Toyota Yaris: Integration Relay / Installation

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Power Source & Network / Power Distribution / Integration Relay / Installation

INSTALLATION

PROCEDURE

1. INSTALL SEMICONDUCTOR POWER INTEGRATION ECU

NOTICE:

  • Make sure the connector terminal is free from oil and grease.
  • Do not subject the semiconductor power integration ECU to any impact.
  • Do not use a semiconductor power integration ECU that has been dropped.
  • Do not disassemble the semiconductor power integration ECU.
  • Make sure the lever connector is securely connected.

(a) Connect the connector and pull down the lock lever to engage the claw and lock the connector as shown in the illustration.

*a

power source connector

(b) Connect the power source connector.

(c) Engage the claws to install the semiconductor power integration ECU.

2. INSTALL NO. 1 RELAY BLOCK COVER

(a) Engage the claws to install the No. 1 relay block cover.

3. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

Click here

4. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

    Removal

    REMOVAL CAUTION / NOTICE / HINT HINT: When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating...

    Main Body Ecu

    ..

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: VSC does not Operate or VSC does not Operate Correctly


    DESCRIPTION When TRC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred. When a communication malfunction with the ECM is detected, TRC and VSC are disabled. Also, TRC and VSC are disabled when a DTC is stored...

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Communication between ECUs connected by LIN Bus off (B278588)


    DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator or upper bracket assembly) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B278588 Communication between ECUs connected by LIN Bus off No communication between steering lock ECU (steering lock actuator or upper bracket assembly) and certification ECU (smart key ECU assembly) for 10 seconds or more...

    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 © 2025 www.toyaris4.com