Symptom Chart

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
The powertrain control module (PCM) does not respond to the scan tool or no high speed controller area network (HS-CAN) communication	Fuse Circuitry PCM Anti-lock brake system (ABS) module Four wheel drive (4WD) control module (if equipped) Instrument cluster	Go to Pinpoint Test A .
The anti-lock brake system (ABS) module does not respond to the scan tool	Fuse Circuitry ABS module	Go to Pinpoint Test B .
The four wheel drive (4WD) control module does not respond to the scan tool	Fuse Circuitry 4WD control module	Go to Pinpoint Test C .
The instrument cluster does not respond to the scan tool	Fuse Circuitry Instrument cluster	Go to Pinpoint Test D .
The smart junction box (SJB) does not respond to the scan tool	Fuse Circuitry SJB	Go to Pinpoint Test E .
The restraints control module (RCM) does not respond to the scan tool	Fuse Circuitry RCM	Go to Pinpoint Test F .
The parking aid module does not respond to the scan tool	Fuse Circuitry Parking aid module	Go to Pinpoint Test G .
No International Standards Organization (ISO) 9141 network communication	Circuitry RCM Parking aid module	Go to Pinpoint Test H .
No medium speed controller area network (MS-CAN) communication, all modules are not responding	Circuitry SJB Instrument cluster	Go to Pinpoint Test I .
No high speed controller area network (HS-CAN) communication, all modules are not responding	Circuitry ABS module 4WD control module (if equipped) Instrument cluster PCM	Go to Pinpoint Test A .
No power to the scan tool	Fuse Circuitry Scan tool	Go to Pinpoint Test J .