Volkswagen Corrado (1993 year). Manual - part 106

ANTI-THEFT SYSTEM 

         1993 ACCESSORIES & EQUIPMENT
         Volkswagen Anti-Theft

         Volkswagen;  Corrado SLC, Passat

         DESCRIPTION & OPERATION

         The anti-theft system monitors the radio, all doors, hood and
trunk lid position. When the anti-theft system is activated, The horn
and emergency flashers will be activated and the vehicle will not
start. The windows and sun roof (if equipped) are not monitored.
         The anti-theft system has self-diagnostic capabilities that
monitor all components and wiring harness. If the system is
functioning correctly, the horn will sound briefly after front door is
locked with the key.

ANTI-THEFT CONTROL MODULE LOCATION TABLE

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Model                                               Location

Corrado SLC  ......................  Behind Right Kick Panel
Passat  ......................  Driver Side Fuse/Relay Panel

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         TROUBLE SHOOTING

         SYSTEM DOES NOT OPERATE

NOTE:    Ensure battery is fully charged and all fuses are okay.

         1) Ground Circuit Check
         Obtain radio security code. Disconnect battery cable
terminals. Disconnect anti-theft control module 6-pin and 10-pin
wiring harness connector. See ANTI-THEFT CONTROL MODULE LOCATION
table. Connect ohmmeter negative lead to ground. Connect positive lead
to anti-theft control module 10-pin wiring harness connector terminal
No. "3" (Brown wire). If continuity is present, go to next step. If
continuity is not present, repair open circuit.
         2) Power Circuit Check
         Connect battery cable terminals. Connect voltmeter negative
lead to ground. Connect positive lead to anti-theft control module 6-
pin wiring harness connector terminal No. "3" (Red wire). Switch
positive lead to anti-theft control module 10-pin wiring harness
connector terminal No. "1" (Red wire). If 12 volts are present at both
terminals, go to next step. If 12 volts are not present, repair open
circuit.
         3) Turn ignition on. Leave voltmeter negative lead connected
to ground. Connect positive lead to anti-theft control module 10-pin
wiring harness connector terminal No. "4" (Black wire for Corrado;

ANTI-THEFT SYSTEM 

         ALARM SYSTEM WILL NOT SWITCH OFF

         1) Ground Circuit Check
         Ensure battery is fully charged. Obtain radio security code.
Disconnect battery cable terminals. Disconnect anti-theft control
module 6-pin and 10-pin wiring harness connector. See ANTI-THEFT
CONTROL MODULE LOCATION table. Reconnect battery cable terminals.
         2) Connect voltmeter negative lead to ground. Connect

ANTI-THEFT SYSTEM 

         ALARM HORN INOPERATIVE

         1) Alarm Horn Check
         Ensure battery is fully charged. Obtain radio security code.
Disconnect battery cable terminals. Disconnect anti-theft control
module 6-pin and 10-pin wiring harness connector. See ANTI-THEFT
CONTROL MODULE LOCATION table.
         2) Connect ohmmeter negative lead to ground. Connect positive
lead to anti-theft control module 6-pin wiring harness connector
terminal No. "4" (Black/Yellow wire). If continuity is present,
replace anti-theft control module. If continuity is not present, check
for open circuit and repair as necessary. If circuit is okay, replace
alarm horn.

         LIGHTS DO NOT FLASH

         1) Alarm Horn Check
         Ensure battery is fully charged and emergency flasher system
is functional. Obtain radio security code. Disconnect battery cable
terminals. Disconnect anti-theft control module 6-pin and 10-pin
wiring harness connector. See ANTI-THEFT CONTROL MODULE LOCATION
table.
         2) Connect voltmeter negative lead to ground. Connect
positive lead to anti-theft control module 6-pin wiring harness
connector terminal No. "1" (Black/White wire for Corrado SLC; Black
Yellow wire for Passat). Turn emergency flashers on. When lights flash
on, battery voltage should be present.
         3) Remove voltmeter positive from terminal No. "1" and
connect to terminal No. "2" (Black/Green wire for Corrado SLC;
Green/Black wire for Passat). Turn emergency flashers on. When lights
flash on, battery voltage should be present. If voltage is correct,
replace anti-theft control module. If voltage is not correct, repair
open circuit in wiring harness between anti-theft control module and
lights.

         ENGINE DOES NOT CRANK WITH ALARM SYSTEM OFF

ANTI-THEFT SYSTEM 

         WIRING DIAGRAMS

         For wiring see WIRING DIAGRAMS article.

END OF ARTICLE