Passive Anti-Theft System (PATS)

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

Visual Inspection Chart:

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the scan tool does not power up:
^ check that the program card is correctly installed.
^ check the connections to the vehicle.
^ check that the ignition switch is in RUN position.
^ If the scan tool does not power up, refer to the scan tool manual.
5. Carry out the DATA LINK DIAGNOSTICS test. Pinpoint Test PC (Precheck)If the scan tool responds with:
^ CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
^ NO RESP/NOT EQUIP for PCM, refer to Computers and Control Systems.
^ SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the PCM.
6. If the DTCs retrieved are related to the concern, go to the (PCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics. Passive Anti-Theft System (PATS)
7. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. Passive Anti-Theft System (PATS)