Electrical Connections Or Wiring
- Poor electrical connections/terminal tension or wiring conditions cause most intermittents. Perform a careful inspection of the suspected circuit for the following:
- Check for poor mating of the connector halves, or terminals not fully seated in the connector body (backed-out).
- Check for improperly formed or damaged terminals. Check for poor terminal tension.
- Check for poor terminal to wire connections including terminals crimped over insulation. This requires removing the terminal from the connector body.
- Check for corrosion/water intrusion. Pierced or damaged insulation can allow moisture to enter the wiring. The conductor can corrode inside the insulation, with little visible evidence. Look for swollen and stiff sections of wire in the suspect circuits.
- Check for wires that are broken inside the insulation.
- Check the harness for pinched, cut or rubbed through wiring.
- Ensure that the wiring does not come in contact with hot exhaust components.
- Repair the condition as necessary.