Self-Study Program

40
The accelerator position sender transmits the
driver inputs to the Motronic.
Subsystems of the Motronic
The accelerator position sender transmits to
the Motronic an analogue signal correspon-
ding to the accelerator pedal position. To
ensure the functional reliability of the electro-
nic throttle control, the accelerator position
sender has two independent potentiometers
G79 and G185.
The characteristics are different (refer to dia-
gram).
The control unit monitors the function and
plausibility of the two senders G79 and G185.
If a sender fails, the other sender acts as a
back-up.
Resistance in Ω
Accelerator pedal travel
G79
G185
LHD
SSP207/98
SSP207/102
The electronic throttle control function is used
to reduce and increase torque without adver-
sely affecting the exhaust emission values.
Accelerator position senders G79
and G185
• Traction control
• Engine speed limitation
• Speed limitation
• Power output limitation
• Cruise control system
• Driving dynamics control systems
Torque reduction Torque increase
• Speed control
• Engine braking control
• Dash pot function
• Idling control
• Driving dynamics control systems
Module housing
Housing cover
with sensors