27
Troubleshooting and Testing
Measurements should read as follows:
Pins
Circuit
Measurement
1
Voltage Supply to Chassis Ground
8.0-16.0V
2
(Frame-mounted only) ESC Ground to
Chassis Ground
Less than 1 ohm resistance
3 and 4
Terminating Resistance between ESC
CAN-High to ESC CAN-Low
Approximately 90 ohms
1
With ECU disconnected, check power
supply for battery voltage or ground.
No continuity
2
With ECU disconnected, check ground for
battery voltage or ground.
No continuity
3 and 4
With ECU disconnected, check CAN lines
for battery voltage or ground.
No continuity
3
CAN High Voltage to Chassis Ground
2.5-5.0V
4
CAN Low Voltage to Chassis Ground
0.1-2.4V
Do not load test across power and ground at the ESC Module.
4012659a
1
3
2
4
ESC MODULE CONNECTOR
4.9.1.2
ESC Information Available in WABCO TOOLBOX™ Software 12.7 or Higher
ESC Information can be accessed through WABCO TOOLBOX™ Software 12.7 or higher under
Components, ESC.
To access the ESC Information:
If you are using TOOLBOX™ Software version 12.7 or higher, click on the “Components” button. A drop-
box will appear. Select “ESC” then select “ESC Info”.
