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Symptom Tests: Notes

WARNING: This page is about a different car, the 2000 Cadillac Catera and 1999 Cadillac Catera. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM INDEX

Symptom Perform Test
Scan Tool Does Not Communicate With TDM 1 
Security Indicator Light Inoperative 2 
Security Indicator Always On Or Flashing 3 
Theft Deterrent System Inoperative 4 
Theft Deterrent Not Armed When Locked From Switch 5 
Theft Deterrent Armed When Unlocked From Switch 6 
NOTE: On immobilizer system and content theft deterrent systems, perform SYSTEM OPERATION CHECK  prior to system diagnosis. See TROUBLE SHOOTING. After making repairs, repeat SYSTEM OPERATION CHECK  to ensure proper system operation.
NOTE: System tests are written specifically for GM Tech 2 scan tool. A generic scan tool may not be capable of performing all necessary test functions.