Toyota Yaris: Engine Stop And Start Ecu / Removal

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Engine & Hybrid System / Stop And Start / Engine Stop And Start Ecu / Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed, installed, or replaced during the engine stop and start ECU removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedures	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Replacement of Engine stop and start ECU	Upload the number of starter operations Reset air conditioning information Learning air conditioning information Clear the zero point calibration data Perform zero point calibration of the deceleration sensor Check the oil pump with solenoid assembly	Stop and start system
Replacement of Engine stop and start ECU	Update ECU security key	Vehicle control history (RoB) are stored

NOTICE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.

HINT:

When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Lane tracing assist system	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.
Pre-collision system
Stop and start system	Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Power door lock control system Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Air conditioning system	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-

PROCEDURE

1. READ NUMBER OF STARTER OPERATIONS

Click here

2. REMOVE ECU INTEGRATION BOX RH

Click here

3. REMOVE ENGINE STOP AND START ECU

(a) Disengage the 2 claws and remove the engine stop and start ECU from the ECU integration box RH.

NOTICE:

If the ECU integration box RH is deformed or damaged, replace it.
Do not bend the 2 claws more than necessary.

Components

C..

Installation

INSTALLATION CAUTION / NOTICE / HINT NOTICE: After performing the update ECU security key procedure, make sure to perform the initialization procedure for when the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal...

Other information:

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Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: After the ignition switch is turned off, there may be waiting time before disconnecting the cable from the negative (-) auxiliary battery terminal. Click here When disconnecting and reconnecting the auxiliary battery Click here HINT: When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used...