What was found
AUTO THROTTLES WILL NOT ENGAGE. ACFT GROUNDED. CONFIRMED FAULT, A/T FAILS BITE TEST. BOTH DFCS & A/T FAULT HISTORY PAGE SHOWS NUMEROUS FAULT MESSAGES 22-31502 ASM-2 & 22-31263 CH-A ARM A/T . ACCOMPLISHED GVI INSPECTION OF A/T DC-1 C/B AT P18-1 (E1). WIRING AT C/B IS SECURE, BUT FOUND A/T DC-1 C/B WIRING (6 INCH) GOING TO THE SYSTEM-A FCC DC C/B AT P18-1 (D2) IS BARELY ATTACHED. SECURED WIRING IAW W/D 22-31-31-4. ACCOMPLISHED A/T BITE TEST & INTERACTIVE THROTTLE SERVO MOTOR TEST IAW AMM 22-31-00 & AMM 22-31-91, OPS CHECKED NORMAL.