Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: System Diagram

SYSTEM DIAGRAM

Circuit Description

Component

Outline

Steering Lock ECU (Steering Lock Actuator or UPR Bracket Assembly)

  • The steering is locked and unlocked by communicating with the certification ECU (smart key ECU assembly) via LIN communication.
  • When the following conditions are met, the steering can be unlocked.
    • The codes (L codes) of the certification ECU (smart key ECU assembly) and steering lock match.
    • The certification ECU (smart key ECU assembly) and key ID codes match.

Certification ECU (Smart Key ECU Assembly)

  • The ID code of the key the user is carrying is sent to the electrical key antenna.
  • The certification ECU (smart key ECU assembly) compares the key ID code it receives from the electrical key antenna with its own ID code. If they match, the certification ECU (smart key ECU assembly) permits the steering lock ECU (steering lock actuator or UPR bracket assembly) to turn the power on, start the engine and unlock and lock the steering.
  • Outputs a command to supply power to the steering lock motor based on the power source mode, shift position and vehicle speed signal.
System Description
SYSTEM DESCRIPTION 1. UNLOCK OPERATION CONDITIONS FOR STEERING LOCK (a) When the following condition is met, the unlock operation is performed. The engine switch is on (ACC) or on (IG). H ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the steering lock system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT ...

Other materials:

Seat Position Sensor
Components COMPONENTS ILLUSTRATION On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle not Involved in Collision) (a) Perform a diagnostic system check (See page ). 2. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle Involved in C ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the T14 tire pressure warning ECU and receiver connector and measure the voltage and resistance on the wire harness side. Text in Illustration *A w/o Wireless Door Lock System ...

Tire information
Typical tire symbols 1. Tire size 2. DOT and Tire Identification Number (TIN) 3. Location of treadwear indicators 4. Tire ply composition and materials Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies in a tire. 5. Uniform tire quality grading F ...

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