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

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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...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 Circuit Current Below Threshold (P227118)

DESCRIPTION Refer to DTC P003612. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P227118 A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 Circuit Current Below Threshold While the fuel-cut operation is performed (during vehicle deceleration), the air fuel ratio sensor (sensor 2) current is less than 7...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Diagnosis System

DIAGNOSIS SYSTEM FUNCTION OF WARNING INDICATOR AND MESSAGE (a) If the pre-collision system is not functioning properly, the driver is warned by the PCS warning light and a warning message is displayed on the multi-information display. Warning Message Detail DTC/RoB PCS warning light "Pre-Collision System Malfunction Visit Your Dealer" Pre-collision system malfunctioning Stored Illuminates "Pre-Collision System Radar In Self Calibration Unavailable See Owner's Manual" Millimeter wave radar sensor assembly misaligned Stored Illuminates "Pre-Collision System Out of Temperature Range Unavailable See Owner's Manual" Millimeter wave radar sensor assembly temperature malfunction Stored Illuminates "Pre-Collision System Unavailable See Owner's Manual" Millimeter wave radar sensor assembly voltage malfunction Determination was made for temporary suspension of system operation due to millimeter wave radar sensor assembly detecting interference from other nearby radar emitters Stored Illuminates "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" Foreign matter attached to millimeter wave radar sensor assembly Stored Illuminates "Front Camera Unavailable See Owner's Manual" Abnormal forward recognition camera voltage Stored Illuminates "Front Camera Out of Temperature Range Unavailable Wait until Normal Temperature" Forward recognition camera temperature outside of operational range Stored Illuminates "Front Camera Low Visibility Unavailable See Owner's Manual" Foreign matter attached to forward recognition camera or area of windshield in front of forward recognition camera Forward recognition camera or area of windshield in front of forward recognition camera is fogged up Stored Illuminates "VSC Turned Off Pre-Collision Brake System Unavailable" VSC system is disabled Not stored Illuminates PCS Warning Light Illumination Status PCS Warning Light Condition Illuminates Pre-collision system malfunctioning Pre-collision system temporarily disabled During pre-collision system radar alignment Pre-collision system disabled VSC system disabled Not illuminated Other INITIAL CHECK (a) An initial check is performed when the ignition switch is off for more than 2 seconds and then turned ON...