Bendix Commercial Vehicle Systems EC-16 ANTILOCK CONTROLLER 4/08 - Manual (Page 23)

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SECTION VI B - TESTING THE MODULATOR
GO TO MODULATOR, INSPECT WIRING CONNECTOR.
DISCONNECT CONNECTOR AND TEST RESISTANCE
BETWEEN PINS ON MODULATOR. RESISTANCE
VALUES FOR BENDIX ® M-22 ™ MODULATOR.
HOLD TO COMMON: READ 3.5 TO 5 OHMS
EXHAUST TO COMMON: READ 3.5 TO 5 OHMS
EXHAUST TO HOLD: READ 7 TO 10 OHMS
TEST EACH PIN TO VEHICLE GROUND AND NOTE NO
CONTINUITY.
REPLACE THE MODULATOR.
YES
REPEAT THE “INITIAL
START-UP PROCEDURE”
REPAIR OR REPLACE MODU-
LATOR WIRE HARNESS.
GO TO SECTION IV “INSPECTION FOR
ILLUMINATED LEDs” AND RETEST.
NO
YES
YES
NO
NO
EXHAUST COMMON HOLD
CONNECTOR ON M-22 ™ MODULATOR.
RECONNECT CONNECTOR TO MODULATOR.
TURN IGNITION ON AND PASS MAGNET OVER
RESET ON EC-16 ™ CONTROLLER. NOTE
REACTION OF RED LEDs.
RESISTANCE READINGS
CORRECT?
START HERE FROM
SECTION VI A
ARE ANY RED LEDs
ILLUMINATED?
SAME RED LEDs
ILLUMINATED?