Special tools are needed for systematic troubleshooting and troubleshooting. Such devices are very expensive and, as a rule, are available only at service stations. Therefore, only basic checks are described here.
1. Check the battery, refer to Section Battery check, care and charging.
2. Check all fuses, refer to Section Relays and fuses.
3. Disconnect and reconnect all connectors of the respective electronic systems. Check up reliability of fastening of sockets and cables in an impellent compartment.
4. Check up reliability of fastening of all connections of weight.
5. Check tightness of hoses and pipelines. In this case, pay attention to the presence of cracks. Tie loose connections.