Tacoma

Toyota Tacoma 2015-2018 CAN Workshop Manual

Last Modified: 11-13-2015 6.6 D Doc ID: RM000004TIP022X
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: SYSTEM DESCRIPTION; 2016 MY Tacoma
[08/2015 - ]
SYSTEM DESCRIPTION
1. BRIEF DESCRIPTION
(a) The Controller Area Network (CAN) is a serial data communication system for real time application. It is a
vehicle multiplex communication system which has a high communication speed and the ability to detect
malfunctions.
(b) Using the CANH and CANL bus lines as a pair, CAN communication is performed using a voltage
differential. (A base voltage is applied to the pair of lines and a voltage differential is created when
communicating.)
(c) Many ECUs or sensors installed on the vehicle operate by sharing information and communicating with
each other.
(d) The CAN has two resistors of 120 Ω which are necessary to enable communication.
2. DEFINITION OF TERMS
(a) Main bus
(1) The main bus is a wire harness between the two terminating resistors on the bus. This is the main bus
in the CAN communication system.
(b) Branch
(1) A branch is a wire harness which diverges from the main bus to an ECU or sensor.
(c) Terminating resistors
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