LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2003 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 320 (Multiplex Communication System - Diagnostics) >> Circuit Inspection >> DTC B1248/48: AVC-LAN Circuit Communication Stop >> Circuit Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Description

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

This DTC is output when communication stops between gateway ECU and AVC-LAN circuit.

The body ECU performs the diagnosis check of the gateway ECU communication error to "AVC-LAN".

The condition of registration can be checked by DTC of the body ECU.

Fig 1: Identifying DTC B1248/48, Detected Condition & Trouble Area
G01113007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002