Every 16,000 km or 12 months.
1. Place the car on a level surface, apply the parking brake and open the hood. Inspect all wiring inside the engine compartment, illuminating it with a flashlight or portable lamp.
2. Typically, wiring damage can be caused by it catching on sharp edges or moving suspension/transmission components and/or the accessory drive belt. It can also be damaged by careless installation of components or melted by contact with hot engine parts, coolant lines, etc. In most cases, such damage is caused by improper wiring after dismantling.
3. Depending on the nature of the fault, damaged wiring can be repaired by soldering in a new piece of wire and insulating the joints with electrical tape or heat shrink tubing. In the case of significant damage, it is best to replace the entire wiring harness, but this can be costly.
4. After repairing the damage, it is necessary to correctly lay the harness so that other components do not interfere with it, without tension and kinks. It must be fixed with plastic clamps, clamps and ties.
5. Inspect all electrical connectors and make sure that the contacts are not corroded, check that their housings are securely fastened (see Fig. 9.5). If the connector contacts are corroded (the surface is covered with a white or green coating, or rust) or you suspect that dirt has gotten into the connector, it must be disconnected and cleaned with an electrical contact cleaner. If the connector contacts are heavily corroded, the connector must be replaced. In this case, it may be necessary to replace a section of the wiring harness. Detailed information is available from dealers.
6. If after washing with a special agent the connector corrosion is removed and it looks quite serviceable, then it makes sense to wrap the connector with a suitable material to prevent moisture and dirt from getting into it in the future. Dealers can offer suitable material.
7. Check the condition of the battery terminals and clamps. If a fault is found (see Chapter 5), disassemble and then reassemble the connection or replace the wires. Similarly, check the ground contact points in the engine compartment - these should be reliable "metal-to-metal" connections.
8. For details on checking the spark plug high-voltage wires, see paragraphs 29 and 32.
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