Symptom Chart

WARNING: This page is about a different car, the 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
The 4-wheel Anti-Lock Brake (4WABS) Control Module Does Not Respond To The Diagnostic Tool	Circuit Or Connection In International Standards Organization (ISO) 9141 Network. 4WABS Control Module (If Equipped).	GO to PINPOINT TEST A: THE 4-WHEEL ANTI-LOCK BRAKE (4WABS) CONTROL MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
The Generic Electronic Module (GEM) Does Not Respond To The Diagnostic Tool	Circuit Or Connection In ISO 9141 Network GEM	GO To PINPOINT TEST B: THE GENERIC ELECTRONIC MODULE (GEM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
The Restraints Control Module (RCM) Does Not Respond To The Diagnostic Tool	Circuit Or Connection In ISO 9141 Network RCM	GO To PINPOINT TEST C: THE RESTRAINT CONTROL MODULE (RCM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
The Central Security Module Does Not Respond To The Diagnostic Tool	Circuit Or Connection In ISO 9141 Network Central Security Module (If Equipped)	GO To PINPOINT TEST D: THE CENTRAL SECURITY MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
The Powertrain Control Module (PCM) Does Not Respond To The Diagnostic Tool	Circuit Or Connection In Standard Corporate Protocol (SCP) Network PCM	GO To PINPOINT TEST E: THE POWERTRAIN CONTROL MODULE (PCM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
The Four Wheel Drive (4WD) Control Module Does Not Respond To The Diagnostic Tool	Circuit Or Connection In SCP Network 4WD Control Module (If Equipped)	GO To PINPOINT TEST F: THE FOUR WHEEL DRIVE (4WD) CONTROL MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL .
No ISO 9141 Network Module/Network Communication	Circuit Or Connection In ISO 9141 Network ISO 9141 networked modules	GO To PINPOINT TEST G: NO MODULE / NETWORK COMMUNICATION - ISO 9141 NETWORK .
No SCP Module/Network Communication	Circuit Or Connection In SCP Network SCP Networked Modules	GO To PINPOINT TEST H: NO MODULE / NETWORK COMMUNICATION - SCP LINK .
No Module/Network Communication - No Power To The Diagnostic Tool	DLC Central Junction Box (CJB) Fuse 17 (20 A) Circuitry Diagnostic Tool	GO To PINPOINT TEST I: NO MODULE / NETWORK COMMUNICATION - NO POWER TO THE DIAGNOSTIC TOOL .