Skip to content

IBST_a077 — Run Out Motor Saturated

Full alert identifier: IBST_a077_runOutMotorSaturated

Alert description

Indicates IBST pRunout brake pressure was not reached due to motor torque output saturation.

Potential impact

iBooster will have smaller EBR bandwidth but EBR will be executed by ESP thus no change in overall EBR bandwidth. If motor torque is saturated below legal deceleration limit, the PSD (a082) will be set.

Set condition

Set when IBST cannot reach pRunout with full motor torque output. 300ms debounce time.

Clear condition

Cleared when master cylinder brake pressure from ESP must reach near pRunout value.

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of IBST_a077.

Browse all IBST alert codes