WABCO 400 500 320 0, Maintenance Manual

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Sensor Adjustment and Component Testing
7. Click on Start to begin the test. Figure 8.12.
Fig. 8.12
4014086 a
8. 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 identi
fi cation block on thescreen for results. Sensor
identi fi cation boxes are located in the bottom left portion of theSensor Orientation Test screen. Figure
8.12.

Green background: Correct sensor location. Spin the next sensed wheel as indicated bythe 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.
9. To fi nish the Sensor Orientation Test, click on Stop, then on Close.
10. 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
fi eld located in the bottom right portion of the
Sensor Orientation Test screen. Figure 8.10.
8.5 End of Line Testing without TOOLBOX PLUS™ Software
8.5.1 2S/1M Standard
1. Apply 12 volts DC power to the ABS.
2. The ECU/single modulator valve assembly should click multiple 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 less than 25 rpm . The ABS indicator
lamp should now go out and stay out indicating a correct installation. The end of line test is
complete.