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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] >> 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)

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
C052D (CASE 4)

Low side voltage of motor 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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