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

Toyota Tacoma (2015-2018) Service Manual / Lighting / Lighting System / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Lighting system

DTC Code	Detection Item	See page
B1244	Light Sensor Circuit Malfunction
B124B	Automatic High Beam System
B124C	Automatic High Beam Camera
U023A	Lost Communication With Image Processing Module "A"

Data List / Active Test

DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows values or states of switches, sensors, actuators and other items to be read without removing any parts ...

Automatic High Beam System (B124B)

DESCRIPTION The main body ECU (multiplex network body ECU) determines the status of the automatic high beam system based on the automatic high beam system signal from the forward recognition came ...

Other materials:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE BRAKE ACTUATOR BRACKET NO. 1 (a) Using a hexagon wrench (5 mm), remove the screw and brake actuator bracket No. 1. (b) Using a screwdriver, remove the fluid level warning switch connector. 2. REMOVE BRAKE M ...

Customize Parameters
CUSTOMIZE PARAMETERS 1. CUSTOMIZE FUNCTION WITH TECHSTREAM NOTICE: Be sure to record the current settings before customizing. These buzzers should be ON for safe driving. Perform these procedure only if it is necessary to turn the buzzer OFF (disabled). HINT: The following ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT STEERING PAD (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page ). (b) With the steering pad installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the steering pad ...