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

Toyota Tacoma (2015-2018) Service Manual / Engine Immobiliser / Engine Immobiliser System(w/ 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.
If the problem only occurs in certain locations or at certain times of day, check for wave interference.
If the vehicle components are added, check for wave interference from the added components.

Engine Immobiliser System (w/ Smart Key System)

Symptom	Suspected Area	See page
Security indicator light does not blink	Proceed to "Security Indicator Light Does not Blink"
Engine immobiliser system does not operate properly	Proceed to "Immobiliser System does not Operate Properly"
Engine cannot be started*1	Certification ECU (smart key ECU assembly)
	ECM
	SFI system
Power source mode cannot be changed*1	Engine switch
Power source mode cannot be changed*1	Certification ECU (smart key ECU assembly)
Steering lock lock/unlock not possible*2	Steering lock ECU (steering lock actuator or upr bracket assembly)

*1: Refer to Problem Symptoms Table for Smart Key System (for Start Function).
*2: Refer to Problem Symptoms Table for Steering Lock System.

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use this procedure to troubleshoot the engine immobiliser system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO W ...

Registration

REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION HINT: Registering an ID code enables the entry and start function, wireless door lock control function and engine immobiliser ...

Other materials:

Inspection
INSPECTION PROCEDURE 1. INSPECT OIL CLEARANCE (a) Using a micrometer and caliper gauge, measure the oil seal clearance. Standard clearance: 0.021 to 0.043 mm (0.0008 to 0.0017 in.) Maximum clearance: 0.07 mm (0.0028 in.) If it is greater than the maximum, replace the vane pump assembly. ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL OIL PUMP COVER (a) Apply fresh engine oil to the drive and driven rotors. (b) Place the drive and driven rotors into the timing chain cover assembly with the marks facing the oil pump cover side. Text in Illustration *a ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION The 4 wheel drive control ECU records DTCs when the ECU detects a malfunction in the ECU itself or in system circuits. The DTCs can be read through the DLC3 of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions ...