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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 136 (Electronically Controlled Brake System (HV) - Diagnostic Codes (04 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C052C-14: ABS Pump Motor Control Circuit Short to Ground or Open; DTC C052C-16: ABS Pump Motor Control Circuit Voltage Below Threshold; DTC C052C-17: ABS Pump Motor Control Circuit Voltage Above Threshold; DTC C052C-29: ABS Pump Motor Control Signal Invalid; DTC C052C-49: ABS Pump Motor Control Internal Electronic Failure; DTC C052F-14: ABS Pump Motor Supply Voltage Circuit Short to Ground or Open [11/2023 - ] >> Component Operating Range

Component Operating Range

WARNING: This page is about a different variant/trim than selected.
C052B (CASE 16, 17 AND 26)

Both of the following conditions are met -
ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
C052B (CASE 18 AND 23) AND C052E (CASE 14)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay 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
C052B (CASE 19) AND C052E (CASE 12)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission On
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS On
Command to motor fail-safe relay 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
C052B (CASE 20) AND C052E (CASE 16)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission On
Command to motor relay On
Motor duty output order value 100%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay 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
C052B (CASE 21)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay On
Motor duty output order value 100%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay 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
C052B (CASE 22) AND C052E (CASE 13)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS On
Command to freewheeling MOS Off
Command to motor fail-safe relay 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
C052B (CASE 24)

All of the following conditions are met -
+BS voltage 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission On
Command to motor relay On
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe 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
C052B (CASE 25)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Command to motor relay On
Motor circuit current Less than 264 A
C052C (CASE 3)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Command to motor fail-safe relay On
Motor duty output order value 100%
Voltage difference between high and low side of motor (MTDIF voltage) 3 V or more
C052C (CASE 4)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay On
Motor duty output order value 50%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay Off
Command to motor fail-safe relay cut-off 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
C052D (CASE 5)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Motor stop state On
Command to motor fail-safe relay On
High side voltage of motor (MT voltage) Less than 3 V
Voltage difference between high and low side of motor (MTDIF voltage) Less than 3 V
C052D (CASE 6)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Command to motor fail-safe relay Off
High side voltage of motor (MT voltage) Higher than 3 V
C052D (CASE 7 AND 8)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay 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
C052E (CASE 10)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Motor stop state On
High side voltage of motor (MT voltage) Less than 3 V
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
C052E (CASE 11)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission Off
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay On
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
C052E (CASE 15)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
Command to motor fail-safe relay On
Motor duty output order value 100%
Difference BM voltage and high side voltage of motor (MT voltage) 1.5 V or less
Voltage difference between high and low side of motor (MTDIF voltage) 3 V or more
C052E (CASE 17)

All of the following conditions are met -
+BS voltage 9.5 V or more, and 17.4 V or less
+BM voltage 6 V or more
Motor relay input signal permission On
Command to motor relay On
Motor duty output order value 90%
Command to reverse battery protection MOS On
Command to freewheeling MOS On
Command to motor fail-safe relay 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
C055B (CASE 1)

Both of the following conditions are met -
+BS voltage 9.5 V or more
+BM voltage 6 V or more
C055B (CASE 2)

All of the following conditions are met -
+BS voltage 9.5 V or more
Motor relay input signal permission Off
Command to motor relay Off
Motor duty output order value 0%
Command to reverse battery protection MOS Off
Command to freewheeling MOS Off
Command to motor fail-safe relay 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