technical data VOLKSWAGEN CORRADO 1993 Owner's Manual

MAINTENANCE INFORMATION
Article Text (p. 9)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:14PMFig. 8: Connecting Scan Tester to Data Link Connector (Corrado)
Courtesy of Volkswagen United States, Inc.
NOTE: For more information on scan tester connections
refer to the G - TESTS W/CODES article in
the ENGINE PERFORMANCE section.
INFORMATION LABEL LOCATIONSFig. 9: Information Label Locations
Courtesy of Volkswagen United States, Inc.

MAINTENANCE INFORMATION
Article Text (p. 11)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:14PM
Application Quantity (1)
A/C System R-12 Refrigerant
1990-92 (up to 7/92) ............................. 37-40 Ozs.
A/C System R-134a Refrigerant (2)
1993-94 (from 7/92) ........................... 28.2-31.8 Ozs.
Cooling System
4-Cyl. ...................................... 6.8 Qts. (6.5L)
V6 .......................................... 9.1 Qts. (8.6L)
Engine Oil (3)
4-Cyl. ...................................... 4.3 Qts. (4.0L)
V6 .......................................... 6.3 Qts. (6.0L)
Fuel Tank
4-Cyl. ..................................... 14.5 Gals. (55L)
V6 ......................................... 18.5 Gals. (55L)
Automatic Transmission
Fluid Change ................................ 3.2 Qts. (3.0L)
Overhaul .................................... 5.9 Qts. (5.6L)
Manual Transmission ........................... 2.1 Qts. (2.0L)
Final Drive
Differential (A/T) (4) ....................... 0.8 Qt. (.75L)
(1) - Capacities are recommended or calculated levels. Always use
dipstick (if available) to measure level.
(2) - Use of R-12 in a R134a system will result in SEVERE DAMAGE.
(3) - Includes oil filter change.
(4) - Lifetime fill.ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ WHEEL & TIRE SPECIFICATIONS
Wheel and tire sizes vary according to vehicle and equipment
and can be found on tire information label on each vehicle. Wheel and
tire specifications and tire inflation pressures are listed on a label
found inside fuel tank flap.
NOTE: Snow chains must be used on drive wheels, in pairs only.
WHEEL TIGHTENING
Tighten all wheel lugs to 80 ft. lbs. (110 N.m).
BATTERY SPECIFICATIONS
CAUTION: When battery is disconnected, vehicles equipped with
computers may lose memory data. When battery power is
restored, driveability problems may exist on some vehicles.
These vehicles may require a relearn procedure. See COMPUTER
RELEARN PROCEDURES article in the GENERAL INFORMATION
section.
All models use BCI group 41 batteries with cold crank rating

N - REMOVE/INSTALL/OVERHAUL
Article Text
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:21PM
ARTICLE BEGINNING
1993 ENGINE PERFORMANCE
Removal, Overhaul & Installation
Corrado SLC
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may
exist until computer systems have completed a relearn
cycle. See the COMPUTER RELEARN PROCEDURES article in
GENERAL INFORMATION before disconnecting battery.
INTRODUCTION
Removal, overhaul and installation procedures are covered in
this article. If component removal and installation is primarily an
unbolt and bolt-on procedure, only a torque specification may be
furnished.
CAUTION: When disconnecting battery, obtain and record radio
anti-theft code. If wrong code is entered into radio after
power is restored, radio will become inoperable.
IGNITION SYSTEM
NOTE: Corrado SLC ignition system removal and installation
information not available from manufacturer. These vehicles
are equipped with a distributorless ignition system.
DISTRIBUTOR
FUEL SYSTEM
FUEL SYSTEM PRESSURE RELEASE
To relieve fuel system pressure, remove fuel pump fuse (No.
5, 13 or 18) or fuel pump relay to deactivate fuel pump. Place a clean
shop rag around fuel line fitting and slowly loosen fitting.
WARNING: Fuel system pressure release procedure is not available
from manufacturer. Fuel will discharge when disconnecting
fuel system components. Disconnect ignition coil output
stage wiring harness to deactivate ignition. DO NOT smoke
or work near heaters or other fire hazards. Keep a fire
extinguisher handy.
FUEL PUMP
Removal & Installation (Corrado SLC)
1) Obtain and record radio anti-theft code. Disconnect

SCHEDULED SERVICES
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 09:22PM
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR BAR WARNING
NOTE: For information on air bag DIAGNOSIS & TESTING or DISPOSAL
PROCEDURES, see AIR BAGS article in the ACCESSORIES/SAFETY
EQUIPMENT Section.
System circuit is grounded by 2 screws beneath the driver's
seat. DO NOT use these screws to ground any other accessory. DO NOT
ground any other components near this system.
AIR CONDITIONING SERVICING (1993 & LATER)
CAUTION: Avoid breathing R-134a refrigerant and PAG lubricant vapors,
exposure may irritate eyes, nose and throat. To remove
R-134a from system use R-134a recycling equipment that meets
SAE J2210 specifications. If accidental system discharge
occurs, ventilate work area before resuming service.
WARNING: R-134a service equipment or vehicle A/C systems SHOULD NOT
be pressure tested or leak tested with compressed air. Some
mixtures of air/R134a have shown to be combustible at
elevated pressures. These mixtures are dangerous and may
cause fire and/or explosions. See AIR CONDITIONING SERVICE
article in GENERAL INFORMATION section.
ANTI-LOCK BRAKE SYSTEM
The anti-lock brake system contains electronic equipment that
can be susceptible to interference caused by improperly installed or
high output radio transmitting equipment. Since this interference
could cause the possible loss of the anti-lock braking capability,
such equipment should be installed by qualified professionals.
On models equipped with anti-lock brake systems, ALWAYS
observe the following cautions:
* DO NOT attempt to bleed hydraulic system without first
referring to the appropriate ANTI-LOCK BRAKE SYSTEM article
in the BRAKES Section.
* DO NOT mix tire sizes. As long as tires remain close to the
original diameter, increasing the width is acceptable.
Rolling diameter must be identical for all 4 tires. Some
manufacturers recommend tires of the same brand, style and
type. Failure to follow this precaution may cause inaccurate
wheel speed readings.
* Use ONLY recommended brake fluids. DO NOT use silicone brake
fluids in an ABS-equipped vehicle.
BATTERY WARNING
WARNING: When battery is disconnected, vehicles equipped with
computers may lose memory data. When battery power is

SCHEDULED SERVICES
Article Text (p. 8)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:22PMFig. 4: Connecting Scan Tester to Data Link Connector (Corrado)
Courtesy of Volkswagen United States, Inc.
NOTE: For more information on scan tester connections
refer to the G - TESTS W/CODES article in
the ENGINE PERFORMANCE section.
INFORMATION LABEL LOCATIONSFig. 5: Information Label Locations
Courtesy of Volkswagen United States, Inc.

SPECIFICATIONS & ELECTRIC COOLING FANS
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 09:23PM
fan is not coming on at proper temperature and engine is
overheating.
Corrado SLC, Passat GLX
The cooling fan is either a 1 or 2-speed motor. If vehicle is
equipped with single-speed motor, the fan comes on at 198-207øF (92-
97
øC) and turns off at 183-196øF (84-91øC). If equipped with a 2-speed
motor, low speed of cooling fan should come on at 198-208
øF (92-98øC)
on vehicles without A/C, or 183-207
øF (84-97øC) on vehicles with A/C.
Low speed will shut off at 183-196
øF (84-91øC) on all vehicles. High
speed comes on at 210-226
øF (99-108øC) on vehicles without A/C, or
201-226
øF (94-108øC) on vehicles with A/C. High speed will shut off at
196-220
øF (91-104øC) on all vehicles.
After-Run Thermoswitch
An after-run switch is used to help prevent fuel
vaporization. The thermoswitch turns cooling fan on when temperatures
in engine compartment exceeds 230
øF (110øC), and turns it off at 217øF
(103
øC).
Passat GL
The cooling fan is a 2-speed motor. Low speed of cooling fan
should come on at 198-207
øF (92-97øC) and will shut off at 183-196øF
(84-91
øC). High speed comes on at 210-221øF (99-105øC) and will shut
off at 196-208
øF (91-98øC).
TROUBLE SHOOTING
NOTE: Trouble shooting information not available from manufacturer.
TESTING
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
Corrado SLC & Passat GLX (2.8L)
1) Ensure engine is cold. Connect Scan Tester (VAG 1551) to
Data Link Connectors (DLC) located in center console, in front of
shift lever.
2) Start engine and allow it to idle. With scan tester in
READ TEST VALUE BLOCK function, select group No. 01 and read coolant
temperature value in field No. 2 of scan tester. Temperature value
must increase uniformly without interruption. If value increases as
specified, select END OUTPUT function on scan tester.
3) If displayed value does not change or if engine
malfunctions during certain temperature ranges, turn ignition off and
measure engine coolant temperature sensor resistance. See ECT SENSOR
LOCATION table. Replace ECT sensor if resistance is not within
specification. See ECT SENSOR RESISTANCE table.
Passat GL
1) Ensure engine is cold. Connect Scan Tester (VAG 1551) to
Data Link Connectors (DLC) located in center console. Start engine and

VR65 ENGINE: AFFIX NEW VACUUM HOSE ROUTING LABEL
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 09:26PM
Osnabrueck, Germany
5. Evaluation of Emissions and Driveability of the Defect:
Not Applicable.
6. Available Emissions Data:
Not Applicable.
7. Anticipated Follow-Up Action:
VWoA will recall all affected vehicles and instruct dealers to
affix a new label in addition to performing safety recall work.
The details of the safety recall have been reported to the
NHTSA.ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄATTACHMENT I
RECALL CAMPAIGN BULLETIN - SQ
Date: July 1993
SECURE ENGINE COMPARTMENT ELECTRICAL WIRING AND AFFIX
VACUUM HOSE ROUTING LABEL
REPLACEMENT PARTS REQUIRED
ÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄRepair Step
³ Quantity ³ Description ³ Part Number
ÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ A
³ 1 (290 mm) ³ Protective Sleeve ³ N905 930.01

³ 1 ³ Beading ³ 535 853 879 A

³ 1 ³ Tie Wrap ³ N020 906.3

³ 3 ³ Tie Wrap ³ ZVW 601 100
B
³ 2 ³ Lock Nut ³ N902 920.01
C
³ ³ No parts required ³ D
³ 1 ³ Beading ³ 701 947 149A
E
³ 1 ³ Clamp ³ 535 253 139
F
³ 1 ³ ECM ³ 095 927 731BD
G
³ 1 ³ Label ³ 021 010 058G
ÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄ General Repair Information
REPAIR STEPS TO BE PERFORMED
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ VIN Range
³ Repair Steps
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄFrom 50_NK 000 001 through 50_PK 002 707
³ A, B, C, D, E and G
From 50_PK 000 708 through 50_PK 003 049
³ A, B, C, D, and E

VR65 ENGINE: AFFIX NEW VACUUM HOSE ROUTING LABEL
Article Text (p. 11)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:26PMFig. 12: Vacuum Hose Routing Label
CAMPAIGN DATA ENTRY PROCEDURE
REIMBURSEMENT CODESÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÂÄÄÄÄÂÄÄÄÄÂÄÄÄÄÂÄÄÄÄÂÄÄÄÄ
³ SQ ³ SQ ³ SQ ³ SQ ³ SQ ³ SQ
Work Scope
³ 12 ³ 13 ³ 14 ³ 15 ³ 16 ³ 17
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step A: Secure Cooling Fan
³ x ³ x ³ x ³ x ³ x ³ x
Harness
³ ³ ³ ³ ³ ³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step B: Modify Balance Weight
³ x ³ x ³ ³ ³ ³ Mounting
³ ³ ³ ³ ³ ³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step C: Route Ignition Cables/
³ x ³ x ³ x ³ x ³ x ³ x
Breather Hose
³ ³ ³ ³ ³ ³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step D: Route Engine Compartment
³ x ³ x ³ x ³ x ³ x ³ x
Harness
³ ³ ³ ³ ³ ³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step E: Secure Exhaust System
³ ³ ³ ³ ³ ³ - Check
³ x ³ ³ x ³ ³ x ³ - Correct
³ ³ x ³ ³ x ³ ³ x
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄRepair Step F: Replace Transmission
³ ³ ³ ³ ³ x ³ x
Control Module (VIN
³ ³ ³ ³ ³ ³ NK004148- NK012142 Only)
³ ³ ³ ³ ³ ³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÄ

WAVEFORMS - INJECTOR PATTERN TUTORIAL
Article Text (p. 7)
1993 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Wednesday, March 22, 2000 09:26PM
everything together it does not miss anything (though this is also a
severe weakness that we will look at later). If an injector has a
fault where it occasionally skips a pulse, the meter registers it and
the reading changes accordingly.
Let's go back to figuring out dwell/duty readings by using
injector on-time specification. This is not generally practical, but
we will cover it for completeness. You NEED to know three things:
* Injector mS on-time specification.
* Engine RPM when specification is valid.
* How many times the injectors fire per crankshaft revolution.
The first two are self-explanatory. The last one may require
some research into whether it is a bank-fire type that injects every
360ø of crankshaft rotation, a bank-fire that injects every 720ø, or
an SFI that injects every 720
ø. Many manufacturers do not release this
data so you may have to figure it out yourself with a frequency meter.
Here are the four complete steps to convert millisecond on-
time:
1) Determine the injector pulse width and RPM it was obtained
at. Let's say the specification is for one millisecond of on-time at a
hot idle of 600 RPM.
2) Determine injector firing method for the complete 4 stroke
cycle. Let's say this is a 360
ø bank-fired, meaning an injector fires
each and every crankshaft revolution.
3) Determine how many times the injector will fire at the
specified engine speed (600 RPM) in a fixed time period. We will use
100 milliseconds because it is easy to use.
Six hundred crankshaft Revolutions Per Minute (RPM) divided
by 60 seconds equals 10 revolutions per second.
Multiplying 10 times .100 yields one; the crankshaft turns
one time in 100 milliseconds. With exactly one crankshaft rotation in
100 milliseconds, we know that the injector fires exactly one time.
4) Determine the ratio of injector on-time vs. off-time in
the fixed time period, then figure duty cycle and/or dwell. The
injector fires one time for a total of one millisecond in any given
100 millisecond period.
One hundred minus one equals 99. We have a 99% duty cycle. If
we wanted to know the dwell (on 6 cylinder scale), multiple 99% times
.6; this equals 59.4
ø dwell.
Weaknesses of Dwell/Duty Meter
The weaknesses are significant. First, there is no one-to-one
correspondence to actual mS on-time. No manufacturer releases
dwell/duty data, and it is time-consuming to convert the mS on-time
readings. Besides, there can be a large degree of error because the
conversion forces you to assume that the injector(s) are always firing
at the same rate for the same period of time. This can be a dangerous
assumption.
Second, all level of detail is lost in the averaging process.
This is the primary weakness. You cannot see the details you need to
make a confident diagnosis.