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
The PCM does not respond to the scan tool, or no high speed controller area network (HS-CAN) communication	Fuse Wiring, terminals or connectors PCM ABS module Vehicle dynamics module (VDM) Fire suppression system module (FSSM) (if equipped) Instrument cluster (IC)	Go to Pinpoint Test A .
The ABS module does not respond to the scan tool	Fuse Wiring, terminals or connectors ABS module	Go to Pinpoint Test B .
The instrument cluster (IC) does not respond to the scan tool	Fuse Wiring, terminals or connectors IC	Go to Pinpoint Test C .
The lighting control module (LCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors LCM	Go to Pinpoint Test D .
The heating ventilation air conditioning (HVAC) module does not respond to the scan tool	Fuse Wiring, terminals or connectors HVAC module	Go to Pinpoint Test E .
The vehicle dynamics module (VDM) does not respond to the scan tool	Fuse Wiring, terminals or connectors VDM	Go to Pinpoint Test F .
The driver door module (DDM) does not respond to the scan tool	Fuse Wiring, terminals or connectors DDM	Go to Pinpoint Test G .
The overhead console message center (MC) does not respond to the scan tool	Fuse Wiring, terminals or connectors MC	Go to Pinpoint Test H .
Intermittent no high speed controller area network (HS-CAN) communication, one or more modules are not responding during network test	Wiring, terminals or connectors	Go to Pinpoint Test I .
No high speed controller area network (HS-CAN) communication, all modules are not responding	Fuse Wiring, terminals or connectors PCM ABS module VDM FSSM (if equipped) IC	Go to Pinpoint Test A .
The fire suppression system module (FSSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors FSSM	Go to Pinpoint Test J .
The restraints control module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors RCM	Go to Pinpoint Test K .
No International Standards Organization (ISO) 9141 network communication, all modules are not responding	Wiring, terminals or connectors RCM FSSM (if equipped)	Go to Pinpoint Test L .
No standard corporate protocol (SCP) network communication, all modules are not responding	Wiring, terminals or connectors HVAC module LCM DDM MC IC	Go to Pinpoint Test M .
No power to the scan tool	Fuse Wiring, terminals or connectors Scan tool	Go to Pinpoint Test N .