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:

Removal
REMOVAL PROCEDURE 1. REMOVE MILLIMETER WAVE RADAR WIRE (a) for Type A: (1) Disconnect the 2 connectors. (2) Using a clip remover, disengage the 4 clamps to remove the millimeter wave radar wire. (b) for Type B: (1) Disc ...

Automatic High Beam Camera (B124C)
DESCRIPTION The main body ECU (multiplex network body ECU) detects a high beam headlight illumination request signal of the automatic high beam system from the forward recognition camera DTC No. Detection Item DTC Detection Condition Trouble Area ...

Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedure for both the LH and RH sides. The procedure described below is for the LH side. PROCEDURE 1. REMOVE NO. 1 HEADLIGHT BULB (a) Turn the No. 1 headlight bulb in the direction indicated by the arrow i ...