Case IH AFX8010 Repair Manual page 1323

Sensing system Shift position sensor - Overview (C.20.B.95.81 -
C.10.A.10)
The transmission shift position sensor B-37 (1) is located on the top rear of the transmission housing, directly
above the shifting disc. The transmission shift position sensor contains 5 position sensors internally, arranged in a
horseshoe pattern, which are used to determine the position of the shifting disc. The shifting disc has a pin that is
positioned to travel under the transmission shift position sensor as the shifting disc is rotated to select a gear in the
transmission. The transmission shift position sensor is connected (X093) to the lower frame (LF) harness at (2),
and provides an input to the CCM2 module at connector X017 as follows:
Gear
1
2
N
3
4
When a gear can not be engaged because of either mechanical reason or failure of one of the internal sensors in
the transmission shift position sensor B-37, the software in CCM2 will allow another gear to be selected.
NOTE: Refer to the Operator's manual for information on the manual gear shifting procedure.
The transmission shift position sensor B-37 circuit is also monitored by the CCM2 module; in the event that a fault
occurs with one of the internal sensors or the wiring to the sensor, a fault code will be displayed to the operator.
E0128-03 - Trans Shift Position N Sensor
E0128-04 - Trans Shift Position N Sensor
E0128-05 - Trans Shift Position N Sensor
E0129-03 - Trans Shift Position 3 Sensor
E0129-04 - Trans Shift Position 3 Sensor
E0129-05 - Trans Shift Position 3 Sensor
E0130-03 - Trans Shift Position 2 Sensor
E0130-04 - Trans Shift Position 2 Sensor
E0130-05 - Trans Shift Position 2 Sensor
E0131-03 - Trans Shift Position 1 Sensor
E0131-04 - Trans Shift Position 1 Sensor
E0131-05 - Trans Shift Position 1 Sensor
E0132-03 - Trans Shift Position 4 Sensor
E0132-04 - Trans Shift Position 4 Sensor
E0132-05 - Trans Shift Position 4 Sensor
The inputs from the transmission shift position sensor B-37 supports several functions, such as:
selected gear readout on display.
•
when shifting gears in the transmission, the transmission shift motor M-02 will stop rotating the shifting disc
•
when the selected gear is engaged, as determined by the shift position sensor.
CCM2 limits the reverse speed of the combine when the shift position sensor indicates engagement of
•
3rd or 4th gear.
POWER TRAIN - TRANSMISSION Mechanical
10004664A5
J3-36
J3-37
J3-28
J3-38
J3-27
9680 1 27/05/2004
C.20.B / 133
1
Pin Number