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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 C14C9-A2: Electronic Brake Booster Control Module "A" System Voltage Low [12/2019 - 10/2021] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before performing troubleshooting, make sure to confirm that the auxiliary battery voltage is normal.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

  • After replacing the No. 1 skid control ECU (brake booster with master cylinder assembly), perform "Calibration".

    Refer to UTILITY [12/2019 - 11/2023]

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