Bendix Commercial Vehicle Systems EC-15 ANTILOCK CONTROLLER ASSY 4/08 - Manual (Page 11)

11
LED o FRONT Red LED
LED o MID Red LED (SEE NOTE BELOW)
LED o REAR Red LED
LED o RIGHT Red LED
LED o LEFT Red LED
LED o MOD Red LED
LED o SENS Red LED
LED o ECU Red LED
LED o VOLT Green LED
III RESET No LED
NOTE: The MID LED shown in the chart above is not used
in the diagnostic process for the EC-15 ™ controller
however it will light when a magnet is placed on the
RESET switch in the diagnostic window.
“FRONT” LED
This Red LED illuminates and latches ON in order to indicate
the location of a problem component or its wiring. It will
light in conjunction with either the RIGHT or LEFT LED and
the MOD or SENS LED.
“MID” LED
This Red LED is not used in troubleshooting the EC-15 ™
controller and should light only when a magnet is held on
the RESET switch.
“REAR” LED
This Red LED illuminates and latches ON in order to indicate
the location of a problem component or its wiring. It will light
in conjunction with either the RIGHT or LEFT LED and the
MOD or SENS LED.
“RIGHT” LED
This Red LED illuminates and latches ON in order to indicate
the location of a problem component or its wiring. It will light
in conjunction with either the FRONT or REAR LED and the
MOD or SENS LED.
“LEFT” LED
This Red LED illuminates and latches ON in order to indicate
the location of a problem component or its wiring. It will light
in conjunction with either the FRONT or REAR LED and the
MOD or SENS LED.
“MOD” LED
This Red LED illuminates and latches ON to indicate a
permanent or intermittent open or short circuit in the
solenoids of one of the four modulators or the wiring
connecting it to the system.
“SENS” LED
This Red LED illuminates and latches ON to indicate
permanent or intermittent failure. The failures indicated are;
open or shorted wheel speed sensor, open or shorted wheel
speed sensor wiring, wheel speed signal not present or
does not conform to design criteria.
“ECU” LED
This Red LED, when illuminated, indicates that the controller
itself has failed. It is latched ON for all EC-15
™ controller
failures except low voltage. For voltages less than 9VDC,
the LED illuminates to indicate the controller is inoperative,
however when the voltage again exceeds 9VDC the LED will
go OUT by itself.
“VOLT” LED
This Green LED illuminates and remains ON during vehicle
operation to indicate that vehicle power is reaching the
controller. If vehicle power is out of range for proper
operation (below 11 vdc or above 17 vdc) this LED will flash
until power is brought into range.
“RESET”
Beneath the RESET area of the window display is a
magnetically sensitive switch that is used to reset the
diagnostic system. The device will respond to a magnet
which has strength sufficient to lift a three (3) ounce weight.
Holding a magnet against the RESET will cause all LEDs to
light during the time the magnet is against it.
FRONT
MID
REAR
RIGHT
LEFT
MOD
SENS
ECU
VOLT
RESET
EC-15 ™ CONTROLLER
DIAGNOSTIC WINDOW