Toyota Yaris: Power Integration System / Power Integration No.1 System Internal Failure (B235204)

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Power Source & Network / Power Distribution / Power Integration System / Power Integration No.1 System Internal Failure (B235204)

DESCRIPTION

This DTC is output when the semiconductor power integration ECU detects a Internal circuit error.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B235204	Power Integration No.1 System Internal Failure	Microcomputer abnormality AD circuit trouble	Semiconductor power integration ECU

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

NOTICE:

When using the GTS with the ignition switch off to troubleshoot:
Connect the GTS to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the GTS and vehicle begins.
Inspect the fuses for circuits related to this system before performing the following procedure.
Before performing troubleshooting, check whether there are any malfunctions with the lighting system.
Click here

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Power Integration No.1 > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Integration No.1 > Trouble Codes

Result	Proceed to
B235204 is output	A
B235204 is not output	B

REPLACE SEMICONDUCTOR POWER INTEGRATION ECU

USE SIMULATION METHOD TO CHECK

Vehicle Control History

VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again...

Power Distribution Box System Internal Failure (B235504)

DESCRIPTION This DTC is output when the power distribution box assembly detects a Internal circuit error. DTC No. Detection Item DTC Detection Condition Trouble Area B235504 Power Distribution Box System Internal Failure Microcomputer abnormality AD circuit trouble The load drive output open or short trouble Power distribution box assembly WIRING DIAGRAM Click here CAUTION / NOTICE / HINT NOTICE: When using the GTS with the ignition switch off to troubleshoot: Connect the GTS to the vehicle, and turn a courtesy switch on and off at 1...

Other information:

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

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during engine unit removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/Replaced Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link Engine assembly Cylinder head sub-assembly Camshaft (for intake or exhaust camshaft) Camshaft timing gear assembly Camshaft timing exhaust gear assembly Fuel injector assembly Fuel pump (for low pressure side) Fuel pump assembly (for high pressure side) Fuel pressure sensor (for low pressure side) Fuel pressure sensor (for high pressure side) Spark plug Ignition coil assembly Air intake system parts Exhaust system parts Turbocharger sub-assembly Inspection after repair Poor idle, etc...

Toyota Yaris XP210 (2020-2026) 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...