Toyota Yaris: Power Integration System / IGR Diode Stuck Off (B235A9F)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Power Source & Network / Power Distribution / Power Integration System / IGR Diode Stuck Off (B235A9F)

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.

Detection Item

DTC Detection Condition

Trouble Area

B235A9F

IGR Diode Stuck Off

At the time of IGP input state ON, an IGR input state continues OFF state for three consecutive trips.

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 1.5 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

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

    Click here

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

    Click here

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Power Distribution Box > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Power Distribution Box > Trouble Codes

Result

Proceed to

B235A9F is output

A

B235A9F is not output

B

A

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

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