DTC C2405-27: Motor Position Sensor Fault: General Description

The IEB module is composed of a Electronic Control Unit (ECU) and an Hydraulic Control Unit (HCU), so the IEB module hardware includes all solenoid valves inside the unit as well as the ECU.

Solenoid valves are switched to "ON", "OFF" by IEB module when the ABS is activated. Solenoid valves function is to increase, decrease or maintain the hydraulic pressure supplied to a wheel cylinder.