New Holland CX720 Repair Manual page 3506

E0670-07-CSW Concave Clear Decr. Mechanical Out of Range
(K.40.B.05.82 - G.30.C.24)
E0670-07 - CSW Concave Clear Decr. Mechanical Out of Range
Cause:
The Right Hand Module (RHM) has detected that the Console Switch (CSW) Concave Clearance Decrease circuit
voltage is >3.500 volts since power up.
Possible failure modes:
1. The CSW Concave Clearance Decrease circuit is shorted to >3.500 volts .
2. RHM internal failure.
3. The Concave Clearance switch S-16(DE) is stuck or shorted to >3.500 volts .
Solution:
1. Verify the fault is present. Enter the Infoview monitor - "Diagnose info" screen, "Console" sub menu. Select
"CSW Concave Clear Decr." and observe the voltage.
The normal operating range for the CSW Concave Clearance Decrease circuit is 0.5 - 12.0 volts .
Note that the Infoview monitor is limited to 0.0 - 5.0 volts .
A. If the voltage reading is >3.500 volts , continue with Step 2.
B. If the voltage reading is within the proper limits, the fault may be intermittent. Continue troubleshooting at
Step 5.
2. Verify the RHM is good. Turn off the ignition switch. Disconnect the Right Console Harness connector X030
. Using the proper tool, remove pin 8 wire 346 yellow from X030 . With the wire removed from the connector,
reconnect X030 . Turn the ignition back on and recheck the CSW Concave Decr. voltage.
A. If the voltage now reads <3.500 volts , the RHM is good. Continue troubleshooting at Step 3.
B. If the voltage is still >3.500 volts , then the fault is in the RHM. Reinstall the wire removed for troubleshoot-
ing. Reload the system software to see if the fault code clears. If the fault is still present after reloading
the software, replace the RHM. Continue troubleshooting at Step 5.
3. Verify the Concave Clearance switch S-16(DE) is good. Using a voltmeter, measure the voltage at Concave
Clearance switch S-16 connector X044 pin 1. While observing the voltage reading, operate the Concave Clear-
ance switch S-16(DE).
A. If the voltage reading varies from <3.500 - 12.0 volts, then the switch is working properly. Continue trou-
bleshooting at Step 4.
B. If the voltage never reads <3.500 volts , turn off the ignition switch. Disconnect Concave Clearance switch
S-16 connector X044 . Using the proper tool, remove pin 1 wire 346 yellow from X044 . With the wire
removed from the connector, reconnect X044 . Turn the ignition back on and recheck the voltage reading.
If the voltage reading still does not drop to <3.500 volts , reinstall the wire removed for troubleshooting.
Replace Concave Clearance switch S-16. Continue troubleshooting at Step 5.
4. Verify circuit 346 yellow is good. Inspect for a short to another wire between Right Console Harness connector
X030 pin 8 and Front Switch Panel A-13 connector X044 pin 1.
A. If the circuit checks good, continue troubleshooting at Step 5.
B. Locate the short. Repair the shorted wiring. Continue troubleshooting at Step 5.
5. Visually inspect the harness and connectors for damage, bent or dislocated pins, broken or pinched wires.
A. Repair any damage found during visual inspection.
B. If no damage is found, erase the fault code and continue operation.
Series 1348 and above
CROP PROCESSING - THRESHING Conventional threshing
2 4/7/2006
K.40.B / 68