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Stability and Safety Enhance Te Cut
‘The ESC ECU contains parameter settings which are specific to a vehicle configuration validated by WAB-
CO Engineering. Itis imperative that the correct ECU is installed on your vehicle in service. Contact WAB-
CO or your respective vehicle OEM with any questions regarding ESC ECU. Figure 4.8 and Figure 4.9.
Fe48
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 according to OEM specifications. Do not move the module to a different
location 2s this will affect the system performance,
Fg 40 Component Replacement
Fg.018
5. Remove the two mounting eapserews and nuts. Remove the ESC module.
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 GEM specs. Do not move the module to a diferent location as
this will affect the system performance.
Installation
Itis 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 eapscrews and nuts. Tighten the capscrews per the
‘manufacturer's recommendation,
2. Connect the wiring hamess connector to the ESC module. Hand tighten only,
3. Remove the stands and blocks.
4, Test the instalation.
Test the Installation
To test the ESC module installation, the system must be calibrated
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 ATCIESC lamps should
come on and go back off when ignition power is tumed 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. PN) Tela
11 Appendix Il
11.1 E4 ESC End of Line Calibration Procedure
This procedure is performed as part of the final assembly of the vehicle at the manufacturing site. Also, this
procedure must be performed in the field by a trained technician if components are replaced such as the
‘Steering Angle Sensor (SAS), the Electronie Stability Control (ESC) module or the ESC Electronic Control
Unit (ECU). This calibration should also be performed when a major steering repair or replacement has
taken place,
“The process consists of two operations. The first one is the SAS Calibration while the vehicle is stationary,
followed by the ESC Initialization while driving the vehicle. The status of the ESC End of Line (EOL)
procedure can be verified using one of the following allowed fauilts.
= SAS not calibrated — SID 89, FMI 13
= ESC initialization required — SID #8, FMI 13
= ESC initialization not completed — SID 88, FMI 1
‘Additional faults must not be active. Any other faults must be resolved before one of the main menu
items is available
‘To prevent incorrect activations, SAS Calibration and ESC Initialization must be done
separately. itis necessary to perform the SAS calibration prior to the ESC initialization.
For any questions or assistance, please contact the WABCO Customer Care at Center at 855-228-3203 or
visit wabco-na.com for further details.
11.1.1 SAS Calibration
® ‘The SAS Calibration must be done after a front wheel alignment has been performed.
Depending on the software version used, there will be two options to communicate with the: vehicle:
= Ifyou are using TOOLBOX™ Software version 11 or higher and a vehicle with ECUs E4.4b or higher,
Tractor ABS J1938 communications can be possible. Figure 11.1
