4
Component Replacement
48
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
Figure 4.16
5.
Remove the two mounting capscrews and nuts. Remove the
ESC module.
NOTE:
ESC modules are installed by the OEM close to the
vehicle center of gravity. Depending on the vehicle
manufacturer, the ESC module might face towards the front of
the vehicle or rear. For correct operation and the best
performance, verify the ESC module is correctly leveled and
securely mounted as per OEM specs. Do not move the module
to a different location as this will affect the system
performance.
Installation
NOTE:
It is important that the module is aligned correctly and
the tab on the ESC mounting surface fits into the appropriate
hole.
1.
Install the ESC module with the two capscrews and nuts.
Tighten the capscrews per the manufacturer’s
recommendation.
2.
Connect the wiring harness connector to the ESC module.
Hand tighten only.
3.
Remove the stands and blocks.
4.
Test the installation.
Test the Installation
To test the ESC module installation, the system must be calibrated.
1.
Follow the ESC End of Line Calibration Procedure described in
this manual.
2.
When the ESC End of Line Calibration Procedure is completed,
the ABS and ATC/ESC lamps should come on and go back off
when ignition power is turned on. The ATC/ESC lamp may
remain on briefly after the ABS lamp goes off.
3.
There should not be any active faults displayed in the ECU
memory.
Brake Pressure Sensor
Removal
WARNING
Park the vehicle on a level surface. Block the wheels to
prevent the vehicle from moving. Support the vehicle with
safety stands. Do not work under a vehicle supported only by
jacks. Jacks can slip and fall over. Serious personal injury and
damage to components can result.
1.
Turn the ignition switch to the OFF position. Apply the parking
brake.
2.
Place blocks under the front and rear tires to prevent the
vehicle from moving.
3.
If necessary, raise the vehicle off the ground and place safety
stands under the vehicle.
WARNING
Relieve line pressure by bleeding the air from the appropriate
supply tank. Pressurized air can cause serious personal injury.
4.
Disconnect the wiring harness connector from the brake
pressure sensor. Figure 4.17.
Figure 4.17
Figure 4.1
6
401060
9a
± 5°
-5°
Z
+2°
-2°
Y
+2°
-2°
X
Figure 4.17
4006870
a
27 FT-LB
(36.6 Nm)
TORQUE
