Section 9 --- Electrical Systems - Chassis
The Executive 2005
394
STEERING COLUMN & SMART WHEEL
The steering wheel system consists of electronic mod-
ules enclosed in the steering wheel and the Master
Controller typically located in the front run box. Four
wires utilizing a "clock-spring" connector in the steering
column accomplish communication between the steering
wheel and the Master Controller. The Master Controller
decodes the signal for the closed switch and operates
the corresponding outputs for that function. Two addition-
al wires provide power and ground for the steering wheel
backlighting.
The 3 Amp fuse on the Master Controller is for back-
lighting the switch panel. LED draw is approximately 20
mA.
Another function of the smart wheel is the “High Idle”
feature.
Smart Wheel Operation
Smart Wheel Functions and Operational Description:
HORN:
The horn bar on the steering wheel sends the appropriate signal to the Master Controller causing
the HORN output to activate while the switch is pressed.
HEADLAMP FLASH:
When headlights are ON, pressing the switch will turn them off as long as the switch
is pressed. Similarly, when the headlamps are OFF, pressing the switch causes the
headlights to illuminate as long as the switch is pressed.
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