Checking and repairing electrical circuits (Chevrolet Orlando 1)

When diagnosing circuits and repairing electrical equipment, it is necessary to carefully inspect the wiring, check the correctness of the connections, the absence of burnt, frayed or pinched wires, and ensure that the wires do not come into contact with sharp edges or parts subject to heating to high temperatures (for example, an exhaust manifold). Damaged wire insulation must be restored (for example, with electrical tape) or replace the wire.

There are two cases of circuit damage: open circuit and short circuit.

When a break occurs, the circuit is opened and power is not supplied to the electrical appliance. Sometimes a break is very difficult to detect because the housing of the connector block hides oxidized contacts or an incorrect connection. A break can also be detected by shaking the pads or wiring harness. This must be taken into account if there are signs of a break or intermittent operation of the electrical appliance.

A short circuit is an unacceptable connection of a part of a circuit to ground or another part of the circuit. Typically, a short circuit results in a blown fuse or electrical appliances turning on by themselves.

After repairing the electrical wiring, it is necessary to check the circuit by turning on the electrical appliances included in this circuit. This confirms not only the correctness of the repair performed, but also the correctness of the diagnostics performed when searching for a fault.

(The article was reprinted from the website ChevyMan.ru)