PIN ASSEMBLY 1K3178 - Caterpillar

The connection of battery cables to a battery and the disconnection of battery cables from a battery may cause an explosion which may result in injury or death. The connection and the disconnection of other electrical equipment may also cause an explosion which may result in injury or death. The procedures for the connection and the disconnection of battery cables and other electrical equipment should only be performed in a nonexplosive atmosphere.
Illustration 1 g01376112
The electronics grounding stud is located on the upper left corner of the engine control module.
Inspect the OEM harness for good connections. Inspect the condition of the OEM harness.The electronics grounding stud must have a wire ground to the battery. Tighten the electronics grounding stud at every oil change. Ground wires and straps should be combined at engine grounds. All grounds should be tight and free of corrosion.
Clean the electronics grounding stud and the terminals for the ground strap with a clean cloth.
If the connections are corroded, clean the connections with a solution of baking soda and water.
Keep the electronics grounding stud and the strap clean and coated with MPGM grease or petroleum jelly.