E0046-03-Ccm1 Battery Voltage Shorted To High Source (A.50.A.91.81 - G.30.B.54) - New Holland CX720 Repair Manual

E0046-03-CCM1 Battery Voltage Shorted To High Source
(A.50.A.91.81 - G.30.B.54)
E0046-03 - CCM1 Battery Voltage Shorted To High Source
Cause:
The circuit is shorted to a higher than normal voltage source.
Possible failure modes:
1. Circuit wiring shorted to high voltage source.
2. Faulty alternator/regulator.
3. Controller internal failure (internal regulator failure).
Solution:
1. Start the Combine engine. Enter the InfoView Monitor - "Diagnose info" screen.
Select "Supply" sub menu.
Select "CCM1 Battery voltage". Increase the engine RPM to high idle (maximum) and check voltage range.
The proper voltage range is 10.0 - 18.0 volts.
A. If the voltage reading is greater than 18 volts, continue with Step 2.
B. If the voltage reading is between 10 - 18 volts, go to Step 5.
2. Shut off the combine engine, and then turn the key switch on again. Enter the InfoView Monitor - "Diagnose
info" screen.
Select "Supply" sub menu.
Select "CCM1 Key switch Voltage" and check voltage range.
The acceptable voltage range for the module is 10 - 18 volts.
A. If the voltage reading is between 10 - 18 volts, the alternator and/or regulator has failed, and is producing
excessive voltage. Refer to Alternator - Testing (A.30.A.82 - G.40.A.20) for additional alternator testing
information.
B. If the voltage reading is greater than 18 volts, continue with Step 3.
3. Turn the key switch off to power down the system. Check the voltage at fuse F39 using a multi-meter.
A. If the voltage reading is greater than 18 volts, then the batteries have been mistakenly connected in series
(7.5 L units), or there is a fault in the wiring of the 24 V starting system (Iveco units). Refer to DISTRIBU-
TION SYSTEMS - Troubleshooting (A.80.A.90 - G.40.A.10) for additional information.
B. If the voltage reading is between 10 - 18 volts, continue with Step 4.
4. Remove the buddy seat and storage bin to gain access to connector X018 on CCM1. Check the voltage at
connector X018 pin J1-1.
A. If the voltage reading is greater than 18 volts, then a high voltage source has been connected to one of
the following wires in the cab main harness.
wire 047 red, fuse F39 to splice in the cab main (CM) harness
wire 052 red, harness splice to CCM1 connector X018, pin J1-1
wire 050 red, harness splice to CCM2 connector X015, pin J1-1
wire 049 red, harness splice to CCM3 connector X012, pin J1-1
wire 051 red, harness splice through connector X001, pin 2 to RHM connector X026, pin 13
wire 057 red, harness splice to InfoView monitor connector X064, pin D
wire 142 red, harness splice to DAM connector X065, pin B
wire 048 red, harness splice through connector X002, pin F to harness splice in cab roof (CR) harness
(Series 1206 to 1281)
wire 831 red, harness splice to DLU connector X159, pin 1 (Series 1206 to 1281)
wire 830 red, harness splice to radio connector X140, pin 2 (Series 1206 to 1281)
DISTRIBUTION SYSTEMS - ELECTRONIC SYSTEM
A.50.A / 92
2 4/7/2006