Toyota Tacoma manuals

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

SYSTEM DIAGRAM

Transmitting ECU (Transmitter)

Receiving ECU

Signal

Communication Method

4 wheel drive control ECU

Skid control ECU (Brake actuator assembly)

  • Rear differential lock status signal
  • High-Low actuator fail*
  • 4WD status signal*
  • L4 status signal*

CAN communication system

Skid control ECU (Brake actuator assembly)

4 wheel drive control ECU

  • Wheel speed sensor error signal
  • Wheel speed signal
  • Vehicle speed signal
  • Vehicle speed status flag

CAN communication system

4 wheel drive control ECU

Combination meter assembly

  • Rear differential lock indicator light signal
  • Buzzer signal

CAN communication system

  • *: for 4WD
Precaution
PRECAUTION 1. IGNITION SWITCH EXPRESSION (a) The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are us ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedure listed to troubleshoot the differential system (w/ Differential Lock). *: Use the Techstream. PROCEDURE 1 ...

Other materials:

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART NOTICE: When removing any parts, turn the ignition switch off. HINT: If no abnormality is found when inspecting parts, check the skid control ECU and check for poor contact at ground points. When 2 or more DTCs are detected, perform each circuit insp ...

Installation
INSTALLATION PROCEDURE 1. INSTALL PARK/NEUTRAL POSITION SWITCH HINT: Make sure that the manual valve lever shaft has not been rotated prior to installing the park/neutral position switch as the detent spring may become detached from the manual valve lever shaft. (a) Clean the bolt and bolt ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE TELEPHONE MICROPHONE ASSEMBLY Click here 2. REMOVE MICROPHONE CASE HINT: Use the same procedure for Double Cab. Click here 3. REMOVE NO. 1 ROOF WIRE (w/ Vanity Light) (a) w/ EC Mirror: (1) Remove the No. 1 roof wire. ...

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