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