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:

Removal
REMOVAL PROCEDURE 1. REMOVE STEERING PAD (See page ) 2. REMOVE STEERING WHEEL ASSEMBLY 3. REMOVE LOWER STEERING COLUMN COVER 4. REMOVE UPPER STEERING COLUMN COVER 5. REMOVE SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR (a) Slide the slider and disconnect the airbag connect ...

Dtc Check / Clear
DTC CHECK / CLEAR HINT: DTCs which are stored in the ECM can be displayed on the Techstream. The Techstream can display pending DTCs and current DTCs. Some DTCs are not stored unless a malfunction is detected in consecutive driving cycles. When a malfunction is detected in o ...

Mechanical System Tests
MECHANICAL SYSTEM TESTS 1. STALL SPEED TEST HINT: This test is to check the overall performance of the engine and transmission. CAUTION: This test should be done on a paved surface (a surface that is not slippery). To ensure safety, perform this test in an open and level area tha ...