BENDIX EC-17 ANTILOCK TRACTION CONTROL Manual page 28

SECTION IX - TESTING FOR FALSE INDICATION CAUSED BY WHEEL SPEED COMPONENTS
START HERE
FRT
MID
RER
RHT
All LEDs
LFT
Illuminated?
TRC
MOD
SEN
ECU
VLT
™
EC-17 CONTROLLER
DIAGNOSTIC DISPLAY
28
WITH IGNITION ON, HOLD A MAGNET
ON RESET OF EC-17
ARE ALL LEDs ILLUMINATED?
Magnet
here
REMOVE MAGNET
TURN THE IGNITION OFF AND REMOVE 18 AND 30 PIN
CONNECTOR FROM EC-17
OHMMETER TO AC SCALE AND GENTLY PROBE THE
APPROPRIATE SPEED SENSOR "PIN PAIR" WHILE SPINNING
WHEEL BY HAND (REFER TO FIGURE 5 FOR THE SPEED
SENSOR PIN PAIR LOCATION IN THE 18 OR 30 PIN
VOLTAGE OUTPUT FOR BENDIX WS-20™ SENSOR
SHOULD BE ABOVE 0.8 VOLTS AC AT 1 RPS.
VOLTAGE OUTPUT FOR BENDIX WS-24™ SENSOR
SHOULD BE ABOVE 0.250 VOLTS AC AT 0.5 RPS.
IF VOLTAGE IS BELOW THE MINIMUM INSPECT APPROPRIATE
AXLE AND WHEEL FOR PRESENCE OF AN EXCITER OR TONE
RING AND SPEED SENSOR. CHECK SENSOR "GAP" (DISTANCE
BETWEEN SPEED SENSOR AND EXCITER RING) AND BEARING
END PLAY. RE-ADJUST AS NECESSARY.
RUN VEHICLE AT 7 MPH OR MORE
FOR 10 SECONDS OR MORE. TURN
REPEAT "INITIAL START-UP
™ CONTROLLER
AND NOTE LEDs
YES
™ CONTROLLER. SET VOLT/
CONNECTOR).
OFF IGNITION
PROCEDURE"
NO
REPLACE EC-17
CONTROLLER
™