Specifications

Data Parameters Engine Parameters

ACTUAL PRESSURE DISTRIB.PIPE

Range: _____________________________________________________0 to 1000 mbar

Used on ERE/EVE/ASF (IFI Diesel)) systems with turbocharged engines. This parameter

displays the actual pressure in the distribution pipe or intake manifold, indicating boost pressure.

This parameter relies on the intake manifold pressure sensor (MAP).

ACTUAL SLIDE VALVE ACTUATOR

Range: __________________________________________________________ variable

Used on ERE/EVE/ASF (IFI Diesel)) systems. This parameter displays the slide valve actuator

position in millimeters (mm).

ACTUAL VALUE POT.METER VOLTAGE

Range: _________________________________________________________ 0 to 5.0 V

Used on HFM systems. The HFM system does not use a drive-by-wire electronic throttle

actuator. Instead, it uses a mechanical throttle linkage linked to an electronic actuator located at

the throttle body. The actuator has an integral clutch mechanism that overrides the mechanical

linkage under certain conditions. The system is used to control idle, cruise control and

Accelerator Slip Regulation controlled by the Electronic Accelerator/Cruise Control/Idle Speed

Control (EA/CC/ISC) module. The voltage range varies depending on operating conditions.

Higher voltages indicate a greater throttle opening.

ACTUATOR ACT.VALUE POT.METER R1

ACTUATOR ACT.VALUE POT.METER R2

ACTUATOR SIGNAL 1

ACTUATOR SIGNAL 2

Range: _________________________________________________________ 0 to 5.0 V

Used on ME10 and ME20 systems. This drive-by-wire system has no mechanical throttle

linkage. An electronic actuator controls the throttle valve under different operating conditions to

regulate idle speed, cruise control operation, driving on the basis of accelerator position, traction

control (Acceleration Slip Regulation), Electronic Stability Program (ESP) and emergency

running. The position of the accelerator pedal is detected by two potentiometers that transmit

input signals to the ECU. Based on these signals, the ECU in turn controls the electronic throttle

actuator. One potentiometer is in the pedal value sensor and the other one is in the electronic

actuator. The potentiometer in the electronic throttle actuator supplies a reference value for a

plausibility check. In an emergency, if one potentiometer fails, the system switches over to the

second one. A quick plausibility check is to add both actuator signal readings (R1 and R2 or

SIGNAL 1 and SIGNAL 2) together at various throttle positions. They should always add up the

same value, usually between 4.5 to 4.9 volts.

ACTUATOR OUTPUT VALUE

Range: ___________________________________________________________0 to 255

Used on HFM systems. This parameter is the count value of the stepper motor type electronic

throttle actuator. The HFM system does not use a drive-by-wire electronic throttle actuator.

Instead, a mechanical throttle linkage attaches to an electronic actuator located at the throttle

body. The actuator uses an integral clutch mechanism that overrides the mechanical linkage

under certain conditions. The system regulates idle, cruise control and Accelerator Slip

Regulation, and is controlled by the Electronic accelerator/Cruise Control/Idle Speed Control

(EA/CC/ISC) module. Voltage varies depending on operating conditions. The higher the count,

the greater the throttle actuator is opening the throttle valve.