Passive Anti-Theft Alarm System (Pats)

1. Verify the customer's concern by duplicating the condition.
2. Inspect to determine if one of the following mechanical or electrical concerns apply:

VISUAL INSPECTION CHART

Mechanical
^ Damaged ignition lock cylinder.
^ Damaged encoded ignition key.
^ A non-encoded ignition key being used.
^ A non-programmed Max encoded ignition key.

Electrical
^ Open fuses: Fuse junction panel: Fuse 23 (5 A), Fuse 10 (20 A).
^ Open maxi fuses: Power distribution box: Fuse 1 (40 A), Maxi Fuse 3 (40 A).
^ Fuse 18 (15 A).
^ Loose connections.
^ Corroded connections.
^ Damaged ignition switch.
^ Damaged transceiver.

3. If inspection reveals an obvious concern that is readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after the inspection, connect the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to the Data Link Connector (DLC) located beneath the instrument panel to perform the Data Link Diagnostics Test. If the NGS responds with NO RESPONSE/NOT EQUIPPED for a Passive Anti-Theft System (PATS) Control Module, GO to Pinpoint Test A. If the Data Link Diagnostic test is passed for the PATS Control Module, retrieve continuous Diagnostic Trouble Code (DTCs) and execute self test diagnostics for the PATS module. A: No Communication With Passive Anti-Theft System Module
5. If self test is passed and no DTCs are retrieved, GO to the Symptom Chart. Passive Anti-Theft Alarm System (Pats)
6. If DTCs are retrieved, GO to the PATS Module DTC Index. PATS Diagnostic Trouble Code (DTC) Index
7. If the PATS Control Module cannot be accessed by the NGS tester, GO to Pinpoint Test A. A: No Communication With Passive Anti-Theft System Module

Rotunda Service Bay Diagnostic System (SBDS(R)) 001-00001 may also be used to diagnose this system.