E0046-04-Ccm1 Battery Voltage Shorted To Low Source (A.50.A.91.81 - G.30.B.53) - New Holland CX720 Repair Manual

E0046-04-CCM1 Battery Voltage Shorted To Low Source
(A.50.A.91.81 - G.30.B.53)
E0046-04 - CCM1 Battery Voltage Shorted To Low Source
Cause:
Low battery voltage to CCM1, or the circuit is shorted to ground.
Possible failure modes:
1. Loose or corroded connections, or damaged wires.
2. Batteries are discharged, and/or alternator/regulator failure.
3. CCM1 supply wiring from fuse F-39 shorted to ground.
NOTE : Check fuse F-39. If a short to ground occurred on this circuit the fuse will have blown.
4. Controller internal failure (internal regulator failure).
Solution:
1. Key switch in "Off" position. Check fuse F-39.
A. If fuse F-39 is OK, continue with Step 6.
B. If the fuse is blown, go to Step 2.
2. Replace the failed fuse F-39.
A. If the fuse is OK, continue with Step 3.
B. If the fuse immediately fails again, a short to ground exists in one of the following wires:
wire 047 red, fuse F-39 to splice in the cab main (CM) harness
wire 052 red, harness splice to CCM1 X018, pin J1-1
wire 050 red, harness splice to CCM2 X015, pin J1-1
wire 049 red, harness splice to CCM3 X012, pin J1-1
wire 051 red, harness splice through X001, pin 2 to RHM X026, pin 13
wire 057 red, harness splice to InfoView monitor X064, pin D
wire 142 red, harness splice to DAM connector X065, pin B
wire 048 red, harness splice through X002, pin F to harness splice in cab roof (CR) harness (Series 1206
- 1281)
wire 831 red, harness splice to DLU X159, pin 1 (Series 1206 - 1281)
wire 830 red, harness splice to radio X140, pin 2 (Series 1206 - 1281)
Visually inspect the cab main and cab roof harnesses for damage, bent or dislocated pins, corroded ter-
minals or broken wires. Locate short and repair.
3. Key switch in "Off" position. Check the voltage at fuse F-39 using a multi-meter.
A. If the voltage reading is between 10 - 18 volts, continue with Step 4.
B. If the voltage reading is less than 10 volts, there is excessive resistance between the batteries and the
cab fuse panel, due to loose or corroded connections, or the batteries have discharged excessively, and
are not capable of supplying the minimum voltage requirement for CCM1. Inspect the wiring from the
batteries to the engine compartment, and from there to the cab. Recharge or replace the batteries.
4. Key switch in "On" position.. Enter the InfoView Monitor - "Diagnose info" screen.
Select "Supply" sub menu.
Select "CCM1 Battery 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, continue with Step 5.
DISTRIBUTION SYSTEMS - ELECTRONIC SYSTEM
A.50.A / 94
2 4/7/2006