Bendix Commercial Vehicle Systems EC-13 TRAILER ANTILOCK CONTROL 8/07 - Manual (Page 16)

16
Troubleshooting
SECTION V PART B
TESTING THE MODULATOR
MAGNET HERE
RESETTING
EC-13 ™
CONTROLLER
RESISTANCE IN RANGE?
REPLACE M-12 ™
MODULATOR ASSEMBLY
GO TO SECTION III - “INSPECTION
FOR ILLUMINATED LEDs”
ARE ANY RED LEDs
ILLUMINATED?
REPEAT THE “INITIAL
START-UP PROCEDURE”
ARE THE SAME RED
LEDs ILLUMINATED? REPLACE THE
EC-13 ™ CONTROLLER.
NO
YES
YES
NO
NO
YES
RECONNECT EC-13 ™ CONTROLLER TO
M-12 ™ MODULATOR. TURN IGNITION
ON AND PASS MAGNET OVER
“RESET” ON EC-14 ™ CONTROLLER
AND REMOVE. NOTE REACTION OF
RED LEDS.
START HERE
TURN THE IGNITION OFF. DISCONNECT THE
MODULATOR (M-12 ™ OR M-12R ™ ) CONNECTOR
FROM THE VEHICLE WIRE HARNESS TO EXPOSE
THE THREE PIN CONNECTOR LEADING TO THE
M-12 ™ MODULATOR AND TEST RESISTANCE
BETWEEN THE PINS ON THE
MODULATOR CONNECTOR.
RED TO BLACK 9 TO 12 OHMS
RED TO WHITE 9 TO 12 OHMS
M-12 ™ MODULATOR
WIRE HARNESS
CONNECTOR
BLACK WHITE
RED