Specifications

69
Data Parameters Engine Parameters
O2S VOLTAGE AFTER TWC
O2S VOLTAGE AFTER TWC LEFT
O2S VOLTAGE AFTER TWC RIGHT
Range: ______________________________________________________ 0 to 1000 mV
Used on ME10 and ME20 systems. These parameters are the feedback voltage signals
delivered to the ECU by the downstream oxygen sensors (O2S). Normally, with a good catalytic
converter, with engine fully warmed up, and in closed loop operation, the display should show a
steady voltage reading within the operating range.
O2S VOLTAGE
O2S VOLTAGE BEFORE TWC
O2S VOLTAGE BEFORE TWC LEFT
O2S VOLTAGE BEFORE TWC RIGHT
Range: ___________________________________________________ –200 to 1000 mV
Used on LH, ME10 and ME20 systems. These parameters are the feedback voltage delivered to
the ECU by the upstream oxygen sensors (O2S). During normal closed loop operation, the
displayed value should switch rapidly between a low reading (below 450 mV) and a high reading
(above 450 mV).
O2S (LAMBDA) CONTROL AFTER TWC
O2S (LAMBDA) CTRL AFT. TWC LEFT
O2S (LAMBDA) CTRL AFT. TWC RIGHT
Range: ______________________________________________________ not available
Used on ME10 and ME20 systems. These parameters are the outputs in milliseconds (ms) of
lambda control based on the downstream oxygen sensor (O2S) signals. No operation or range
information is available at this time.
OIL LEVEL
Range: __________________________________________________________ variable
Used on ME27, ME28, and SIM4 systems. This parameter displays the oil level in the sump in
millimeters (mm).
OIL LEVEL SWITCH
Range: _______________________________________________________ OK/NOT OK
Used on ERE/EVE/ASF (IFI Diesel)) systems. This parameter indicates the status of the oil level
switch. It should always read OK.
OIL QUALITY
Range: __________________________________________________________1.0 to 4.0
Used on ME27 and ME28 systems. This ECU-calculated parameter evaluates oil condition by
taking into consideration mileage and the number of engine run times since the last oil change.
Typically, the average reading ranges from 2.0 to 2.2.
OIL TEMPERATURE
Range: _________________________________________ –50 to 200°C or –58 to 392°F
Used on ME27, ME28 and SIM4 systems. This parameter monitors engine oil temperature. The
measurement units can be changed from degrees Celsius (°C) to degrees Fahrenheit (°F). The
preset measurement is °C.
ON OFF RATIO/O2S (LAMBDA) CONTROL(%)
Range: ________________________________________________________ 0 to +100%
Used on LH systems. This parameter represents the short-term fuel metering correction required
to maintain a stoichiometric (14.7:1), or 1.0 Lambda, air-fuel ratio. Fuel metering corrections are
based on O2S input signals before the three-way catalyst (TWC). The display is duty cycle. A