1990 VOLKSWAGEN CORRADO reset

J - PIN VOLTAGE CHARTSK - SENSOR RANGE CHARTSL - WIRING DIAGRAMSM - VACUUM DIAGRAMSMAINTENANCE INFORMATIONMAINTENANCE REMINDER LIGHT RESET PROCEDURESMETRIC CONVERSIONSMETRIC CONVERSIONSMIRRORS - POWERN - REMOVE/INSTALL/OVERHAULP - EGR FUNCTION TESTINGPOSSIBLE ENGINE STALL DUE TO FUEL RESTRICTIONPRE-ALIGNMENT CHECKSSCHEDULED SERVICESSERVICE INDICATOR & WARNING LIGHTSSTARTER - BOSCHSTEERING COLUMNSTEERING COLUMN SWITCHESSTEERING SYSTEM - POWERSUSPENSION - FRONTSUSPENSION - REARTRANSMISSION REMOVAL & INSTALLATION - A/TTRANSMISSION SERVICING - A/TTRANSMISSION SERVICING - M/TTROUBLE SHOOTING - BASIC PROCEDURESWAVEFORMS - INJECTOR PATTERN TUTORIALWHEEL ALIGNMENT SPECIFICATIONS & PROCEDURESWHEEL ALIGNMENT THEORY/OPERATIONWIPER/WASHER SYSTEMWIRING DIAGRAM SYMBOLSWIRING DIAGRAMS

A/C COMPRESSOR SERVICING
Article Text (p. 13)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:41PM
cover at low pressure side of compressor. Connect Pressurizer
(KV994C1552) to can of R-12 refrigerant. Wrap a rag around compressor
shaft. Apply pressure of 28-71 psi (2-5 kg/cmý) at low pressure
(suction) service valve of compressor. Catch shaft seal seat in rag.
See Fig. 8.
NOTE: If shaft seal cannot be pulled out, reset to its original
position, and pressurize again.
4) Insert shaft seal Remover/Installer (KV994C1143) through
the open end of front cover. Depress carbon seal and hook tool at case
projection of shaft seal. Slowly pull out to remove shaft seal. See
Fig. 9.Fig. 8: Hitachi 6-Cylinder Compressor Shaft Seal Seat Removal
Courtesy of Nissan Motor Co., U.S.A.Fig. 9: Hitachi 6-Cylinder Compressor Shaft Seal Removal
Courtesy of Nissan Motor Co., U.S.A.
Inspection
Check carbon seal surface of shaft seal for damage. Check "O"

A/C-HEATER SYSTEM - MANUAL
Article Text (p. 2)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:41PM
Temperature Control Lever
The temperature control lever controls heating and cooling.
When moved to the left, lever turns compressor on. When moved to the
right, a heater water valve is opened, supplying coolant to heater
core.
HIGH-PRESSURE SWITCH
High-pressure switch shuts compressor off if high pressure
reaches 210 psi (14.8 kg/cmý). High-pressure switch will reset when
pressure decreases to 174 psi (12.2 kg/cm
ý).
LOW-PRESSURE SWITCH
Low-pressure switch cuts off system operation when there is
abnormally low pressure in system. This protects the compressor when
there is not enough R-12 in system. Low-pressure switch shuts
compressor off at 26 psi (1.8 kg/cm
ý).
THERMOSWITCH
Thermoswitch shuts compressor off if coolant temperature
rises above 248
øF (120øC).Fig. 1: Locating A/C Components (Vanagon)
Courtesy of Volkswagen United States, Inc.

AA - USING THIS SECTION (GENERAL HELP INFORMATION)
Article Text (p. 6)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:41PM
1) If no self-diagnostics available, or no trouble codes
present, identify symptom.
2) See trouble shooting procedure to repair complaint. See H
- TESTS W/O CODES
TEST SYSTEM
1) Perform necessary systems and component tests. See I -
SYS/COMP TESTS.
2) Verify that complaint is repaired.
SAFETY PRECAUTIONS
* Always refer to Engine Tune-Up Decal in engine compartment before
performing tune-up. If manual and decal differ, always use decal
specifications.
* DO NOT allow or create a condition of misfire in more than one
cylinder for an extended period of time. Damage to converter may
occur due to loading converter with unburned air/fuel mixture.
* Always turn ignition off and disconnect negative battery cable
BEFORE disconnecting or connecting computer or other electrical
components.
* DO NOT drop or shock electrical components such as computer,
airflow meter, etc.
* DO NOT use fuel system cleaning compounds that are not
recommended by the manufacturer. Damage to gaskets, diaphragm
materials and catalytic converter may result.
* Before performing a compression test or cranking engine using a
remote starter switch, disconnect coil wire from distributor and
secure it to a good engine ground, or disable ignition.
* Before disconnecting any fuel system component, ensure fuel
system pressure is released.
* Use a shop towel to absorb any spilled fuel to prevent fire.
* DO NOT create sparks or have an open flame near battery.
* If any EFI components such as hoses or clamps are replaces,
ensure they are replaced with components designed for EFI use.
* Always reassemble throttle body components with new gaskets, "O"
rings and seals.
* If equipped with an inertia switch, DO NOT reset switch until
fuel system has been inspected for leaks.
* Wear safety goggles when drilling or grinding.
* Wear proper clothing which protects against chemicals and other
hazards.
END OF ARTICLE

E - THEORY/OPERATION - DIGIFANT
Article Text (p. 8)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:43PMFig. 4: Identifying Evaporative Emissions System Components
Courtesy of Volkswagen United States, Inc.
SELF-DIAGNOSTIC SYSTEM
O2 SENSOR WARNING LIGHT
All vehicles are equipped with an O2 sensor warning light
located on the instrument panel. The light will illuminate when a
mileage counter reaches 60,000 miles (on Vanagon 90,000 miles)
indicating recommended O2 sensor replacement and mileage counter
reset.
CHECK ENGINE LIGHT (CALIF MODELS)
Some California vehicles are equipped with a CHECK engine
light and rocker switch on the instrument panel. The light will
illuminate when the ignition switch is turned to the ON position (for
bulb check) and when engine management systems are malfunctioning
during normal operation with the engine running. For additional
information see appropriate SELF-DIAGNOSTICS article.
MISCELLANEOUS CONTROLS
NOTE: Although not considered true Engine Performance related
systems, some controlled devices may affect driveability if
they malfunction.

EMISSION CONTROL VISUAL INSPECTION PROCEDURES
Article Text (p. 14)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:44PMFig. 15: Typical Vacuum-Actuated EFE System
Courtesy of General Motors Corp.
EMISSION MAINTENANCE REMINDER LIGHT (EMR) (IF EQUIPPED)
If equipped, the EMR light (some models may use a reminder
flag) reminds vehicle operator that an emission system maintenance is
required. This indicator is activated after a predetermined
time/mileage.
When performing a smog check inspection, ensure EMR
indicator is not activated. On models using an EMR light, light should
glow when ignition switch is turned to ON position and should turn off
when engine is running.
If an EMR flag is present or an EMR light stays on with
engine running, fail vehicle and service or replace applicable
emission-related components. To reset an EMR indicator, refer to
appropriate MAINTENANCE REMINDER LIGHTS in the MAINTENANCE section.
MALFUNCTION INDICATOR LIGHT (MIL)
The Malfunction Indicator Light (MIL) is used to alert
vehicle operator that the computerized engine control system has
detected a malfunction (when it stays on all the time with engine
running). On some models, the MIL may also be used to display trouble
codes.
As a bulb and system check, malfunction indicator light will
glow when ignition switch is turned to ON position and engine is not
running. When engine is started, light should go out.

MAINTENANCE REMINDER LIGHT RESET PROCEDURES
Article Text
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:48PM
ARTICLE BEGINNING
1983-96 MAINTENANCE
Volkswagen Maintenance Reminder Light Reset Procedures
EGR MAINTENANCE LIGHT (IF EQUIPPED)
EGR light comes on at 15,000 mile intervals to indicate EGR
servicing is required. After checking EGR system, reset mileage
counter. See RESETTING MILEAGE COUNTER.
OXYGEN SENSOR WARNING LIGHT (IF EQUIPPED)
Oxygen sensor (OXS) light comes on at 30,000 mile intervals
to indicate oxygen sensor replacement. After installing new sensor,
reset mileage counter. See RESETTING MILEAGE COUNTER.
RESETTING MILEAGE COUNTER (IF EQUIPPED)
1) On some Rabbit and Pickup models, remove instrument panel
cover plate. Reach into opening at top left corner of speedometer and
pull release arm to reset counter. See Fig. 1. Left arm resets EGR
counter, right arm resets oxygen sensor.
2) On Vanagon models, locate mileage counter under spare tire
or under driver's floorboard (in-line with speedometer cable). Using a
pointed instrument, depress reset button. Ensure light is out.
3) On all other models, locate mileage counter (in-line with
speedometer cable) and push White reset button. See Fig. 1. Ensure
light is out.Fig. 1: Resetting Mileage Counters
Courtesy of Volkswagen United States, Inc.
SERVICE REMINDER INDICATOR (SRI) DISPLAY
CABRIO, GOLF III, GTI, JETTA III (1993-95) JETTA (1996)
1) One of four service codes may be displayed on instrument
cluster according to mileage driven. Each service code displayed
determines type or level of maintenance required. Service code will

MAINTENANCE REMINDER LIGHT RESET PROCEDURES
Article Text (p. 2)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:48PM
flash for approximately 3 seconds in odometer display window as
ignition is turned on. When servicing becomes due (every 7500 miles),
appropriate service code will flash for approximately 60 seconds. The
four service codes available for display are as follows:
* IN 00 (No Service Necessary)
* OEL (Oil Change Service) Every 7500 Miles
* IN 01 (Inspection Service) Every 15,000 Miles
* IN 02 (Additional Servicing Work) Every 30,000 Miles
2) After performing required maintenance, each effected
service code displayed must be reset individually. For example, at 15,
000 miles service codes OEL and IN 01 will both need to be reset.
3) To reset service codes, turn ignition on. Press and hold
odometer reset button located below speedometer. While holding button,
press clock reset button (lower button for digital clock) located to
left of fuel gauge. Release buttons. Programming mode is now
activated. Service code OEL1.S (distance counter) should be displayed.
4) Press clock reset button once more. 7500 miles should now
be indicated on display. Desired mileage for reset may be attained by
pressing clock reset button. Mileage displayed will decrease in
increments of 500 miles each time button is pressed. This feature
should only be used to calibrate mileage when instrument cluster is
replaced. When desired mileage is displayed, press odometer reset
button.
5) Service code OEL2.S (time counter) should be displayed.
Press clock reset button. 6 (months) will be indicated on display.
Time counter for next oil change may be set by pressing clock reset
button if instrument cluster was replaced. When desired time is
displayed, press odometer reset button.
6) Service code IN 01.S (time counter) should be displayed.
Press clock reset button. 12 (months) will be indicated on display.
Time counter for next maintenance interval may be set by pressing
clock reset button if instrument cluster was replaced. When desired
time is displayed, press odometer reset button.
7) Service code IN 02.S (distance counter) should be
displayed. Press clock reset button. 30,000 (miles) will be indicated
on display. Desired mileage for reset may be attained by pressing
clock reset button. Mileage displayed will decrease in increments of
500 miles each time button is pressed. This feature should only be
used to calibrate mileage when instrument cluster is replaced. When
desired mileage is displayed, turn ignition off. Programming is now
stored in memory.
END OF ARTICLE