Toyota Tacoma (2015-2018) Service Manual: Diagnostic Trouble Code Chart

Toyota Tacoma (2015-2018) Service Manual / Multiplex Communication / Lin Communication System / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Main Body ECU (Multiplex Network Body ECU)

DTC Code	Detection Item	See page
B1206	P/W Master Switch Communication Stop
B1273	Sliding Roof ECU Communication Stop
B2321	Driver Side Door ECU Communication Stop
B2322	Front Passenger Side Door ECU Communication Stop
B2325	LIN Communication Bus Malfunction

Certification ECU (Smart Key ECU Assembly)

DTC Code	Detection Item	See page
B2785	Communication Malfunction between ECUs Connected by LIN
B2786	No Response from Steering Lock ECU
B278C	Lost Communication with Power Source Control

No Response from Steering Lock ECU (B2786)

DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator or upper bracket assembly) stops for 10 ...

Sliding Roof ECU Communication Stop (B1273)

DESCRIPTION This DTC is stored when LIN communication between the sliding roof ECU (sliding roof drive gear sub-assembly) and main body ECU (multiplex network body ECU) stops for 10 seconds or mo ...

Other materials:

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each sy ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION BLOCK (a) Remove the main body ECU (multiplex network body ECU) from the driver side junction block (See page ). (b) Disconnect the 1D driver side junction block connector. (c) Measure the voltag ...