Toyota Yaris: Power Integration System / System Description

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Power Source & Network / Power Distribution / 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 NEXT 2...

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