Symptom Chart

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
The 4-wheel drive (4WD) control module does not respond to the diagnostic tool	Circuit or connection in the 9141 international standards organization (ISO) communications network 4WD control module	GO to PINPOINT TEST A .
The anti-lock brake system (ABS) module does not respond to the diagnostic tool	Circuit or connection in the controller area network (CAN) ABS module	GO to PINPOINT TEST B .
The electronic automatic temperature control (EATC) module does not respond to the diagnostic tool	Circuit or connection in the universal asynchronous receiver-transmitter (UART) based protocol (UBP) communications network EATC module	GO to PINPOINT TEST C .
The instrument cluster does not respond to the diagnostic tool	Circuit or connection in the controller are network (CAN) Instrument cluster	GO to PINPOINT TEST H .
The parking aid module does not respond to the diagnostic tool	Circuit or connection in the international standards organization (ISO) 9141 communications network Parking aid module	GO to PINPOINT TEST D .
The powertrain control module (PCM) does not respond to the diagnostic tool - gas and diesel	Circuit or connection in the controller area network (CAN) PCM	GO to PINPOINT TEST H .
The restraint control module (RCM) does not respond to the diagnostic tool	Circuit or connection in the international standards organization (ISO) 9141 communications network RCM	GO to PINPOINT TEST E .
The trailer brake controller does not respond to the diagnostic tool	Circuit or connection in controller area network (CAN) Trailer brake controller	GO to PINPOINT TEST F .
The vehicle security module does not respond to the diagnostic tool	Circuit or connection in the universal asynchronous receiver-transmitter (UART) based protocol (UBP) communications network Vehicle security module	GO to PINPOINT TEST G .
No controller area network (CAN) communication	Circuit or connection in the CAN CAN modules	GO to PINPOINT TEST H .
No international standards organization (ISO) 9141 communications network communication	Circuit or connection in the ISO 9141 communications network ISO 9141 communications network modules	GO to PINPOINT TEST I .
No universal asynchronous receiver-transmitter (UART) based protocol (UBP) communications network communication	Circuit or connection in the UBP communications network UBP communications network modules	GO to PINPOINT TEST J .
No module/network communication - no power to the diagnostic tool	Data link connector (DLC) Central junction box (CJB) fuse 12 (20A) Circuitry Diagnostic tool	GO to PINPOINT TEST K .