Symptom Chart

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

PASSIVE ANTI-THEFT SYSTEM SYMPTOM CHART

Condition	Possible Sources	Action
The anti-theft indicator is never on - no 3-second anti-theft indicator prove-out	Instrument cluster Anti-theft indicator Centrial junction box (CJB) fuse 7 (5A)	GO to PINPOINT TEST A .
The anti-theft system does not operate correctly - the vehicle cranks but anti-theft indicator flashes rapidly at key ON	Incorrect powertrain control module (PCM) calibration PCM Circuitry	GO to PINPOINT TEST B .
The vehicle does not start - the anti-theft indicator does not prove out and flashes rapidly	Standard corporate protocol (SCP) not connected/failure Powertrain control module (PCM) Instrument cluster Passive anti-theft system (PATS) transceiver Unprogrammed key	GO to PINPOINT TEST K .
The vehicle does not start - the anti-theft indicator proves out for 3 seconds as normal, vehicle does not crank	Starter circuit	CARRY OUT the starter diagnostics. REFER to STARTING SYSTEM .
The vehicle does not start - the anti-theft indicator proves out for 3 seconds as normal but the engine does not remain running	Powertrain concern	CARRY OUT powertrain diagnostics. See INTRODUCTION - GASOLINE article .
The vehicle starts and runs for longer than 1 second, then stalls	This is not a passive anti-theft system (PATS) issue. PATS never disables a running engine.	CARRY OUT powertrain diagnostics. See INTRODUCTION - GASOLINE article .