Jetta L4-2.0L (AEG) (2000)
Alarm Module: Initial Inspection and Diagnostic Overview
General Information
General Information
Immobilizer functions supported by:
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control electronics integrated with instrument cluster
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a warning light for anti-theft immobilizer -K117- in instrument cluster (speedometer display)
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an adapted engine control module
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an induction coil on the ignition lock
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Adapted ignition keys with electronic components (transponder and response reader memory)
Malfunction Recognition and DTC Display
Malfunction Recognition And Diagnostic Trouble Code (DTC) Display Via Warning Light For Anti-theft Immobilizer -K117-
An intact immobilizer system is indicated by the warning light for anti-theft immobilizer -K117- lighting up and going out after approx. 3 seconds when
the ignition is switched on.
When the ignition is switched "on", the warning lamp flashes or lights up continuously to indicate a malfunction in the system when:
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Adapting the ignition key has been carried out incorrectly
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No transponder (response reader memory) is present in ignition key.
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An unauthorized ignition key is used.
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An unauthorized engine control module is detected.
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A malfunction in the induction coil of anti- theft immobilizer -D2-.
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A malfunction in the data wiring is present.
The warning light for anti-theft immobilizer -K117- does not light up after switching on ignition:
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The immobilizer control module has detected an authorized key.
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The immobilizer control module has not detected an incorrect engine control module.
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The immobilizer control module is currently "adapting keys" and after adapting the keys no malfunction has occurred.
To troubleshoot, perform the On Board Diagnostic (OBD) program and retrieve the stored information with either the VAG 1551/1552 Scan Tool or
VAS 5051 Vehicle Diagnostic, Testing and Information System.