Toyota Yaris: Theft Deterrent System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Theft Deterrent System / Terminals Of Ecu

TERMINALS OF ECU

*1

Power Distribution Box Assembly

*2

Main Body ECU (Multiplex Network Body ECU)

CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

(b) Reconnect the power distribution box assembly connector.

(c) Measure the voltage and resistance according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connectors connected.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

MB-13 (GND1) - Body ground

Ground

Always

Below 1 Ω

MB-14 (GND2) - Body ground

Ground

Always

Below 1 Ω

MB-26 (BECU) - Body ground

Auxiliary battery power supply

Always

11 to 14 V

MB-27 (IGR) - Body ground

IG power supply

Ignition switch ON

11 to 14 V

(d) Install the main body ECU (multiplex network body ECU) to the power distribution box assembly.

(e) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

4E-5 (FRCY) - Body ground

Front door courtesy light switch (for RH) input

Front door RH open

Below 1 V

Front door RH closed

11 to 14 V

4E-3 (FLCY) - Body ground

Front door courtesy light switch (for LH) input

Front door LH open

Below 1 V

Front door LH closed

11 to 14 V

4E-2 (BCTY) - Body ground

Back door courtesy light switch input

Back door closed

Below 1 V

Back door open

11 to 14 V

H4-3 (LSFR) - Body ground

Front door RH unlock detection switch input

Front door RH unlocked

Below 1 V

Front door RH locked

Pulse generation

H4-9 (LSFL) - Body ground

Front door LH unlock detection switch input

Front door LH unlocked

Below 1 V

Front door LH locked

Pulse generation

H4-28 (L2) - Body ground

Driver door key-linked lock input

Driver door key cylinder turned to lock

Below 1 V

H4-28 (L2) - Body ground

Driver door key-linked lock input

Driver door key cylinder not turned

Pulse generation

H4-4 (UL3) - Body ground

Driver door key-linked unlock input

Driver door key cylinder turned to unlock

Below 1 V

H4-4 (UL3) - Body ground

Driver door key-linked unlock input

Driver door key cylinder not turned

Pulse generation

H4-27 (HCTY) - Body ground

Engine hood courtesy switch input signal

Back door closed (OFF) → open (ON)

10 kΩ or higher → Below 1 Ω

4D-4 (SH) - Body ground

Security horn drive

Security horn sounding (Theft deterrent system is in alarm sounding state)

Pulse generation (Below 1 V ←→ 11 to 14 V)

4B-43 (HORN) - Body ground

Vehicle horn drive

Vehicle horns sounding (Theft deterrent system is in alarm sounding state)

Pulse generation (Below 1 V ←→ 11 to 14 V)

4D-11 (HORN) - Body ground

    Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE NOTICE: If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration. Click here HINT: Troubleshooting of the theft deterrent system is based on the premise that the power door lock control system and the wireless door lock control system are operating normally...

    Data List / Active Test

    DATA LIST / ACTIVE TEST DATA LIST HINT: Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts...

    Other information:

    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Steering Angle Sensor Wrong Installation (X0455)


    DESCRIPTION Code Tester Display Measurement Item Trouble Area RoB Output from X0455 Steering Angle Sensor Wrong Installation History of steering angle sensor being installed incorrectly Correct spiral cable with sensor sub-assembly Steering angle sensor Brake CAUTION / NOTICE / HINT NOTICE: After performing the inspection, check and clear the vehicle control history (RoB)...

    Toyota Yaris XP210 (2020-2024) Owner's Manual: Engine Coolant


    Inspecting Coolant Level Inspect the antifreeze protection and coolant level in the coolant reservoir at least once a year—at the beginning of the winter season—and before traveling where temperatures may drop below freezing. Inspect the condition and connections of all cooling system and heater hoses...

    Categories

    Key Suspend Function

    If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle.

    To restore the functions, press the unlock button on the functions-suspended key in the vehicle.

    read more

     
    Copyright © 2024 www.toyaris4.com