LEMON Manuals
: Even more car manuals for everyone: 1960-2025
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DeVille Base
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Repair and Diagnosis (Single Page)
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Anti-Theft System
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Diagnostic Tests
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DTC B3031: Key Decoder Device In Assembly Learn Mode
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Code Enable Criteria
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Code Enable Criteria
Following conditions must exist for DTC to run:
Ignition switch must be in RUN position.
Theft deterrent control module cannot have DTC B1327 set as current.