S40/V40
1. General information
2. Operation and maintenance of the car
3. Design and technical characteristics of engines
4. Repair of the engine
5. Transmission
6. Brake system
7. Forward suspension bracket and steering
8. Back suspension bracket
9. Control system of the Fenix 5.1 engine
9.1. Description of system
9.2. Diagnostics
9.2.1. Check of some elements of a control system of the engine
9.2.2. Survey and detection of defects
10. Electric equipment. Conducting and components
11. Body
12. Schemes of electric equipment
 







9-2-diagnostika.html

9.2. Diagnostics




BU possesses diagnosing function which provides continuous control of entrance and output signals. In case of registration of failure which consequence excess of content of harmful substances in exhaust gases is BU includes the indicator lamp of failures signaling about malfunction existence. A number of emergency programs allows to drive the car and in case of failures in any of systems. Search of malfunctions is facilitated thanks to existence of the diagnostic socket to which the Volvo device for reading of codes of malfunctions (tab. 9.1) is connected.

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9.1.11. Output signals of the control unit
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9.2.1. Check of some elements of a control system of the engine