Symptom Chart

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the vehicle security module	Circuitry Central junction box (CJB) fuses: 18 (10A) 107 (30A) Circuit or connection in universal asynchronous receiver transmitter (UART)-based protocol (UBP) communication network Vehicle security module	GO to PINPOINT TEST B .