FREE ALLISON DOC Software: Clutch Test on ALLISON Transmission

Clutch Test

Figure 1.1 - Clutch Test (4th Gen/4700OFS)

Clutch Test Enabled

For Allison 5th Gen Control systems (excluding CEC5), 4th Gen Control systems (excluding CEC3) and 1000/2000 (Allison Pre-4th Gen Control) systems, it displays the Clutch Test floating tool bar.
The Clutch Test Enabled allows the user to command any forward range by selecting it from a floating window (reverse is not a selectable range).

#To Initiate the Clutch Test

1). Connect ALLISON Transmission using ALLISON DOC Software. Read More: How to Connecting ALLISON Transmission using ALLISON DOC Software.

2). Select the Action Request drop-down menu.

3). Click on the Clutch Test Enabled menu item. The Clutch Test window displays.

Figure 1.2 - Action Request (Clutch Test Enabled)

→A warning message, similar to the following displays (5th Gen).

Figure 1.3 - Warning Message

→Please comply with displayed conditions and click OK to acknowledge (5th Gen).

4). Select Drive/D (for the 1000/2000 Product Families), or the highest range (for the 3000/4000 or TC10 Product Families) from the Shift Selector. At this point, 1st range is attained and highlighted on the Clutch Test floating window.

→Click the Data Monitor menu. Read More: Data Monitor on ALLISON DOC Software (ALLISON Transmission).

Figure 1.4 - Clutch Test (4th Gen/ 1st range)

5). If desired, click on the range you want the Transmission to attain.

Figure 1.5 - Clutch Test (4th Gen/ 2nd range)

Figure 1.6 - Clutch Test (5th Gen/ 2nd range)

Figure 1.7 - Clutch Test (4th Gen/ 3rd range)

Figure 1.8 - Clutch Test (5th Gen/ 3rd range)

Figure 1.9 - Clutch Test (4th Gen/ 4th range)

Figure 2.1 - Clutch Test (5th Gen/ 4th range)

On Shift Selector display also will change/commanded the gear (1st - 5th gear), depending on the range while perform Clutch Test through Allison DOC.

Figure 2.2 - 4th Range (5th Gear on Shift Selector)

6). If desired, click the Full Main Pressure button to turn on Main Mod Solenoid.

→The Full Main Pressure button is highlighted in the Clutch Test window and the value of "TEST" is displayed for Main Mod Solenoid Commanded Pressure in the Data Monitor. Read More: Data Monitor on ALLISON DOC Software (ALLISON Transmission).

Figure 2.3 - Main Mod Solenoid Commanded Pressure (TEST)

→Clicking this button, to toggle Full Main Pressure back, restores real TCM value for the Main Mod Solenoid Commanded Pressure data value in the Data Monitor view.

→A message displays if Allison DOC cannot establish Full Main Pressure.

Figure 2.4 - Full Main Pressure failed (Conditions not correct)

#Note:

→While a specific gear is being selected and maintained by the Clutch Test mode, the TCM will command the TCC ON and OFF, depending on the Transmission operational conditions (i.e. being in Clutch Test mode does not guarantee the constant application of the TCC). The TCM is always in control of the TCC application.

→The Transmission will maintain the selected range until the TCM determines that the operational conditions constitute a risk to the Transmission hardware. At this point, the TCM will command an up or downshift to eliminate that condition of risk. The service tool command (i.e Clutch Test) cannot force the Transmission to stay in a specific range under these circumstances.

→A message displays if Allison DOC cannot attain the desired clutch gear - Traversing the selected gear range failed.

Figure 2.5 - The Commanded Gear did not change

Figure 2.6 - Engine running and vehicle speed too high

Solenoid Test on ALLISON Transmission using ALLISON DOC Software

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