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| Illustration 1 | g01150874 |
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Autoshift control (wheel steering) circuit | |
The components of the autoshift control (wheel steering) circuit are the autoshift control switch (wheel steering), the Power Train Electronic Control Module (Power Train ECM), and the transmission control (wheel steering).
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| Illustration 2 | g00989205 |
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Cab (1) Autoshift control switch (wheel steering) (2) MANUAL position (3) AUTOMATIC position | |
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| Illustration 3 | g01146358 |
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Cab (4) Power Train ECM | |
With the key start switch in the ON position, 24 volt power is supplied by the batteries via circuit breaker #9 to the Power Train ECM.
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| Illustration 4 | g00989498 |
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Cab (5) Transmission control (wheel steering) | |
Power Train ECM (4) receives ground signal from transmission control (wheel steering) (5) indicating the gear selected.
When autoshift control switch (wheel steering) (1) is moved to MANUAL position (2), a ground signal is supplied to the Power Train ECM. The Power Train ECM monitors the signal from the transmission control (wheel steering) and determines the gear that is selected by the operator.
When the autoshift control switch (wheel steering) is in AUTOMATIC position (3), a ground signal is supplied to the Power Train ECM. When the signal is received by the Power Train ECM, the Power Train ECM will control the upshift and downshift of gears automatically.
The position of the autoshift control switch (wheel steering) indicates the highest gear which will be selected by the Power Train ECM in automatic mode. The Power Train ECM can be programmed to limit this selection.
Reference: For more information on the autoshift control (wheel steering) refer to Operation and Maintenance Manual, "Autoshift Control (wheel Steering)".