Passive Anti-Theft System (PATS) - Symptom Chart

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible	Sources Action
No communication with the powertrain control module (PCM)	Battery junction box (BJB) fuses: 21 (10A) 41 (15A) Circuitry. PCM.	REFER to MODULE COMMUNICATIONS NETWORK to continue communication diagnostics.
The anti-theft indicator is always/never on	Circuitry. Theft LED. Powertrain control module (PCM).	GO to PINPOINT TEST G: THE ANTI-THEFT INDICATOR IS ALWAYS/NEVER ON .
The vehicle does not start	Starter relay. Powertrain control module (PCM). Circuitry. Encoded ignition key. Ignition key code. Ignition key transponder key code. Ignition key transponde key code format.	GO to PINPOINT TEST H: THE VEHICLE DOES NOT START .