Symptom Chart

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. 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	Fuse Wiring, terminals or connectors PCM ABS module 4X4 control module (if equipped) Instrument cluster (IC) Occupant classification system module (OCSM) Power steering control module (PSCM) Restraints control module (RCM) Traction battery control module (TBCM) (Hybrid only) Transmission control module (TCM) (Hybrid only)	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 4X4 control module does not respond to the scan tool	Fuse Wiring, terminals or connectors 4X4 control module	Go to Pinpoint Test C .
The instrument cluster (IC) does not respond to the scan tool	Fuse Wiring, terminals or connectors IC	Go to Pinpoint Test D .
The restraints control module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors RCM	Go to Pinpoint Test E .
The occupant classification system module (OCSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors OCSM	Go to Pinpoint Test F .
The power steering control module (PSCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors PSCM	Go to Pinpoint Test G .
The transmission control module (TCM) does not respond to the scan tool (Hybrid only)	Fuse Wiring, terminals or connectors TCM	Go to Pinpoint Test H .
The traction battery control module (TBCM) does not respond to the scan tool (Hybrid only)	Fuse Wiring, terminals or connectors TBCM	Go to Pinpoint Test I .
The smart junction box (SJB) does not respond to the scan tool	Fuse Wiring, terminals or connectors SJB	Go to Pinpoint Test J .
The audio control module (ACM) does not respond to the scan tool	Fuse Wiring, terminals or connectors ACM	Go to Pinpoint Test K .
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 L .
The satellite digital audio receiver system (SDARS) module does not respond to the scan tool	Fuse Wiring, terminals or connectors SDARS module	Go to Pinpoint Test M
The front display interface module (FDIM) does not respond to the scan tool	Fuse Wiring, terminals or connectors FDIM	Go to Pinpoint Test N .
The front controls interface module (FCIM) does not respond to the scan tool	Fuse Wiring, terminals or connectors FCIM	Go to Pinpoint Test O .
The parking aid module (PAM) does not respond to the scan tool or no International Standards Organization (ISO) 9141 network communication	Fuse Wiring, terminals or connectors PAM	Go to Pinpoint Test P .
No medium speed controller area network (MS-CAN) communication, all modules are not responding	Wiring, terminals or connectors ACM HVAC module FCIM FDIM IC SDARS module SJB	Go to Pinpoint Test Q .
No high speed controller area network (HS-CAN) communication, all modules are not responding	Wiring, terminals or connectors ABS module 4X4 control module (if equipped) IC OCSM PCM PSCM RCM TBCM (Hybrid only) TCM (Hybrid only)	Go to Pinpoint Test A .
No power to the scan tool	Fuse Wiring, terminals or connectors Scan tool	Go to Pinpoint Test R .