Specifications

90
Data Parameters Transmission Parameters
grade. The transmission control module (TCM) relies on this calculated value to make shift
adjustments. While the vehicle drives unloaded on level ground with a zero percent grade the
value should be between -2.5 and 2.5 percent.
HOLD GEAR
Range: __________________________________________________________ ON/OFF
Used on ME10 and ME20 systems. This parameter indicates whether the ECU is holding the
transmission in a certain gear during high-load driving, such as hill climbing. This parameter
represents an ECU cruise control input to the transmission control module (TCM). ON means a
gear is being held.
INCREASED MODULATING PRESS.STATUS
Range: _________________________________________________________ 0 to 100%
Used on the EGS system. This parameter displays the command state of the modulated
pressure regulating solenoid valve in percentage. Modulating pressure influences the amount of
the working pressure, and is dependent on engine load. Increased modulated pressure acts on
the working pressure to the overlap control valves, and together with the shift pressure,
determines the regulated pressure at the pressure overlap control valve.
The electronic transmission controller (ETC) regulates modulated pressure as needed for shift
timing. This assures consistent shifting and increases transmission life. As transmission
components wear, shift overlap time increases. By adjusting pressure, the ETC compensates for
increasing shift overlap times.
INDUCED TORQUE(Nm)
Range: ______________________________________________________ not available
Used on the EGS system. This parameter indicates that the control module is controlling engine
torque by changing spark, or injector pulse, or both, to protect the transmission.
KICK DOWN
KICK DOWN SWITCH
Range: __________________________________________________________ ON/OFF
Used on EAG, EGS, ME27, and ME28 systems. These parameters indicate if the kickdown
switch had been activated. ON means the switch is depressed.
LIMP-HOME
Range: __________________________________________________________ YES/NO
Used on EGS systems. This parameter indicates if the ECU or electronic transmission control
module (ETC) initiated the limp-home mode. A fault within the ME system, sequential fuel
injection (SFI) system, traction system, an electrical transmission failure, or a mechanical
transmission failure may cause the ECU or ETC to engage limp-home mode. YES means that
the limp-home mode is engaged.
When you suspect a transmission electrical failure caused the limp-home mode to engage, look
for the following conditions for confirmation:
• The last successful gearshift remains engaged until the ignition key is cycled;
• If the transmission is in 2nd or reverse, after the key is cycled, the torque converter lockup
clutch shuts off while modulating and shift pressures rise to their maximum values.
When you suspect a transmission mechanical failure caused the limp-home mode to engage,
look for the following condition for confirmation:
• After the mechanical fault occurs, the transmission resets itself to 3rd gear. Cycling the
ignition switch causes the transmission to shift normally until the ETC detects another fault.
The transmission again resets itself to third gear, repeating the same cycle.