Specifications

83
Data Parameters Engine Parameters
TORQUE
TORQUE CORR. VALUE DURING SHIFT
TORQUE DIFFERENCE SUM
TORQUE LOSS
Range: __________________________________________________________ variable
Used on EGS, ME10, and ME20 systems. This parameter is an ECU-calculated engine torque
shown in newton-meters (Nm). Display varies according to engine load. The ME-MOTRONIC
engine management uses torque-led control, which means it calculates the internal torque
produced during combustion. This is the physical force produced by gas pressure during the
compression and power strokes. The actual net torque of the engine has to account for friction,
gas transfer losses, and drive power for equipment such as the water pump, alternator, and AC
compressor. The ME program contains the optimal specifications for charge density, injection
duration, and ignition timing for any desired torque. This makes it possible to obtain optimal
emissions and fuel consumption for every operational mode. Operational demands are
prioritized and coordinated individually to use the appropriate control to achieve the specified
torque. Torque based control is possible because the electronic accelerator permits throttle valve
control beyond the pedal value inputs.
TRANSM. OVERLOAD PROTEC. SWITCH
TRANSMISSION OVERLOAD PROTECTION
TRANSMISSION OVERLOAD PROTECTION INTER
TRANSMISSION PROTECTION
Range: __________________________________________________________ ON/OFF
Used on EZ, HFM, ME10, ME20, ME27, and ME28 systems. These parameters show whether or
not the ECU is operating the automatic transmission in an overload protection mode. The display
normally reads OFF and reads ON if transmission overload protection mode is active. In
overload mode the ECU disables the torque converter clutch and overdrive.
TRANSMISSION SHIFT DELAY
TRANSMISSION UPSHIFT DELAY
UPSHIFT DELAY 1
Range: __________________________________________________________ ON/OFF
Used on LH, HFM, and ME20 systems. This parameter indicates whether the ECU shift delay
program is active. The display reads OFF during normal operation, and ON if the ECU is
delaying upshifts to more rapidly heat up the catalytic converter after a cold startup.
TRIP SINCE ERASING FAULT
Range: ___________________________________________________________0 to 255
Used on ME10 systems. This parameter indicates the number of trips since a specified
diagnostic trouble code was erased.
TWC HEATING AT IDLE
Range: __________________________________________________________ ON/OFF
Used on HFM, ME10, and ME20 systems. This parameter indicates the state of the three-way
catalyst (TWC) heating circuit. During normal operation the Scanner should display OFF, and at
a cold startup or during prolonged idle, the Scanner should display ON. The TWC contains an
electric heating element to help it maintain optimal temperature for reducing emissions. The ECU
energizes the heater if internal temperatures drop below a preset threshold during prolonged
idle. The heater is also energized at cold startup when the catalytic converter temperature is
below 86°F (30°C). The ECU activates the electric TWC heater for a maximum of 50 seconds
during one cycle.