Toyota Yaris: Power Integration System / System Description
SYSTEM DESCRIPTION
LOAD OPERATION OUTPUT
(a) Load is turned on or off according to the operation signals and switch signals from each ECU.
| Components | Semiconductor Power Integration ECU | Power Distribution Box Assembly | Operation Signal Communication Support | |
|---|---|---|---|---|
|
*1: w/ Front Seat Heater
*2: Built into power distribution box assembly | ||||
| Headlight ECU Assembly | ○ | - | Not supported | |
| Fog Light Assembly | ○ | - | Supported | |
| Rear Window Defogger / Mirror Heater | - | ○ | Supported | |
| Taillight | - | ○ | Supported | |
| Rear Fog Light | - | ○ | Supported | |
| Back-up Light | - | ○ | Not supported | |
| Outer Rear View Mirror Assembly | - | ○ | Supported | |
| Panel Illumination | - | ○ | Supported | |
| Seat Heater LH*1 | High/Low | - | ○ | Not supported |
| Seat Heater RH*1 | High/Low | - | ○ | Not supported |
| Passenger Seat Buckle Switch Delegated Input | - | ○ | - | |
| Occupant Detection Sensor Delegated Input | - | ○ | - | |
| Rear Seat RH Buckle Switch Delegated Input | - | ○ | - | |
| Rear Seat CTR Buckle Switch Delegated Input | - | ○ | - | |
| Rear Seat LH Buckle Switch Delegated Input | - | ○ | - | |
| IGR Relay*2 | - | ○ | Not supported | |
SEMICONDUCTOR FUSE FUNCTION
(a) When a malfunction current occurs during load operation, the current is shut off before the electrical lines emit smoke, and then load is turned off. After the current is shut off, the off condition is maintained until the operation signals or switch signals turn off.
System Diagram
S..
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use these procedures to troubleshoot the power integration system.
*: Use the GTS.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) When a front camera system DTC is stored, the forward recognition camera stores the current vehicle (ECU or sensor) state as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Select a DTC to display the freeze frame data...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) When an airbag system DTC is stored, the airbag sensor assembly stores the current vehicle (ECU, sensor or squib) state as Freeze Frame Data. CHECK FREEZE FRAME DATA CAUTION: Never measure the resistance of the SRS parts because current from the tester may cause the SRS parts to deploy...
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Refueling
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.
