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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Electronically Controlled Brake System (HV) - Diagnostic Codes (05 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0597-49: Brake System Control Module "A" Internal Electronic Failure; DTC C12F6-62: Left Front Wheel ABS Hold Solenoid / Right Front Wheel ABS Hold Solenoid Signal Compare Failure; DTC C12F7-62: Left Rear Wheel ABS Hold Solenoid / Right Rear Wheel ABS Hold Solenoid Signal Compare Failure; DTC C13BF-62: Brake Pressure Control Solenoid "A" / "B" Signal Compare Failure [12/2019 - 10/2021] >> Component Operating Range

Component Operating Range

WARNING: This page is about a different variant/trim than selected.
C0597 (CASE 1)

All of the following conditions are met -
Command to solenoid relay On
Power supply for solenoid Higher than 6 V
+BS voltage Higher than 9.5 V, and less than 17.4 V
Booster circuit voltage drop signal Off
C0597 (CASE 2)

All of the following conditions are met -
+BS voltage 9.5 V or more
Solenoid relay Off
ASIC output permission Off
ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
Brake system voltage fail (C143B, C143C) Not detected
ABS hold solenoid fail (C0597) Not detected
Wheel speed sensor fail (C14E1, C14E4, C14E7, C14EA) Not detected
C0597 (CASE 3)

All of the following conditions are met -
+BS voltage 9.5 V or more
Solenoid relay On
ASIC output permission Off
Solenoid current output order value 160 mA
Power supply voltage for solenoid 6 V or more
ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
Brake system voltage fail (C143B, C143C) Not detected
ABS hold solenoid fail (C0597) Not detected
Wheel speed sensor fail (C14E1, C14E4, C14E7, C14EA) Not detected
C0597 (CASE 4)

All of the following conditions are met -
+BS voltage 9.5 V or more
Solenoid relay On
ASIC output permission Off
NO solenoid current output order value 160 mA
NC solenoid output order value On
Power supply voltage for solenoid 6 V or more
ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
Brake system voltage fail (C143B, C143C) Not detected
ABS hold solenoid fail (C0597) Not detected
Wheel speed sensor fail (C14E1, C14E4, C14E7, C14EA) Not detected
C0597 (CASE 5)

All of the following conditions are met -
Solenoid relay Off
ASIC output permission Off
ASIC send data NG answer
ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
Brake system voltage fail (C143B, C143C) Not detected
ABS hold solenoid fail (C0597) Not detected
Wheel speed sensor fail (C14E1, C14E4, C14E7, C14EA) Not detected
C12F6, C12F7 AND C13BF

All of the following conditions are met -
Solenoid initial check state Complete
ABS release solenoid fail (C12C9, C12B3, C12F5, C12DF, C12C8, C12B2, C12F4, C12DE) Not detected
ABS hold solenoid fail (C12BE, C12A8, C12EA, C12D4, C12BD, C12A7, C12E9, C12D3, C12F6, C12F7) Not detected
Brake system voltage fail (C143B, C143C) Not detected
SM solenoid fail (C13C3, C13CC, C13C2, C13CB, C13BF) Not detected