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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volvo S40 / V40 (from 1996 to 2000, the year of issue)

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Volvo S40 / V40
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S40 / V40
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Rear suspension
Engine Management System Fenix 5.1
Description of the system
Pressure and temperature
Oxygen sensor
Camshaft position sensor, speed and crankshaft position
The coolant temperature sensor and detonation
Throttle Position Sensor
Management of fuel system
Management ignition system
The regulator Idle
Management of the cooling fan
Management of the air conditioning compressor
Output signals of the control unit
Diagnostics
Electric. Wiring and components
Body
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Throttle Position Sensor



Engine Management System Fenix 5.1
Fig. 9.1. Engine Management System Fenix 5.1: 2/14 - the relay system of the engine; 3/1 - the ignition switch; 4/1 - block engine control system Fenix 5.1; 6/13 - the fuel pump; 7/15 - heated oxygen sensor (NO2S); 7/21 - speed sensor (RPM) gasoline engine;
7/22 - Sensor Manifold Absolute Pressure (MAP sensor); 7/23 - coolant temperature of the engine (ECT); 7/24 - air temperature sensor input; 7/25 - throttle position sensor; 7/26 - knock sensor (KS); 7/27 - the camshaft position sensor; 8/2 - a regulator of idling (IAC); 8/6, 8/7, 8/8, 8/9 - injectors; 8/12 - purge valve of the coal filter (CP); 10/51 - warning lamp exhaust gas temperature; 11/2 - the fuse box in the passenger compartment; 24/20 - 22-pin connector harness of the passenger compartment (C), the wiring in the engine compartment (A) (gray); 24/23 - 22-pin connector harness of the passenger compartment; 24/27 - 12-pin connector wiring harness in the engine compartment
(A) - harness the engine control module (ECM); 24/33 - 4-pin harness the engine control module (UST) (B) (Q); 31/25 - prong under the dashboard


Mounted on the throttle body 7/25 (Fig. 9.1), the throttle position sensor delivers to the ECU signals the degree of opening the valve. ECU uses this information to calculate the engine speed and engine load.
By turning the axis of the throttle valve is displaced movable contacts that sensor resistance changes. As a result, the voltage output to the ECU varies from 0.7 V when the valve is closed completely to 4.7 V at full throttle. The output signal changes its value gradually.




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Management of fuel system

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