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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 128 (Electronically Controlled Brake System - Diagnostic Codes (C1311-C1413) (Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1311: Open Circuit in Main Relay 1; DTC C1312: Short Circuit in Main Relay 1 [04/2018 -] >> Component Operating Range

Component Operating Range

WARNING: This page is about a different variant/trim than selected.
C12FA

All of the following conditions are met -
Skid control ECU (brake booster with master cylinder assembly) state Normal
Command to main relay On
Brake system voltage 1 (VM1) Higher than 6.92 V
Power supply for linear solenoid 3.5 V or more
C12FB (CASE 1)

All of the following conditions are met -
Skid control ECU (brake booster with master cylinder assembly) state Normal
Command to main relay Off
Power supply for linear solenoid Less than 3.5 V
C12FB (CASE 2)

All of the following conditions are met -
Skid control ECU (brake booster with master cylinder assembly) state Initial check
Command to main relay Off
Power supply for linear solenoid Less than 3.5 V
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