Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Wireless Door Lock Control System

Symptom

Suspected Area

See page

Wireless control function and entry function do not operate

Proceed to "All Door Entry Lock / Unlock Functions and Wireless Functions do not Operate"

Wireless control function does not operate but entry function operates

Electrical key transmitter sub-assembly

-

Only answer-back function does not operate normally

Proceed to "No answer-back"

Only automatic lock function does not operate normally

Perform operation check

Lighting system (front door courtesy light switch circuit)

Lighting system (rear door courtesy light switch circuit)

Main body ECU (multiplex network body ECU)

-

Only illuminated entry function does not operate

Perform operation check

Lighting system

Main body ECU (multiplex network body ECU)

-

Only door ajar warning function does not operate

Perform operation check

Lighting system (front door courtesy light switch circuit)

Lighting system (rear door courtesy light switch circuit)

Main body ECU (multiplex network body ECU)

-

Only panic alarm function does not operate

Perform operation check

Lighting system (interior lights)

Lighting system (hazard warning lights)

Horn system

Main body ECU (multiplex network body ECU)

-

Operation Check
OPERATION CHECK 1. NOTICE WHEN CHECKING FOLLOWING (a) Wireless door lock/unlock function: This wireless door lock control function operates only when the following 3 conditions are met: (1) The ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION The ECU stores trouble codes when malfunctions occur. The diagnostic system allows for reading of the trouble codes from the DLC3. Use the Techstream to help diagno ...

Other materials:

System Diagram
SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Skid control ECU (Brake actuator assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Steering angl ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. DTC CHECK USING TECHSTREAM (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 / Air Conditioner / Trouble Codes. (e) Check for DTCs. 2. DTC CLEAR USING TECHSTREAM (a) Conn ...

System Description
SYSTEM DESCRIPTION 1. GENERAL This system has the following functions: manual slide open and close; auto slide open and close; manual tilt up and down; auto tilt up and down; jam protection; key off operation; key-linked open and close; wireless transmitter-linked open sliding roof open warn ...

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