Initial Inspection and Diagnostic Overview

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 moulded plastic head, non-PATS key)
^ Use of a non-programmed encoded ignition key

Electrical
^ Fuse:
- Fuse 4 (15 A)
- Fuse 7 (25 A)
- Fuse 8 (15 A)
^ PATS transceiver
^ Connectors
^ Ignition switch

3. If the concern remains after the inspection,connect 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 NGS Tester still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
5. Carry out 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. Test A: No Communication With the Module
^ SYSTEM PASSED, retrieve and record the continuous DTCs, erase the continuous Diagnostic Trouble Codes (DTCs) and carry out self-test diagnostics for the PATS module.
6. If the DTCs retrieved are related to the concern, go to PATS DTC Index to continue diagnostics. PATS Diagnostic Trouble Code (DTC) Index
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures