Toyota Yaris: Power Integration System / Power Distribution Box System Internal Failure (B235504)

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Power Source & Network / Power Distribution / Power Integration System / 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

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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.
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Before performing troubleshooting, check whether there are any malfunctions with the air conditioning system.
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Before performing troubleshooting, check whether there are any malfunctions with the window defogger system.
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PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Power Distribution Box > Clear DTCs

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Distribution Box > Trouble Codes

Result	Proceed to
B235504 is not output	A
B235504 is output	B

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

USE SIMULATION METHOD TO CHECK

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DESCRIPTION This DTC is output when a diode failure between the IGP input and the IGR input in the power distribution box assembly is detected. DTC No...

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