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

Toyota Tacoma (2015-2018) Service Manual / Door Lock / Wireless Door Lock Control System(w/o Smart Key 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.

Wireless Door Lock Control System

Symptom	Suspected Area	See page
Only wireless control function is inoperative	Proceed to "Only wireless control function is inoperative"
Only answer-back function does not operate normally	Proceed to "No answer-back"
Only automatic lock function does not operate normally	Perform the operation check
	Key reminder warning system
	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 the operation check
	Lighting system
	Main body ECU (multiplex network body ECU)	-
Only door ajar warning function does not operate	Perform the 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 (int) (interior lights)
	Lighting system (ext) (headlights, taillights, hazard lights)
	Theft deterrent system (vehicle horn)*1
	Horn system*2
	Main body ECU (multiplex network body ECU)	-

*1: w/ Theft Deterrent System
*2: w/o Theft Deterrent System

Customize Parameters

CUSTOMIZE PARAMETERS PROCEDURE 1. CUSTOMIZE WIRELESS DOOR LOCK CONTROL SYSTEM HINT: The following items can be customized. NOTICE: When the customer requests a change in a function, firs ...

Registration

REGISTRATION CAUTION / NOTICE / HINT HINT: Register a new recognition code when replacing the door control transmitter module set sub-assembly or the door control receiver. Add mode ...

Other materials:

System Diagram
SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signals Communication Method ECM Skid control ECU Throttle position signal Engine speed signal Accelerator pedal position ...

Open or Short in Rear Speed Sensor RH Circuit (C1407,C1408)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1407 C1408 Either condition is met: An open in the speed sensor signal circuit continues for 0.5 seconds or mor ...

Navigation Receiver
Components COMPONENTS ILLUSTRATION ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE INSTRUMENT CLUSTER CENTER FINISH PANEL SUB-ASSEMBLY (See page ) 2. REMOVE NAVIGATION RECEIVER ASSEMBLY WITH BRACKET (a) Remove the 4 bolts. (b ...