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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 [10/2021 - 11/2023] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different variant/trim than selected.
C052B (CASE 1)

Motor fail-safe relay gate voltage monitor On
C052B (CASE 2)

Reverse battery protection MOS gate voltage monitor On
C052B (CASE 3)

Motor relay gate voltage monitor On
C052B (CASE 4 AND 11)

One of the following conditions is met -
Motor relay gate voltage monitor On
Freewheeling MOS gate voltage monitor On
Reverse battery protection MOS gate voltage monitor On
Motor fail-safe relay gate voltage monitor On
C052B (CASE 5)

Low side voltage of motor 4.7 V or more
C052B (CASE 6)

Motor fail-safe relay gate voltage monitor Off
C052B (CASE 7) AND C052E (CASE 7)

Freewheeling MOS gate voltage monitor Off
C052B (CASE 8)

Motor relay gate voltage monitor Off
C052B (CASE 9 AND 12)

Low side voltage of motor 2.5 V or less or, 4.7 V or more
C052B (CASE 10)

Reverse battery protection MOS gate voltage monitor Off
C052B (CASE 13)

All of the following conditions are met -
History of blocking motor relay Off
Command to motor fail-safe relay On
Motor circuit current 264 A or more
C052B (CASE 14)

Motor circuit current 264 A or more
C052B (CASE 15)

Freewheeling MOS overcurrent signal On
C052C (CASE 1)

Either of the following conditions is met -
Ratio of low side voltage of motor and high side voltage of motor ("Higher than motor duty output order value" x -0.0124) + 1.44
High side voltage of motor Less than 4.7 V
C052C (CASE 2)

Either of the following conditions is met -
High pulse width of PWM Less than 0.000021 seconds, or higher than 0.000029 seconds
Low pulse width of PWM Less than 0.000021 seconds, or higher than 0.000029 seconds
C052D (CASE 1 AND 4)

Either of the following conditions is met -
Low side voltage of motor 4.7 V or more
High side voltage of motor 4.7 V or more
C052D (CASE 2 AND 3)

Low side voltage of motor 2.5 V or less, or 4.7 V or more
C052E (CASE 1)

One of the following conditions is met -
Low side voltage of motor 2.5 V or less
High side voltage of motor 2.5 V or less
Difference high side voltage of motor and low side voltage of motor 0.7 V or more
C052E (CASE 2)

Either of the following conditions is met -
Low side voltage of motor Less than 4.7 V
High side voltage of motor Less than 4.7 V
C052E (CASE 3 AND 4)

Low side voltage of motor Less than 4.7 V
C052E (CASE 5)

Either of the following conditions is met -
Low side voltage of motor 2.5 V or less
High side voltage of motor 2.5 V or less
C052E (CASE 6)

Either of the following conditions is met -
Low side voltage of motor Higher than 2.5 V
High side voltage of motor Less than 4.7 V
C052E (CASE 7)

Freewheeling MOS gate voltage monitor Off
C052E (CASE 8)

Either of the following conditions is met -
Low side voltage of motor Higher than 2.5 V
High side voltage of motor Higher than 2.5 V
C052E (CASE 9)

Low side voltage of motor Higher than 2.5 V
C055B

+BM voltage Less than 6 V
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