Symptom Chart

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. 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).	Fuses Circuitry PCM	REFER to MODULE COMMUNICATIONS NETWORK article.
The anti-theft indicator is always/never on - vehicle starts normally	Fuse Circuitry Anti-theft indicator (part of the light sensor) Powertrain control module (PCM)	Go to Pinpoint Test F .
The vehicle does not start	Circuitry Starter relay PCM	CYCLE the ignition. CARRY OUT the PCM self-test. If PATS DTCs are present, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index in this article. If no PATS DTCs are present, REFER to the Content Not Found article.