Bendix Commercial Vehicle Systems EC-15 ANTILOCK CONTROLLER ASSY 4/08 - Manual (Page 19)

19
ARE RESISTANCE
VALUES CORRECT?
REPEAT “INITIAL START-UP
PROCEDURE”. IF THIS
TEST STEP HAS REPEATED
TWICE - REPLACE THE
EC-15
™ CONTROLLER.
INSPECT CONNECTOR AND
RECONNECT TO EC-15
™
CONTROLLER. TURN IGNITION ON
AND PASS MAGNET OVER
RESET ON EC-15
™ CONTROLLER.
NOTE REACTION OF RED LEDS.
PROBE CONNECTOR WITH VOLT/OHM METER AND NOTE
THAT PROPER RESISTANCE VALUES ARE OBTAINED FOR
MODULATOR BEING TESTED. FIGS. 7 AND 8. RESISTANCE
VALUES HERE FOR BENDIX
® M-21 ™ MODULATOR (FIG. 5).
HOLD TO SOURCE: READ 3.5 TO 5 OHMS
EXHAUST TO SOURCE: READ 3.5 TO 5 OHMS
EXHAUST TO HOLD: READ 7 TO 10 OHMS
SOURCE TO BATTERY POWER: NO CONTINUITY
SOURCE TO GROUND: NO CONTINUITY
NOTE: SOURCE TO BATTERY TEST NOT REQUIRED FOR
CONNECTOR 2, (REAR) DEUTSCH CONNECTOR FIGURE 7.
TEST REAR MODULATOR ON
OPPOSITE SIDE OF VEHICLE GO
TO BEGINNING THIS SECTION
(VI) AND RETEST
TURN IGNITION OFF. REFER TO
FIGURES 7 AND 8. DISCONNECT
WIRE HARNESS CONNECTOR
FROM EC-15
™ CONTROLLER.
YES
FRONT OR REAR
MODULATOR?
GO TO SECTION VI B AND
CONTINUE TESTING
NO
REPLACE EC-15 ™
CONTROLLER
IF FAILURE PERSISTS, REPLACE
THE EC-15
™ CONTROLLER.
ARE ANY RED LED’S
ILLUMINATED?
GO TO SECTION IV
“INSPECTION FOR
ILLUMINATED RED
LEDS” AND RETEST.
TROUBLESHOOTING
SECTION VI A - TESTING THE MODULATOR
SAME RED LED’S
ILLUMINATED?
START HERE