Passive Anti-Theft Alarm System (Pats)

1. Verify the customer's concern by duplicating the condition.
2. Inspect to determine if one of the 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 encoded ignition key.

Electrical
- Open fuses: Central Junction Box (CJB): Fuse 23 (5 A), Fuse 10 (20 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 New Generation STAR (NGS) Tester to the Data Link Connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the NGS menu. If the NGS does not communicate with the vehicle:
- check that the program card is properly installed.
- check the connections to the vehicle.
- check the ignition switch position.
5. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
6. Perform the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network.
- NO RESP/NOT EQUIP for PATS module, go to Pinpoint Test A. A: No Communication With Passive Anti-Theft System Module
- SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the PATS module.
7. If the DTCs retrieved are related to the concern, go to PATS Diagnostic Trouble Code (DTC) Index to continue diagnostics. PATS Diagnostic Trouble Code (DTC) Index
8. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Passive Anti-Theft Alarm System (Pats)

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