Motronic ME 7.1.1
Throttle Position (TP) Sensor G79 andAccelerator Pedal Position Sensor 2 G185
The twoTP sensors are part of the accelerator pedal
module and are contact-free sensors.
G79 and
G185
The ECM detects the driver request from these
sensor signals.
Accelerator Pedal
Signal Utilization
The ECM uses the signals from theThrottle Position
Sensor to calculate the fuel injection volume.
Effects of Signal Failure
If one or both sensors fails, an entry is made in the
DiagnosticTrouble Code (DTC) memory and the error
light for EPC is illuminated. Comfort functions such
360_150
as cruise control or engine drag torque control are
switched off.
Clutch Position Sensor G476
The Clutch Position Sensor G476 is a mechanically
actuated switch located on the clutch pedal. It is only
used on vehicles with manual transmission.
Sensor Cylinder
Clutch Pedal Module
Signal Utilization
The signal is used to control the cruise control and to
control the ignition timing and quantity of fuel when
shifting.
Effects of Signal Failure
If the Clutch Position Sensor fails, the cruise control
cannot be turned on. It also results in driveability
problems, such as engine jerking and increased RPM
when shifting.
G476
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