28
MOD
RESET
FRT
RER
MID
RHT
LFT
TRC
SEN
ECU
VLT
SECTION IX - TESTING FOR FALSE INDICATION CAUSED BY WHEEL SPEED COMPONENTS
START HERE
NO
YES
RUN VEHICLE AT 7 MPH OR MORE
FOR 10 SECONDS OR MORE. TURN
OFF IGNITION
REPEAT "INITIAL START-UP
PROCEDURE"
TURN THE IGNITION OFF AND REMOVE 18 AND 30 PIN
CONNECTOR FROM EC-17
™
CONTROLLER. SET VOLT/
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
CONNECTOR).
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.
WITH IGNITION ON, HOLD A MAGNET
ON RESET OF EC-17
™
CONTROLLER
AND NOTE LEDs
All LEDs
Illuminated?
Magnet
here
EC-17
™
CONTROLLER
DIAGNOSTIC DISPLAY
ARE ALL LEDs ILLUMINATED?
REPLACE EC-17
™
CONTROLLER
REMOVE MAGNET
