Toyota Yaris: Power Integration System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2025) 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 (2020-2025) Reapir and Service Manual: Starter Circuit Stuck On (P16449E)

DESCRIPTION The engine stop and start ECU detects abnormalities in the DI (+B) value that is input from the integrated IC (stop and start backup boost converter integrated IC) to the CPU. If a logical inconsistency occurs between the +B value and DI (+B) value input to the CPU, the engine stop and start ECU stores DTC P16449E and blinks the stop and start cancel indicator...

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Evaporator Temperature Sensor Circuit Short to Ground (P053511)

DESCRIPTION The No. 1 cooler thermistor is installed to the evaporator in the air conditioner unit to detect the temperature of the cooled air that has passed through the evaporator, which is used to control the air conditioning system. It sends signals to the air conditioning amplifier assembly...