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Home >> Honda >> 2014 >> Accord Plug-In >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> VSA System - Advanced Diagnostics (Hybrid) >> DTC Advanced Diagnostics >> DTC Advanced Diagnostics: VSA related DTCs (2015, 2017) >> TC 81-13: Modulator-Control Unit Internal Circuit Malfunction
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TC 81-13: Modulator-Control Unit Internal Circuit Malfunction

Confirmation Procedure Operating Condition:
  • 1.

    Turn the vehicle to the ON mode.

Execution Initial Diagnosis
Duration About 2 seconds
DTC Type
  • 1 drive cycle
  • ABS indicator on
  • VSA indicator on
  • Brake system indicator on
Fail Safe Action
  • Stop ABS function
  • Stop VSA function
  • Stop TCS function
  • Stop brake assist function
  • Stop EBD function
  • Stop engine drag torque control function
Possible Cause
  • VSA modulator-control unit program not the latest
  • VSA modulator-control unit internal failure
Confirmation Procedure Operating Condition:
  • 1.

    Turn the vehicle to the ON mode, and wait 40 seconds.

Execution Initial Diagnosis/Regular Diagnosis
Duration About 40 seconds
DTC Type
  • 1 drive cycle
  • VSA indicator on
Fail Safe Action
  • Stop VSA function
  • Stop TCS function
  • Stop brake assist function
  • Stop engine drag torque control function
Possible Cause
  • VSA modulator-control unit program not the latest
  • VSA modulator-control unit internal failure