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Home >> Cadillac >> 2009 >> DTS 4.6 9 >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Keyword Data Line >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Battery Positive Voltage 1 1 - -
Ignition Voltage 1 1 - -
Keyword 2000 Serial Data 1 1 1 -
Module Ground - 1 - -
1. Scan tool does not communicate with keyword 2000 device
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