ENGINE AR 7W7398 - Caterpillar

Illustration 1 g01280811
Autoshift control circuit (STIC steering)The components of the STIC steering autoshift control circuit are the STIC steering autoshift control switch, the Power Train Electronic Control Module (Power Train ECM) and the STIC steering transmission control.
Illustration 2 g03688823
(1) Autoshift control switch (STIC steering) (2) MANUAL position (3) AUTOMATIC position
Illustration 3 g01262319
Operator station (under seat) (4) Power Train ECMWith the key start switch in the ON position, 24 V power is supplied from the batteries to circuit breaker 14. Power from circuit breaker 14 is supplied to Power Train ECM (4).
Illustration 4 g03688825
(5) Transmission control (STIC steering) (6) Upshift switch (7) Transmission direction control switch (8) Downshift switchPower Train ECM (4) receives a ground signal from transmission control (5) indicating the gear and the direction selected.When STIC steering autoshift control switch (1) is moved to MANUAL position (2) a ground signal is supplied to Power Train ECM (4). Power Train ECM (4) monitors the signal from upshift switch (6) and downshift switch (8) to determine the gear that is selected by the operator.When STIC steering autoshift control switch (1) is in AUTOMATIC position (3) a ground signal is supplied to Power Train ECM (4). When the signal is received by Power Train ECM (4), Power Train ECM (4) will control the upshift and downshift of gears automatically.The position of STIC steering autoshift control switch (1) indicates the highest gear which will be selected by Power Train ECM (4) in automatic mode. Power Train ECM (4) can be programmed to limit this selection.ReferenceFor more information on the autoshift control refer to Operation and Maintenance Manual, "Autoshift Control (STIC Steering)".