Toyota Tacoma (2015-2018) Service Manual: Problem Symptoms Table

Toyota Tacoma (2015-2018) Service Manual / Steering Column / Steering Lock System / 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.

Steering Lock System

Symptom	Suspected Area	See page
Steering lock does not lock	Refer to "Steering Lock does not Lock"
Steering does not unlock (engine cannot be started)	Refer to "Unable to Unlock Steering Wheel (Engine cannot Start)"

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the steering lock system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT ...

Diagnosis System

DIAGNOSIS SYSTEM 1. DESCRIPTION (a) The steering lock ECU (steering lock actuator or UPR bracket assembly) stores DTCs when a malfunction occurs in the system. These DTCs can be confirmed by using ...

Other materials:

Taillight Relay Circuit
DESCRIPTION The main body ECU (multiplex network body ECU) controls the operation of the TAIL relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure. If the main body EC ...

Installation
INSTALLATION PROCEDURE 1. INSTALL FRONT SEATBACK HEATER ASSEMBLY (a) Set the front seatback heater assembly with the name stamp side facing the front seatback cover. (b) Install the front seatback heater assembly with 14 new tag pins. 2. INSTALL SEPARATE TYPE FRONT SEATBACK COVER (for Front P ...

Disassembly
DISASSEMBLY PROCEDURE 1. INSPECT COUNTERSHAFT REVERSE GEAR THRUST CLEARANCE (a) Using a dial indicator, measure the countershaft reverse gear thrust clearance. Standard clearance: 0.150 to 0.300 mm (0.0060 to 0.0118 in.) If the clearance is outside the specification, repl ...