25
Installation
7. Follow the screen prompts, starting with 1, to rotate each sensed wheel end at a rate of 1/2
revolution per second. This rate equals a wheel speed of approximately 4 mph (7 kph). As each
sensed wheel is rotated, check the color of the sensor identification block on the screen for results.
Sensor identification boxes are located in the bottom left portion of the
Sensor Orientation Test
screen.
Spinning the wheels 10 mph (16 kph) or faster may cause the software to terminate the sensor
test.
Green background:
Correct sensor location. Spin the next sensed wheel as indicated by the screen
prompt.
Red background:
Incorrect sensor location. If you get a red background, you must stop the test
(click on
Stop
), make the necessary corrections and repeat Steps 3 through 6.
8. After spinning each wheel, ensure that the wheel stops spinning before moving on to the next wheel
in the test. If this is not done, it causes faults to come active and prevent the Sensor Orientation test
from being completed.
9. Verify there is sensor output. If there is no sensor output, verify that a tone ring has been installed
and that the sensor is pushed all the way in against the tone ring. Perform the necessary repairs and
repeat the test. If the problem persists, contact the WABCO Customer Care Center at 855-228-3203.
Sensor output appears in the Sensors field located in the bottom right portion of the Sensor Orientation
Test screen.
5.7
End of Line Test without TOOLBOX PLUS™ Software
1. Apply 12 volts DC power to the ABS.
2. The ECU/single modulator valve assembly should click two times.
3. If the indicator lamp
comes on
for three seconds and
goes out
:
This indicates a correct installation. The end of line test is complete.
If the ABS indicator lamp
comes on
and
stays on
, check the sensor installation:
A. Remove the power from the ABS and raise the sensed wheels so they may be rotated.
B. Repeat Step 1 and Step 2.
C. Rotate each sensed wheel — one at a time — at a rate of 1/2 revolution per second. This rate
equals a wheel speed of approximately 4 mph (7 kph).
The ABS indicator lamp should now go out and stay out indicating a correct installation. The end of
line test is complete.
4. If the ABS lamp does not go out, there is a sensor gap problem or hardware fault. Adjust the sensor
and, if necessary, perform a fault code check.
5.7.1
Sensor Gap Adjustment
Push the sensor into its holder until it contacts the tooth wheel. At installation, there must be no gap
between the sensor and the tooth wheel.
Measure the AC voltage output. The value should be 0.2 volt AC when the wheel is rotated at a rate of 1/2
revolution per second.
Perform any necessary repairs.
Repeat the sensor installation check. If the trailer lamp still does not go out, a system fault exists. Perform a
fault code check.
