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:

Precaution
PRECAUTION 1. HANDLING PRECAUTIONS ON STEERING SYSTEM (a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in driving hazards. 2. HANDLING PRECAUTIONS ON SRS AIRBAG SYSTEM (a) The vehicle is equipped with a SRS (Supplem ...

Steering Angle Sensor Initialization Incomplete (C1439,C1445)
DESCRIPTION The skid control ECU (master cylinder solenoid) acquires steering angle sensor (spiral cable with sensor sub-assembly) zero point every time the ignition switch is turned to ON and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores t ...

Cruise control
Use the cruise control to maintain a set speed without depressing the accelerator pedal. Indicator Cruise control switch ■ Setting the vehicle speed Press the ON-OFF button to activate the cruise control. Cruise control indicator will come on. Press the button again to deactivate ...