Toyota Yaris: Power Integration System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Power Source & Network / Power Distribution / Power Integration System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Semiconductor Power Integration ECU

Symptom	Suspected Area	Link
LED headlight does not illuminate	Lighting system
Daytime running light does not illuminate	Lighting system
Fog lights do not illuminate	Lighting system

Power Distribution Box Assembly

Symptom	Suspected Area	Link
Rear taillights does not illuminate	Lighting system
Back-up light does not illuminate	Lighting system
Rear lights do not illuminate	Lighting system
Rear defogger does not operate	Window Defogger System
Panel lights do not illuminate	Lighting system
Mirror heater does not operate	Power Mirror Control System
Power retract mirror does not operate	Power Mirror Control System
Driver side seat heater does not operate (w/ Front Seat Heater)	Seat heater system
Front passenger side seat heater does not operate (w/ Front Seat Heater)	Seat heater system
Driver side seat belt warning light does not operate	Seat Belt Warning System
Front passenger side seat belt warning light does not operate	Seat Belt Warning System

Utility

U..

Terminals Of Ecu

TERMINALS OF ECU NOTICE: After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal...

Other information:

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

CALIBRATION NOTICE: When the AWD ECU assembly is replaced, before removing the AWD ECU assembly, it is necessary to perform ECU Data Save to save the original AWD ECU assembly information. When the AWD ECU assembly is replaced, it is necessary to perform the following in order: ECU Data Initialization and ECU Data Write...

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

OPERATION CHECK CHECK WINDOW DEFOGGER SYSTEM (a) Turn the ignition switch to ON. (b) Check that the rear window defogger wire becomes warm by operating the rear window defogger switch of the air conditioning control assembly. (c) When the vehicle is stopped, confirm that the window defogger system operation stops after approximately 15 minutes...