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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 65 (Electronically Controlled Brake System (HV) - Diagnostic Codes (10 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1451-51: High Pressure Tube Air Bleeding Not Programmed [12/2019 - ] >> Description

DTC C1451-51: High Pressure Tube Air Bleeding Not Programmed [12/2019 - ]: Description

WARNING: This page is about a different variant/trim than selected.

If air bleeding has not been performed, the No. 1 skid control ECU (brake booster with master cylinder assembly) stores DTC C1451-51 to prevent the entry of air due to pump motor operation.

DTC C1451-51 is stored when Motor Deactivate is selected, the system will not return to normal until the air bleeding procedure is performed.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C1451-51 High Pressure Tube Air Bleeding Not Programmed Either of the following is detected:
  • Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed.
  • The brake booster with master cylinder assembly has been replaced.
Air bleeding not performed Does not come on Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly)

HINT: 

  • The DTC is cleared when the conditions return to normal.
  • ECB: Electronically Controlled Brake System