Welding Near Electronic Control Units; Keeping Electronic Control Units Clean - Northern Lights M80A13S Operator's Manual

Welding Near Electronic Control Units

IMPORTANT: Do not jump-start engines with arc
welding equipment. Currents and voltages are
too high and may cause permanent damage.
1. Disconnect the negative (-) battery cable(s).
2. Disconnect the positive (+) battery cable(s).
3. Connect the positive and negative cables together. Do
not attach to vehicle frame.
4. Clear or move any wiring harness sections away from
welding area.
5. Connect welder ground close to welding point and
away from control units.
Keep Electronic Control Unit Connectors
Clean
IMPORTANT: Do not open control unit and do not
clean with a high-pressure spray. Moisture,
dirt, and other contaminants may cause
permanent damage.
1. Keep terminals clean and free of foreign debris.
Moisture, dirt, and other contaminants may cause the
terminals to erode over time and not make a good
electrical connection.
Engine Operation (Continued)
6. After welding, reverse Steps 1—5.
2. If a connector is not in use, put on the proper dust cap
or an appropriate seal to protect it from foreign debris
and moisture.
3. Control units are not repairable.
4. Since control units are the components LEAST likely
to fail, isolate failure before replacing by completing a
diagnostic procedure. (See your John Deere dealer.)
5. The wiring harness terminals and connectors for
electronic control units are repairable.
OM3-80 12/21
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DX,WW,ECU02 -19-14AUG09-1/1
DX,WW,ECU04 -19-11JUN09-1/1