves
System Components (EuroVan)
Courtesy of Volkswagen United States, Inc.

CRUISE CONTROL SYSTEM
Article Text (p. 5)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
CONTROL UNIT
Removal & Installation
Remove glove compartment. Remove control module mounting
bracket. Remove control unit wiring harness connectors. Remove control
module. To install, reverse removal procedure.
STEERING COLUMN CONTROL SWITCH
Removal & Installation
Remove steering wheel. Loosen steering column switch clamp
and pull up steering column switch. Disconnect electrical connector
and remove steering column control switch. To install, reverse removal
procedure.
VACUUM PUMP
Removal & Installation
On Corrado SLC and Passat models, remove windshield washer
mounting bracket. Remove battery. On all models, remove screws and
vacuum pump fender. See Fig. 7 or 8. To install, reverse removal
procedure.Fig. 7: Identifying Vacuum Pump Components
(Corrado SLC & Passat)
Courtesy of Volkswagen United States, Inc.Fig. 8: Identifying Vacuum Pump Components (EuroVan)
Courtesy of Volkswagen United States, Inc.

CRUISE CONTROL SYSTEM
Article Text (p. 6)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 08:58PM
VACUUM SERVO
Removal & Installation
1) Detach linkage and remove vacuum hose from vacuum servo.
Remove nut and servo from bracket. To install, reverse removal
procedure. Adjust linkage as necessary.
TESTING
VACUUM CHECK
Locate vacuum pump. See Fig. 7 or 8. Remove vacuum line from
vacuum pump. Push vacuum actuator diaphragm inward. Apply brake pedal
by hand until pressure is felt. Release brake pedal. If diaphragm
moves, repair or replace as necessary.
WIRING DIAGRAMS
See appropriate chassis wiring diagram in WIRING DIAGRAMS.
END OF ARTICLE

ELECTRICAL COMPONENT LOCATOR
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:09PM
ARTICLE BEGINNING
1993 ELECTRICAL COMPONENT LOCATION
Volkswagon Electrical Components
Corrado
BUZZERS, RELAYS & TIMERSÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄComponent Component Location
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄABS Main Relay On fuse/relay panel, behind
left side of dash.

ELECTRICAL COMPONENT LOCATOR
Article Text (p. 2)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:09PM Pump Relay On fuse/relay panel, behind
left side of dash.
A/C Clutch Relay Mounted on top left of
radiator fan shroud.