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:

Inspection
INSPECTION PROCEDURE 1. REMOVE SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR (a) If there are any defects as mentioned below, replace the spiral cable sub-assembly with a new one: Scratches, cracks, dents or chips on the connector or the spiral cable sub-assembly. (b) Inspect the spiral ca ...

Main Switch Circuit
DESCRIPTION When the blind spot monitor main switch assembly (warning canceling switch assembly) is turned on, a signal is sent to the blind spot monitor sensor LH. The blind spot monitor system operates according to this signal. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the ...

GPS Mark is not Displayed
PROCEDURE 1. CHECK CABIN (a) Check the cabin for any object that might interrupt radio reception or additional devices which use radio waves on the instrument panel. If such an object exists, remove it and check if the GPS mark reappears. HINT: The GPS uses ex ...