E0288-05-Grain Yield Sensor Line Disconnected (A.50.A.96.95 - G.30.B.50) - New Holland CX720 Repair Manual

E0288-05-Grain Yield Sensor Line Disconnected (A.50.A.96.95 -
G.30.B.50)
E0288-05 - Grain Yield Sensor Line Disconnected
Cause:
The yield sensor (R-05) circuit is open or shorted to ground.
Possible failure modes:
1. Sensor wiring is open or shorted to ground.
2. Controller internal failure (internal regulator failure).
Solution:
1. Enter the Infoview™ monitor - "Diagnose info" screen.
Select "CCM3" or "Precision Farming" sub menu.
Select "Grain Yield Sensor" and check voltage range.
The proper voltage range is 0.1 - 5.2 volts.
A. If the voltage reading is low out of range(0.0 volts), continue with Step 2.
B. If the voltage reading is within the proper limits, continue the troubleshooting at step 4.
NOTE: Visually inspect the wiring harness and connectors. Verify that the connector was fully installed. Inspect
the terminals and wires at the connector for pushed back or corroded terminals or damaged wires. Flex the
harnesses involved to reveal intermittent breaks or shorts in the wiring concerned.
2. The voltage reading on the Infoview™ monitor is low out of range. Disconnect the sensor connector X223. Use
a multimeter to check for continuity between connector X223 pin C and chassis ground.
A. If there is continuity to ground, there is a short to ground in the expansion (EX) harness between connector
X223 pin C and connector X014 pin J3-32 wire 552 yellow. Locate short and repair.
B. If there is no continuity, continue with step 3.
3. Key off. Carefully disconnect connector X014 from the bottom of the CCM3 module. Install a jumper wire to
short connector X223 pin C to ground. Use a multimeter to check continuity between connector X014 pin J3-32
to chassis ground.
A. If there is no continuity, there is an open circuit in the expansion (EX) harness between connector X014
pin J3-32 and connector X223 pin C wire 552 yellow. Locate the open and repair.
B. If there is continuity, there is a fault in the yield sensor. Replace the yield sensor.
4. Operate the machine while monitoring Infoview™ monitor.
A. If no low out of range readings are indicated, erase the fault code and continue operation.
Series 1206-1347
Wiring harness - Electrical schematic frame 19 (A.30.A.88-C.20.E.19)
Series 1348 and above
Wiring harness - Electrical schematic frame 24 (A.30.A.88-C.20.E.24)
DISTRIBUTION SYSTEMS - ELECTRONIC SYSTEM
A.50.A / 143
2 4/7/2006