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Sensing system Temperature sensor - Short circuit to B+
(C.20.F.95.90 - G.30.B.54)
AFX8010
E0023-03 - Hydrostat Motor Temperature Sensor
Cause:
The hydrostat motor temperature sensor B-46 is shorted to a high source.
Possible failure modes:
1.
Sensor supply wiring shorted to 12 volts.
2.
Controller internal failure (internal regulator failure).
Solution:
1.
Enter the Universal Display Plus "DIAG" screen. Select the "GROUND DRIVE" sort menu, and select "MTR
TEMP SEN" to check the voltage range. The normal operating voltage range is 0.5 - 4.9 volts.
A.
If the voltage reading is above 5.2 volts, continue with Step 2.
B.
If the voltage reading is within the proper limits, the shorted wire may not be powered up at this time.
Continue with Step 4.
2.
The voltage reading is high. Disconnect the hydrostat motor temperature sensor connector X091.
A.
If the voltage drops to 4.9 - 5.2 volts, the short is in the sensor or sensor wiring. Replace the sensor.
B.
If the voltage remains high, continue with Step 3.
3.
The voltage reading is high. Disconnect the lower frame (LF) harness from the front frame (FF) harness at
connector X023.
A.
If the voltage drops to 4.9 - 5.2 volts, the short is in the lower frame (LF) harness between connector
X023 and connector X091 wire 773 yellow. Locate the short and repair.
B.
If the voltage remains high, the short is in the front frame (FF) harness between connector X023 and
connector X020 J3-33 wire 773 yellow. Locate the short and repair.
4.
Visually inspect the harness and connectors for damage, bent or dislocated pins, corroded terminals or
broken wires.
A.
If no damage is found, erase fault code and continue operation.
Sensing system Temperature sensor - Overview (C.20.F.95.90 -
C.10.A.10)
POWER TRAIN - TRANSMISSION Hydrostatic
10033617A5
9681 1 27/05/2004
C.20.F / 36
1
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