E0011-04-Road Lights Signal Shorted To Low Source (A.40.A.11.83 - G.30.B.53); 1347, Cx880 Series 1408 And Above, Cx880 Series 1348 - 1407, Cx880 Series - New Holland CX720 Repair Manual

E0011-04-Road Lights Signal Shorted To Low Source (A.40.A.11.83
- G.30.B.53)
CX720 Series 1408 and above, CX720 Series 1348 - 1407, CX720 Series 1282 - 1347, CX740 Series 1408 and above, CX740 Series 1348 - 1407, CX740
Series 1282 - 1347, CX760 Series 1408 and above, CX760 Series 1348 - 1407, CX760 Series 1282 - 1347, CX780 Series 1408 and above, CX780 Series
1348 - 1407, CX780 Series 1282 - 1347, CX820 Series 1408 and above, CX820 Series 1348 - 1407, CX820 Series 1282 - 1347, CX840 Series 1408
and above, CX840 Series 1348 - 1407, CX840 Series 1282 - 1347, CX860 Series 1408 and above, CX860 Series 1348 - 1407, CX860 Series 1282

- 1347, CX880 Series 1408 and above, CX880 Series 1348 - 1407, CX880 Series 1282 - 1347

E0011-04 - Road Lights Signal Shorted To Low Source
NOTE: This troubleshooting chart is for CX combines Series 1282 and above.
Cause:
The road light switch (S-26) circuit is shorted to ground.
Possible failure modes:
1. Switch or CCM1 supply wiring shorted to ground.
2. Controller internal failure (internal regulator failure).
Solution:
1. The input to CCM1 for the road light signal is supplied by the "Park" lights output (Pin1) of the road light switch
(S-26).
Enter the InfoView Monitor - "Diagnose info" screen.
Select "Electrical" sub menu.
Select "Road Lights Signal" and check voltage range.
The normal operating range for the road lights signal switch - ON 4.0 - 5.0 volts
The normal operating range for the road lights signal switch - OFF 0.5 - 4.0 volts
A. If the voltage reading is low out of range (< 0.5 V), continue with step 2.
B. If the voltage readings are within the proper limits, the shorted wire may not be powered up at this time.
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 the 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. Check fuse F-51. If a short to ground occurred, the fuse will have failed.
A. If fuse F-51 has failed, go to step 3.
B. If the fuse is OK, continue with step 8.
3. Replace fuse F-51.
A. If fuse F-51 immediately fails, the short to ground is in wire 213 red to road light switch S-26 pin 5 (lights)
or wire 214 red to road light switch S-26 pin 8 (horn). Locate the short and repair.
B. If fuse F-51 is OK, continue with step 4.
4. Turn the Road Light switch S-26 to the "Park" lights position and inspect fuse F-51.
A. If fuse F-51 immediately fails, the short to ground is in one of the following wires:
wire 173 orange from the road light switch S-25 pin 1 to light control relay K-02 pin 5
wire 114 orange, light control relay K-02 pin 5 to pin 1
wire 212 orange, light control relay K-02 pin 5 to pin 1 to CCM1 connector X018, pin J1-21.
Locate the short and repair.
B. If fuse F-51 is OK, continue with step 5.
5. Turn the Road Light switch S-26 to the "Road" lights, "Low Beam" position and inspect fuse F-51.
DISTRIBUTION SYSTEMS - LIGHTING SYSTEM
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