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Home >> Mercury >> 2005 >> Mountaineer 2WD V8-4.6L SOHC VIN W >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Testing and Inspection >> Pinpoint Tests >> Test D: The Anti-Theft System Does Not Operate Correctly - Passive Anti-Theft System (PATS) Key Transponder Signal Is Not Recei

Test D: The Anti-Theft System Does Not Operate Correctly - Passive Anti-Theft System (PATS) Key Transponder Signal Is Not Recei

PINPOINT TEST D: THE ANTI-THEFT SYSTEM DOES NOT OPERATE CORRECTLY - PASSIVE ANTI-THEFT SYSTEM (PATS) KEY TRANSPONDER SIGNAL IS NOT RECEIVED - DAMAGED KEY OR NON-PATS KEY


D1-D2:






D3-D4:






Normal Operation
During each vehicle start sequence, the transceiver module reads the PATS key identification code and sends the data to the powertrain control module (PCM).

Possible Causes
- PATS transceiver
- PCM
- PATS key