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

Toyota Tacoma (2015-2018) Service Manual / Differential / Differential System(w/ Rear Differential Lock) / 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:

Dtc Check / Clear
DTC CHECK / CLEAR 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 / Pre-Collision 2 / Trouble Codes. (e) Check for DTCs. Click here CLEAR DTC (a) Connect the Techstream to the ...

Tire Pressure Monitor ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Tire Pressure Monitor ECU Communication Stop Mode Either condition is met: Communication stop for "Tire Pressure2" is indicated on the "Communication Bus C ...

Vacuum Warning Switch
Components COMPONENTS ILLUSTRATION On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR 2. INSPECT BRAKE BOOSTER ASSEMBLY 3. INSPECT VACUUM WARNING SWITCH ASSEMBLY (a) Start the engine and stop it after 1 or 2 minutes. (b) Disconnect the ...