Toyota Yaris: 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
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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
| 1. | 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 |
|---|---|
| B235A9F is output | A |
| B235A9F is not output | B |
| A |
 | REPLACE POWER DISTRIBUTION BOX ASSEMBLY |
| B |
 | USE SIMULATION METHOD TO CHECK |