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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 [12/2019 - 10/2021] >> Component Operating Range

Component Operating Range

WARNING: This page is about a different variant/trim than selected.
C052B (CASE 1, 2, 3 AND 15)

ECU state Pre main
ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
C052B (CASE 4 AND 11) AND C052E (CASE 5)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 5)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
Command to motor fail-safe relay cut-off 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
C052B (CASE 6 AND 14) AND C052E (CASE 2)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 7) AND C052E (CASE 3)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 8) AND C052E (CASE 8)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 9)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 10) AND C052E (CASE 4)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052B (CASE 12)

All of the following conditions are met -
+BS voltage Less than 17.4 V
+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
Command to motor fail-safe relay cut-off 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 13)

All of the following conditions are met A, B and C
A. +BS voltage 9.5 V or more, and less than 17.4 V
B. Command to motor fail-safe relay On
C. Either of the following conditions is met -
Command to motor fail-safe relay Off
Motor circuit current Less than 264 A
C052C (CASE 1)

All of the following conditions are met -
Motor relay input signal permission On
+BS voltage 9.5 V or more, and less than 17.4 V
Command to motor fail-safe relay On
Motor duty output order value 100%
Low side voltage of motor 2.5 V or less
High side voltage of motor 4.7 V or more
C052C (CASE 2)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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 On
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 1) AND C052E (CASE 1)

All of the following conditions are met A, B, C, D, E, F, G and H
A. +BS voltage 9.5 V or more, and less than 17.4 V
B. Command to motor fail-safe relay Off
C. Command to reverse battery protection MOS Off
D. Either of the following conditions is met Higher than 4.002 seconds
Command to motor fail-safe relay Off
Motor duty output order value 0%
E. Low side voltage of motor Higher than 2.5 V, and less than 4.7 V
F. High side voltage of motor Higher than 2.5 V, and less than 4.7 V
G. Difference high side voltage of motor and low side voltage of motor Less than 0.7 V
H. ABS pump motor fail (C052B, C052D, C052E, C055B) Not detected
C052D (CASE 2, 3 AND 4) AND C052E (CASE 5)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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
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
C052E (CASE 6)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
Command to motor fail-safe relay On
Motor duty output order value 100%
Low side voltage of motor 2.5 V or less
High side voltage of motor 4.7 V or more
C052E (CASE 7)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+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 On
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
C052E (CASE 9)

All of the following conditions are met -
+BS voltage 9.5 V or more, and less than 17.4 V
+BM voltage 6 V or more
Motor relay input signal permission On
Command to motor relay On
Motor duty output order value 80%
Command to reverse battery protection MOS On
Command to freewheeling MOS On
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
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 -
+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
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
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