Inspection and Verification Note

NOTE: The PATS module must always be reconfigured after replacement.

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

Mechanical
- Ignition lock cylinder
- Encoded ignition key (PATS key)
- Use of a non-programmed encoded ignition key

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

3. If the concern remains after the inspection, connect the 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 Tester does not communicate with the vehicle:
- Check that the program card version 6.0 or later is properly installed.
- Check the connections to the vehicle.
- Check the ignition switch position.

If the NGS Tester still does not communicate with the vehicle, refer to the Symptom Troubleshooting Chart.

4. If the NGS responds with:
- NO RESP/NOT EQUIP for PATS module. PINPOINT TEST 1: NO COMMUNICATION WITH THE MODULE.
- SYSTEM PASSED. Retrieve and record all PATS Continuous DTCs, clear the Continuous DTCs and perform the PATS module On Demand Self-Test.

5. If the DTCs retrieved are related to the concern, go to the PATS Diagnostic Trouble Code (DTC) Index to continue diagnostics.
6. If no DTCs related to the concern are retrieved, refer to the Symptom Troubleshooting Chart to continue diagnostics.