Integrated Control Unit (ICU): Description
The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration. Certain components may also reference ESP, ESC, or use the traction control symbol.
The Hydraulic Control Unit (HCU) (2) and the Antilock Brake Module (ABM) (1) used with this antilock brake system are combined (integrated) into one unit, which is called the Integrated Control Unit (ICU).
The ICU (1) is located in the engine compartment, mounted on a bracket (3) attached to the left side of the front inner fender.
The ABS with ESC® and All-Speed Traction Control ICU consists of the following components: the ABM, 8 (build/decay) solenoid valves, two traction control solenoid valves, two electronic shuttle valves, valve block, fluid accumulators, a pump, and an electric pump/motor.
The replaceable components of the ICU are the HCU and the ABM. No attempt should be made to service any components of the HCU or ABM. The ABM can be serviced without removing the entire assembly from the vehicle.
For additional information on the ABM, refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), DESCRIPTION . For additional information on the HCU, refer to HYDRAULIC CONTROL UNIT (HCU), DESCRIPTION .