Passive Anti-Theft Alarm System (Pats)

NOTE: The PATS module must be reconfigured after replacement. Refer to the PATS Configuration Command Index. For additional reprogramming assistance, refer to the help screen on the New Generation STAR (NGS) Tester configuration card.

1. Verify the customer concern by duplicating the condition.
2. Visually inspect for obvious signs of mechanical and electrical damage.

VISUAL INSPECTION CHART

Mechanical
- Ignition lock cylinder
- Encoded ignition key (PATS key)
- Use of non-encoded ignition key (key without the molded plastic head, non-PATS key)
- Use of a non-programmed encoded ignition key

Electrical
- Fuse:
- Fuse 24 (7.5A)
- Fuse 25 (7.5A)
- Fuse 19 (25A)
- PATS transceiver module
- Connectors
- Ignition switch

3. 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.
4. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
5. Perform the DATA LINK DIAGNOSTIC TEST. If the NGS responds with:
- CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus.
- NO RESP/NOT EQUIP for PATS module, go to Pinpoint Test A.
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and perform self-test diagnostics for the PATS module.
6. If the DTCs retrieved are related to the concern, go to PATS Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Passive Anti-Theft Alarm System (Pats)