BENDIX EC-13 TRAILER ANTILOCK CONTROL Manual 

5, 5 12 Wheel Speed Connector (to Sensor) Modulator Connector (to Modulator) Trailer Service Air Line Trailer Wiring Harness Connector 3 3 2 1 WS-20 ™ Wheel Speed Sensor TAIL LIGHTS (BRN) BRAKE (RED) LEFT TURN LIGHTS (YLW) POWER (BLUE) MAKER LIGHTS (BLK) GROUND (WHT) Trailer Electri…

4, 4 Solenoid valves contained in the modulator are energized and de-energized by the EC-13 ™ controller in order to modify the brake application. When a solenoid coil is energized its shuttle moves, and depending upon the function of the specifi c solenoid, it either opens…

2, BENDIX EC-13 TRAILER ANTILOCK CONTROL 2 WS-20 ™ WHEEL SPEED SENSOR Reservoir Reservoir SPRING BRAKE SUPPLY (EMERGENCY) LINE CONTROL (SERVICE) LINE TO TRAILER ELECTRICAL CONNECTOR SPRING BRAKE M-12R ™ MODULATOR TRAILER ANTILOCK WIRING HARNESS EC-13 ™ CONTROLLER INFORMATION INPUTS AND COMMAND OUTPUTS GENERAL The EC-13 …

18, 18 Troubleshooting SECTION VI PART B TESTING THE WHEEL SPEED SENSOR REPEAT THE “INITIAL START-UP PROCEDURE”. REPLACE THE EC-13 ™ CONTROLLER YES ARE ANY LED’s ILLUMINATED? YES ARE SAME RED LEDS ILLUMINATED? YES CORRECT RESISTANCE? NO DISCONNECT CONNECTOR AT SPEED SENSOR. INSPECT THE CONN…

12, 12 Troubleshooting SECTION II INSPECTION FOR ILLUMINATED LED’s YES YES GO TO SECTION IV “TESTING FOR POWER TO THE EC-13 ™ CONTROLLER”. NO NO START HERE IS GREEN, VOLT, LED ILLUMINATED? REPLACE THE EC-13 ™ CONTROLLER ARE ANY RED LED’s ILLUMINATED? IS GREEN LED FLASHING NO ARE ANY…

13, 13 Troubleshooting SECTION III INSPECTION FOR ILLUMINATED LEDS NO IS RED “SENS” LED ILLUMINATED? NOTE THE THREE ILLUMINATED LEDS AND GO TO SECTION VI “TESTING THE WHEEL SPEED SENSOR” REPLACE THE EC-13 ™ CONTROLLER AND REPEAT THE “INITIAL START-UP PROCEDURE” YES IS THE…