14
connected. If mid axle speed sensors are not
detected, the EC-17
™
controller will default to a four
sensor configuration. (Two front and two rear)
B. Electronic Engine Control: On units manufactured
prior to mid-year 2000, if the EC-17
™
controller is
connected to the control module of an electronic
engine, the torque limiting and differential braking
feature of ATC will be activated when the traction
enable/disable switch is toggled prior to self
configuration. After mid-year 2000, the electronic
engine must transmit the throttle position via the
J1922 or J1939 serial link for ATC to be activated
during wheel spin.
C. Antilock Traction Relay Valve: If the solenoid
assembly in the ATR
™
valve is connected to the
EC-17
™
controller, the differential braking feature of
traction control will be activated during the self
configuring process.
D. Traction Disable Switch: The traction disable
switch must be toggled prior the self configuration
process.
2. No method is available to disable the self configuration
feature.
3. Due to the extended period of time the magnet must be
held on the RESET to initiate the self configuration
process (20 seconds), it is unlikely that a self
configuration would occur accidentally.
4. Basic, four speed sensor, antilock operation can not be
removed during the self configuration process. This is a
minimum configuration for all EC-17
™
controllers.
5. If a speed sensor is connected to either wheel on the
mid axle, the EC-17
™
controllers will configure for six
sensors. If no mid axle speed sensor is detected, the
EC-17
™
controller will configure for four sensors. Any
disconnected speed sensor(s) will register as a failure
on the diagnostic display at the end of the EC-17
™
controller self test.
6. All or part of traction control can be lost during self
configuration by;
A. Not connecting one of the wire harnesses (engine
control module for torque limiting and ATR
™
valve
solenoid for differential braking).
B. A missing or inoperative traction control enable
disable switch.
C. Not toggling the traction control enable/disable switch
in the “traction enabled” after power up, but prior to
the self configuration. The operator can tell that the
traction features are lost by noting the absence of
the traction lamp flash upon power up. The operator
should note the flashing of the antilock condition
lamp, and the traction lamp if traction equipped, upon
every power up. Observing the dash lamps is one
method the operator has to verify the system
operation.
7. The EC-17
™
controller can be reprogrammed up to 10,000
times.
8. When a replacement EC-17
™
controller is installed on a
vehicle that does not have one or more of the
preprogrammed features, a failure will be registered on
the dash lamp(s) and on the EC-17
™
controller diagnostic
display. For this reason it is necessary to perform the
self configuring procedure.
9. Some configuration information is available by observing
the reaction of the dash condition lamps on vehicles
configured with traction control and equipped with the
self configuring EC-17
™
controller. When the ignition is
switched ON, the EC-17
™
controller self test is begun.
During the self test the dash lamps will flash on and off
together as indicated in the chart, depending upon the
type and amount of traction control configured into the
EC-17
™
controller. Note: For more information on this
subject see the TROUBLESHOOTING section of this
document.
Self Configuration Process
In order to successfully complete the self configuring process
follow the steps presented.
1. Connect all antilock and traction control wire harnesses.
Refer to the schematic in Figure 5. Make certain that all
the speed sensors present on the vehicle are connected
(H2, H3, J1, J2 on the 30 pin connector and E2, E3, F2,
F3, B2, B3, C2, C3 on the 18 pin connector). If the vehicle
has an electronic engine and traction control torque
limiting is desired the engine control module must be
connected (B2 and B3 on the 30 pin connector for J1922
or C3, D2, and D3 on the 30 pin connector for J1939). If
the vehicle is equipped with either an ATR-1
™
or ATR-2
™
valve, the solenoid connection must be made to the
EC-17
™
controller (D2 and D3 on the 18 pin connector)
in order to obtain traction control differential braking.
2. If the vehicle is to be configured with traction control, it
must have a traction control dash lamp and a traction
control enable/disable switch. Both the lamp and switch
must be functional.
3. Turn the ignition ON, toggle the traction control enable/
disable switch back and forth then hold a magnet on
the RESET position of the EC-17
™
controller diagnostic
display until the LEDs begin to flash then remove the
magnet. If the magnet is not removed during the LED
flashing a second self configuration may be initiated.
The magnet may have to be held on the RESET for as
long as 20 seconds. When the self configuration process
is complete the EC-17
™
controller will automatically go
through a self test. During the self test the diagnostic
display will indicate the new configuration as described
under the section entitled EC-17
™
Controller
Configuration Display. Note: If the EC-17
™
controller is
