Passive Anti-Theft System (PATS) - Inspection and Verification
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION CHART
Mechanical Electrical - Large metallic objects, electronic devices on the key chain that can be used to purchase gasoline or similar items, or a second ignition key on the same key ring as the passive anti-theft system (PATS) ignition key
- Ignition lock cylinder
- PATS key
- Use of a non-PATS key
- More than one PATS key on the same key ring
- Smart junction box (SJB) fuse(s)
- 4 (10A)
- 5 (2A)
- Controller area network (CAN)
- PATS transceiver
- Ignition switch
- Instrument cluster
- Powertrain control module (PCM)
- Transaxle control module (TCM)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- CAN circuits fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
- No response/not equipped for TCM, refer to MODULE COMMUNICATIONS NETWORK .
- No response/not equipped for PCM, refer to MODULE COMMUNICATIONS NETWORK .
- No response/not equipped for instrument cluster, refer to INSTRUMENT CLUSTER .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the PCM and the TCM.
- If the DTCs retrieved are related to the concern, go to the PASSIVE ANTI-THEFT SYSTEM (PATS) - DIAGNOSTIC TROUBLE CODES (DTC) INDEX .
- If no DTCs related to the concern are retrieved, GO to the PASSIVE ANTI-THEFT SYSTEM (PATS) - SYMPTOM CHART .