Symptom Chart

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. 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 PCM	Fuse Wiring, terminals or connectors PCM	REFER to MODULE COMMUNICATIONS NETWORK article.
The anti-theft indicator is always/never on	Fuse Wiring, terminals or connectors Theft indicator PCM	Go to Pinpoint Test F .
The vehicle does not start	Wiring, terminals or connectors Starter relay PCM	CYCLE the ignition. CARRY OUT the PCM self-test. If PATS DTCs are present, go to DTC Charts . If no PATS DTCs are present, REFER to the Introduction - Gasoline Engines article.