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:

Four Wheel Drive (4WD) Range Signal Circuit Range / Performance (P279E)
DESCRIPTION When the transfer position switch is switched, the 2-4 terminal and LO terminal change to one of the following ON/OFF combinations listed in the table below. Terminal 2WD Between 2WD and H4 H4 Between H4 and L4 L4 ...

System Diagram
SYSTEM DIAGRAM Communication Table Sender ECU Receiver ECU Signal Line *1: for Vacuum Brake Booster *2: for Hydraulic Brake Booster Forward Recognition Camera Combination Meter Assembly ...

Removal
REMOVAL PROCEDURE 1. REMOVE ENGINE ASSEMBLY (See page ) 2. REMOVE IGNITION COIL ASSEMBLY 3. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 4. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 1) 5. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exha ...

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