E0165-03-Ccm2 5V Ref Voltage 3 Shorted To High Source (A.50.A.91.82 - G.30.B.54) - New Holland CX720 Repair Manual

E0165-03-CCM2 5V Ref Voltage 3 Shorted To High Source
(A.50.A.91.82 - G.30.B.54)
E0165-03 - CCM2 5V Ref Voltage 3 Shorted To High Source
Cause:
The CCM2 5 V Ref Voltage 3 circuit is shorted to a higher than normal source.
Possible failure modes:
1. Supply wiring shorted to a high source.
2. Controller internal failure (internal regulator failure).
Solution:
1. Enter the InfoView monitor - "Diagnose info" screen.
Select "Supply" sub menu.
Select "CCM2 5V Ref Voltage 3" and check voltage range.
The proper voltage supply is 4.5 - 5.5 volts
A. If the voltage reading is high out of range 5.5 volts or more 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 the troubleshooting at step 6.
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 high. Disconnect connector X009, pin G.
A. If the voltage decreases to 4.5 - 5.5 volts the short is in wire 440 pink. Find and repair the short.
B. If the voltage remains high on InfoView monitor continue with Step 3.
3. The voltage reading on the InfoView monitor is high. Disconnect connector X010, pin 13.
A. If the voltage decreases to 4.5 - 5.5 volts the short is in wire 463 pink.
B. If the voltage remains high on InfoView monitor continue with Step 4.
4. The voltage reading on the InfoView monitor is high. Disconnect connector X011, pin D.
A. If the voltage decreases to 4.5 - 5.5 volts, the short is on wire 486 pink.
B. If the voltage remains high on InfoView monitor continue with Step 5.
5. Disconnect connector X016 J2 and check for the short circuit between connector X016 pin J2-31 and all the
other pins in connector X016 J2.
A. If continuity is found, find and repair the short circuit.
B. If no continuity is found, replace the CCM2 control unit.
6. Operate the machine while monitoring InfoView monitor.
A. If no low out of range readings are indicated, erase the fault code and continue operation
DISTRIBUTION SYSTEMS - ELECTRONIC SYSTEM
A.50.A / 96
2 4/7/2006