Specifications

40
Data Parameters Engine Parameters
BAROMETRIC PRESSURE
ALTITUDE PRESSURE
Range: ________________________________________________0 to 1000, ±100 mbar
AMBIENT PRESSURE
Range: _____________________________________________________ 0 to 1000 kPa)
Barometric Pressure is used on CD12, EAG, EDS, ERE/EVE/ASF (IFI Diesel)), EZ, LH, and
HFM systems. Altitude Pressure and Ambient Pressure are used on SIM4 systems. The ECU
calculates the barometric pressure based on the input signal from the barometric pressure
(BARO) sensor. Readings display in millibar (mbar) or kilopascal (kPa). A typical reading at sea
level is approximately 1000 mbar. Readings decrease as altitude increases.
ASR INTERVENTION
Range: __________________________________________________________ ON/OFF
Used on ME20 systems. This parameter indicates the operating state of the acceleration slip
regulation (ASR), or traction control, system. The display reads ON when ASR is activated and
OFF when it is inactive.
BASIC INJECTION DURATION
Range: ________________________________________________________ 0 to 30 ms
Used on LH systems. This parameter displays the length of time in milliseconds (ms) that the
ECU commands the fuel injectors to remain on. Normal range is approximately 3 to 5 ms at idle.
BATTERY VOLTAGE
Range: __________________________________________________________ 0 to 25 V
Used on ARA/ELR, EDS, ERE/EVE/ASF (IFI Diesel)), EZ, LH, HFM, ME10, ME20, ME27, ME28,
and SIM4 systems. This parameter represents the supply voltage provided by the charging
system through the battery. Although the measurement range is 0 to 25 V, actual readings should
be close to normal regulated charging system voltage with the engine running, typically 12.0 to
15.5 volts.
BOOST PRESSURE
Range: ______________________________________________________ 0 to 1000 kPa
Used on SIM4 systems. This parameter displays the boost pressure. The measurement units
can be changed from kilopascal (kPa) to pounds per square inch (psi).
BOOST PRESSURE CONTROL
Range: __________________________________________________________ ON/OFF
Used on ERE/EVE/ASF (IFI Diesel)) systems. This parameter indicates whether the boost
pressure control is on or off. The boost pressure is controlled by the Inline Fuel Injection (IFI)
control module. Boost is increased (closing the waste gate) when the boost pressure control
valve is closed by the boost pressure control vacuum transducer through the vacuum unit. The
boost pressure transducer is actuated by the control module with variable current and regulates
the boost pressure vacuum unit.
BRAKE LAMP SWITCH VIA CAN
Range: __________________________________________________________ ON/OFF
Used on ERE/EVE/ASF (IFI Diesel)) systems. This parameter indicates whether the parking
brake lamp switch (via the controller area network (CAN) bus) is on or off.
The CAN is a broadcast type of bus. This means that all modules “hear” all transmissions. There
is no way to send a message to just a specific module; all modules invariably pick up all traffic.
However, CAN hardware provides local filtering so each module reacts only to data whose
identifiers are stored in its acceptance list. This very high frequency transmission requires a
“twisted pair” of wires to address electromagnetic interference (EMI) concerns. Two wires also