Bendix Commercial Vehicle Systems EC-15 ANTILOCK CONTROLLER ASSY 4/08 - Manual (Page 22)

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IGNITION OFF. REMOVE CONNECTOR(S) FROM EC-15 ™
CONTROLLER. MEASURE RESISTANCE BETWEEN THE
APPROPRIATE SPEED SIGNAL (+) AND SIGNAL RETURN (-).
RESISTANCE FOR BENDIX
® WS-20 ™ SENSOR IS BETWEEN
1500-2500 OHMS. REFER TO VEHICLE MANUAL FOR THE
RESISTANCE VALUES IF OTHER THAN WS-20
™ SENSOR
IS IN USE. (REFER TO FIGURE 7 & 8)
DISCONNECT CONNECTOR AT SPEED SENSOR
INSPECT THE CONNECTOR, THEN CHECK THE
RESISTANCE BETWEEN TWO PINS ON SENSOR.
RESISTANCE BETWEEN 1500-2500 OHMS FOR THE
BENDIX
® WS-20 ™ SPEED SENSOR.
REPLACE THE SENSOR
YES
REPLACE EC-15 ™
CONTROLLER
NO
TROUBLESHOOTING
SECTION VI PART B - TESTING THE WHEEL SPEED SENSOR
ARE ANY LED’S ILLUMINATED?
CORRECT RESISTANCE?
START HERE FROM
SECTION VII PART A
NO
YES
GO TO SECTION III “INSPECTION
FOR ILLUMINATED LEDS”
REPAIR OR REPLACE SPEED
SENSOR WIRING HARNESS.
ARE SAME RED LED’S ILLUMINATED?
REPEAT THE “INITIAL
START-UP PROCEDURE”
NO
YES
NO
YES
SAME LED’S ILLUMINATED?
GO TO SECTION III “INSPECTION
FOR ILLUMINATED LEDS”.
NO
YES
RECONNECT CONNECTOR AT SPEED
SENSOR AND EC-15 ™ CONTROLLER
AND DO MAGNETIC RESET. NOTE IF
ANY RED LEDS ARE ILLUMINATED.