Toyota Tacoma 2015-2018 Service Manual: Diagnosis System

Toyota Tacoma 2015-2018 Service Manual / Multiplex Communication / Lin Communication System / Diagnosis System

DIAGNOSIS SYSTEM

1. DESCRIPTION

The main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) control the LIN communication system. LIN communication system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3).

When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

2. CHECK DLC3

(a) Check the DLC3 (See page 3. INSPECT BATTERY VOLTAGE ).

3. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

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 p ...

Dtc Check / Clear

DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Smart Acces ...

Other materials:

Conversions and Add-Ons
Add-On Electrical Equipment Warning: The Data Link Connector (DLC) is used for vehicle service and Emission Inspection/Maintenance testing. See Malfunction Indicator Lamp (Check Engine Light). A device connected to the DLC - such as an aftermarket fleet or driver-behavior tracking device - may inter ...

Installation
INSTALLATION CAUTION / NOTICE / HINT HINT: Perform "Inspection After Repairs" after replacing the engine assembly, cylinder head sub-assembly, camshaft, No. 2 camshaft, No. 3 camshaft sub-assembly, No. 4 camshaft sub-assembly, camshaft timing gear assembly, camshaft timing exhaust g ...

Installation
INSTALLATION PROCEDURE 1. INSTALL TRANSMISSION WIRE (a) Coat 2 new O-rings with ATF, and install them to the 2 temperature sensors. (b) Coat a new O-ring with ATF, and install it to the transmission wire. (c) Install the transmission wire to the automatic transmission case sub-assembly with t ...