BENDIX M-21-M-22 ANTILOCK MOD ASSY Manual de servicio descargar pdf (Pagina 23)

When the controller senses an erroneous condition, it stores the condition in memory,

disables the antilock or traction function, and illuminates the dash-mounted condition

lamp and appropriate diagnostic LEDs on the EC-16. The failure condition is truly

stored and is not cleared by loss of power to the EC-16. The LEDs will re-light when

power is restored, and remain illuminated until the failure is corrected. After the actual

problem is corrected, maintenance personnel can clear or reset the EC-16 diagnostics

by holding a small magnet over the RESET point on the diagnostic display.

DIAGNOSTIC LEDS

There are ten LEDs plus a magnetically actuated reset switch in the EC-16 diagnostic

display. The first six LEDs locate a problem to a specific area of the vehicle, and the

next three indicate the problem component or is wiring. The LEDs are software-driven

and are either ON or OFF, depending on their monitor function. (Note: right and left,

front and rear are determined from the driver’s seat.)

FRT Red LED

MID Red LED (See note)

RER Red LED

RHT Red LED

LFT Red LED

TRC Red LED

MOD Red LED

SEN Red LED

ECU Red LED

VLT Green LED

RESET + No LED

NOTE: The MID LED is used with some but not all vehicles. When six speed sen-

sors are not installed, this LED is not used in the diagnostic process. However, it

will light when a magnet is placed on the RESET switch in the diagnostic display.

“RESET”

Beneath the RESET area of the 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. Momentarily holding a magnet

against the RESET will cause ALL LEDs to light during the time the magnet is against

it. Holding a magnet against the RESET longer than 10-20 seconds will cause the EC-

16 to initiate the self-configuration feature.

EC-16 CONTROLLER CONFIGURATION

General

All EC-16 controllers manufactured on or after August 1, 1995 incorporate the

self-confining feature. New replacement EC-16 controllers will be provided factory

pre-programmed for 6 speed sensor inputs and both the differential braking and

torque-limiting features for traction control.

Air Brake System

Revised 11/15/99

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BENDIX M-21-M-22 ANTILOCK MOD ASSY Manual de servicio Pagina 23