Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: While Alarm is Armed, Battery is Reconnected but Alarm does not Sound

Toyota Tacoma 2015-2018 Service Manual / Theft Deterrent / Theft Deterrent System / While Alarm is Armed, Battery is Reconnected but Alarm does not Sound

DESCRIPTION

While the alarm is armed, the EEPROM inside the main body ECU (multiplex network body ECU) will remember the armed state even if the battery is disconnected, and the alarm will sound when the battery is reconnected.

If the alarm does not sound when the battery is reconnected, the alarm may not have been set, or there may be a malfunction in the main body ECU (multiplex network body ECU).

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration (See page ).*1

  • *1: w/ Smart Key System

PROCEDURE

1.

CHECK SECURITY INDICATOR LIGHT OPERATION

(a) Close all doors and the engine hood.

(b) Lock the doors using wireless operation*1, key linked operation or entry operation*2.

  • *1: w/ Wireless Door Lock System
  • *2: w/ Smart Key System

(c) Check that the security indicator light illuminates.

(d) After 30 seconds have elapsed, check that the security indicator light changes from illuminated to flashing.

HINT:

The illumination status of the security indicator light can be used to determine whether the theft deterrent system is set or unset.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

GO TO THEFT DETERRENT SYSTEM CANNOT BE SET OR UNSET

Some Alarm Functions do not Operate
DESCRIPTION When the alarm sounds, the following alarm functions operate: the roof console box assembly and No. 1 room light assembly illuminates, and the headlights, taillights and hazard lights ...

While Alarm is Armed, Engine Hood is opened but Alarm does not Sound
DESCRIPTION A situation in which the alarm is armed but does not sound when the hood is opened can be caused when the main body ECU (multiplex network body ECU) cannot detect whether the hood cou ...

Other materials:

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary (w/ SDARS System). HINT: Use the table below to help determine the cause of problem symptoms. If ...

System Description
SYSTEM DESCRIPTION PRE-COLLISION SYSTEM DESCRIPTION (a) The pre-collision system uses the pre-collision warning control, pre-collision brake assist control and pre-collision braking control to help avoid a collision or reduce the impact if it determines that the possibility of a collision is h ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT BRAKE PEDAL HEIGHT (a) Check the brake pedal height. Pedal height from dash panel: Type Pedal Height Automatic transmission 164.4 to 174.4 mm (6.473 to 6.866 in.) Manual transmission ...

В© 2011-2021 Copyright www.ttguide.net