1990 VOLKSWAGEN CORRADO warning light

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

SCHEDULED SERVICES
Article Text (p. 3)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:49PM
restored, driveability problems may exist on some vehicles.
These vehicles may require a relearn procedure. See COMPUTER
RELEARN PROCEDURES article in GENERAL INFORMATION section.
REPLACING BLOWN FUSES
Before replacing a blown fuse, remove ignition key, turn off
all lights and accessories to avoid damaging the electrical system. Be
sure to use fuse with the correct indicated amperage rating. The use
of an incorrect amperage rating fuse may result in a dangerous
electrical system overload.
BRAKE PAD REPLACEMENT
WARNING: Use caution when checking and/or changing brake pads, some
pads may contain asbestos which can irritate eyes and may
cause other health hazards. A water based solution should be
used to clean brake dust from wheel and brake components.
DO NOT use compressed air to blow off brake dust.
BRAKE SYSTEM
CAUTION: If brake warning light comes on while driving it indicates
a low fluid level or failure in one of the braking
circuits. If the brake pedal can be depressed further than
normal it is an indication that one of the brake circuits
is not functioning. Stop vehicle and check brake reservoir
fluid level. If level is below MIN mark, DO NOT drive
vehicle. Have it towed to a repair shop. If level is
between the MIN and MAX marks, proceed cautiously to a
repair shop.
BRAKE PAD WEAR INDICATOR
Indicator will cause a squealing or scraping noise, warning
that brake pads need replacement.
BRAKE PEDAL PRESSURE WITH ENGINE NOT RUNNING
CAUTION: Brake pedal requires extreme pressure to stop the vehicle
when the engine is not running.
CATALYTIC CONVERTER
Continued operation of vehicle with a severe malfunction
could cause converter to overheat, resulting in possible damage to
converter and vehicle.
Any modification to the exhaust system on turbo models, which
reduces exhaust backpressure, will lead to lean fuel mixtures and
excessive spark advance. This could cause serious engine damage.
COOLANT (PROPYLENE-GLYCOL FORMULATIONS)

SERVICE INDICATOR & WARNING LIGHTS
Article Text
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:51PM
ARTICLE BEGINNING
1983-91 MAINTENANCE
Volkswagen Service Indicator & Warning Lights
Scirocco, Corrado
SERVICE INDICATOR & WARNING LIGHTSFig. 1: Dash Gauges & Warning Lights
Courtesy of Volkswagen United States, Inc.
The warning lights come on for a function test when the
ignition is switched on, and should go out once the engine has

SERVICE INDICATOR & WARNING LIGHTS
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 09:51PM
started.
"BRAKE" INDICATOR LIGHT
Indicates the brake fluid level is low in the reservoir or
the parking brake is still on.
HIGH BEAM INDICATOR LIGHT
Light indicates that the head light high beam is on.
TURN SIGNAL INDICATOR LIGHTS
Indicate signal operation and direction.
SEAT BELT WARNING LIGHT
The warning light stays on until the driver's seat belt is
fastened.
ALTERNATOR WARNING LIGHT
Light comes on if alternator is not charging.
REAR WINDOW DEFOGGER INDICATOR
Indicates the rear defogger is on.
FOG LIGHTS INDICATOR
Indicates the fog lights are on.
EMERGENCY FLASHER INDICATOR
Indicates the emergency flashers are in operation.
"ECS" MALFUNCTION WARNING (IF EQUIPPED)
Warns of a malfunction in the emission control system.
OIL PRESSURE WARNING LIGHT
Indicates no, or low, oil pressure.
COOLANT TEMPERATURE & LEVEL WARNING (IF EQUIPPED)
Warns of excessive engine coolant temperature or low coolant
level in system.
"ABS" WARNING LIGHT
Warns of a malfunction in the anti-lock brake system.

SERVICE INDICATOR & WARNING LIGHTS
Article Text (p. 3)
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:51PM
"OXS" OXYGEN SENSOR LIGHT
Indicates service due on emission control system.
END OF ARTICLE

STARTER - BOSCH
Article Text
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:51PM
ARTICLE BEGINNING
1990-92 ELECTRICAL
Starters - Bosch
1990-92 Passat
1991-92 Cabriolet, Corrado, Fox, Golf GL, GTI, Jetta, Vanagon
DESCRIPTION
Starter is a brush type, series-wound electric motor with an
overrunning clutch. Field frame is enclosed by commutator end frame
and drive bushing and carries pole shoes and field coils. A splined
armature shaft drive end carries drive assembly.
TROUBLE SHOOTING
CHARGING SYSTEM TROUBLE SHOOTING TABLEÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄPROBLEM
Possible Cause Action
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄNO START CONDITION
Dead Battery ............................ Check/Replace Battery
Bad Cable Connections .................... Clean/Replace Cables
Ignition Switch/Circuit Fault ............ Check Switch/Circuit
CHARGING SYSTEM WARNING LIGHT STAYS ON
Loose/Worn Alternator Belt ............... Tighten/Replace Belt
Loose Alternator Connections ......... Check/Repair Connections
Warning Light Wiring ...................... Check/Repair Wiring
Faulty Stator/Diodes ................... Test/Repair Alternator
Faulty Voltage Regulator ................ Test/Repair Regulator
WARNING LIGHT OFF WITH IGNITION SWITCH ON
Blown Fuse ................................. Check/Replace Fuse
Faulty Alternator ............................. Test Alternator
Bad Warning Light Bulb ...................... Test/Replace Bulb
WARNING LIGHT ON WITH IGNITION SWITCH OFF
Alternator Wiring Short ................... Check/Repair Wiring
Faulty Rectifier Bridge ................ Test/Repair Alternator
AMMETER INDICATES DISCHARGE
Loose/Worn Alternator Belt ............... Tighten/Replace Belt
Loose Alternator Connections ......... Check/Repair Connections

STEERING COLUMN SWITCHES
Article Text
1990 Volkswagen Corrado
For Volkswagen Technical Site: http://vw.belcom.ru
Copyright © 1998 Mitchell Repair Information Company, LLC
Thursday, March 23, 2000 09:51PM
ARTICLE BEGINNING
1989-92 SAFETY EQUIPMENT
Steering Column Switches
Cabriolet, Corrado, Fox,
Golf, GTI, Jetta, Passat
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all WARNINGS and SERVICE PRECAUTIONS.
NOTE: For information on air bag DIAGNOSIS & TESTING or DISPOSAL
PROCEDURES, see the AIR BAGS article.
SERVICE PRECAUTIONS
Observe these precautions when working with air bag systems:
* DO NOT use computer memory saver tool. Using computer
memory tool will keep air bag system active and may
cause accidental deployment of air bag unit.
* Disable air bag system before servicing any air bag
system or steering column component. See DISABLING &
ACTIVATING AIR BAG SYSTEM.
* Because of critical operating requirements of system,
DO NOT attempt to service any air bag system component.
* Air bag parts should not be left unattended. They
should be installed in vehicle immediately after
obtaining them.
* Air bag components which have been dropped more than 18
inches should not be used.
* Chemical cleaners, oil and grease should not contact
vinyl covering on air bag unit.
* DO NOT place stickers or covers on steering wheel.
* Always disable air bag system before performing
electric welding on vehicle.
* Air bag system can only be tested using Diagnostic
Tester (VAG 1551) and Multimeter (US 1119). Never use
test light on air bag system.
* DO NOT expose air bag unit to temperatures greater than
194øF (90øC).
SYSTEM OPERATION CHECK
Two lights pertaining to air bag system are located directly
above air bag symbol in instrument cluster. See Fig. 1.
Control light is used to indicate readiness of system. This
light, which glows when ignition switch is turned to ON position or
engine is started, will stay on approximately 5-8 seconds while
diagnosis unit in air bag control unit performs an electronic test
cycle of system.

STEERING COLUMN SWITCHES
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 09:51PM
If control light does not glow when ignition is turned to ON
position or does not go out after 5-8 seconds, a fault probably exists
in system. If a fault occurs while ignition is on, it is stored in
fault memory. Warning light will then glow and air bag system will be
switched off. If warning light glows or flickers while driving, air
bag system should be tested. See AIR BAG article in the
ACCESSORIES/SAFETY EQUIPMENT Section.Fig. 1: Locating Air Bag Warning & Control Lights
Courtesy of Volkswagen United States, Inc.
DISABLING & ACTIVATING AIR BAG SYSTEM
WARNING: Wait about 20 minutes after deactivating air bag system
before servicing. Air bag system voltage is maintained for
about 20 minutes after system is deactivated. Servicing
system before 20 minutes may cause accidental air bag
deployment and possible personal injury.
To disable air bag system, disconnect negative battery cable
and wait 20 minutes before working on vehicle. To activate system,
reconnect negative battery cable. Perform a system operational check
to ensure proper system operation. See SYSTEM OPERATION CHECK.
ADJUSTMENTS
AIR BAG SPIRAL SPRING
To center spiral spring assembly, turn spring assembly 4
turns from stop in either direction.
AIR BAG UNIT REMOVAL & INSTALLATION
WARNING: On Cabriolet equipped with a driver-side air bag, use
extreme caution while servicing steering column. Failure to