Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 20)

20
Cab-mount ECU: Looking into
wire harness connector
Connector Pin Wheel Speed Sensor Location
X1
18 Way
10 Right Drive Axle (+)
11 Right Drive Axle (-)
X2
18 Way
5 Left Steer Axle (+)
8 Left Steer Axle (-)
11 Right Steer Axle (+)
14 Right Steer Axle (-)
15 Left Drive Axle (+)
18 Left Drive Axle (-)
X3
15 Way (if Bendix ®
EC-80 ™ ATC ECU
is configured for 6
sensors)
11 Left Additional Axle (+)
14 Left Additional Axle (-)
12 Right Additional Axle (+)
15 Right Additional Axle (-)
Speed Sensor Repair Tests:
1. Take all measurements at ECU harness connector
pins in order to check wire harness and sensor.
Probe the connector carefully so that the terminals
are not damaged.
2. Wheel speed sensor measurements should read:
Location Measurement
Sensor 1500 - 2500 Ohms
Sensor to voltage or ground Open Circuit (no continuity)
Sensor output voltage
>0.25 of VAC sensor output at ~ 0.5 revs/sec.
3. Clear DTC after issue is corrected. The dynamic
sensor DTC will remain until the power is cycled to
the ABS ECU and vehicle is driven above 15 MPH
or DTC was cleared using either the diagnostic blink
code switch or diagnostic tool.