Integrated Anti-Lock Brake System (Abs) Control Module And Hydraulic Control Unit (HCU)
| ITEM | DESCRIPTION |
|---|---|
| 1 | Right rear brake |
| 2 | Left front brake |
| 3 | Right front brake |
| 4 | Left rear brake |
| 5 | Primary circuit inlet port |
| 6 | Secondary circuit inlet port |
The ABS control module controls the two EPB actuators separately. A longitudinal accelerometer sensor is integrated into the Restraints Control Module (RCM) which communicates with ABS control module on the HS CAN chassis systems bus. The longitudinal accelerometer in combination with the wheel speed sensors allows the ABS control module to determine the longitudinal attitude of the vehicle and to monitor vehicle deceleration.
Four hardwired connections with the EPB switch provide the ABS control module with park brake apply and release inputs. As the EBP is integrated into ABS control module, wheel speed sensors are also hard wired. Inputs from other components are received on the HS CAN, as follows:
- Accelerator Pedal Position (APP) sensor, from the ECM
- Stop lamp switch, from the ECM
- Clutch pedal position sensor, from the ECM
- Reverse gear switch, from the Central Junction Box (CJB) (manual transmission vehicles only)
- Gear position, from the Transmission Control Module (TCM) (automatic transmission vehicles only)
- 1st gear switch, from the ECM (manual transmission vehicles only)
In addition to the hardwired outputs to the EPB actuators, the ABS control module outputs status and fault signals on the HS CAN to operate the warning indicators and advise other systems if there is a fault with the EPB system.