LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2003 >> Excursion 7.3 F, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1765 (Auxiliary Brake System) >> Diagnostic Tests >> Auxiliary Brake System - Trailer Brake Control (TBC) Module >> Pinpoint Tests >> Pinpoint Test A: DTC B1863 - TBC Ground Open Circuit >> Normal Operation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Normal Operation

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The TBC module receives fused battery power from central junction box (CJB) fuses 101 (30A) and 28 (10A) along circuits 50 (RD) and 298 (VT/OG), respectively. The ground path for the TBC is along circuit 206 (WH).

Possible Causes

scientia non olet · About LEMON Manuals