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Ignition and Control Systems - Specifications, Electrical/electronic (644 Body): Overview Volvo S40 I рестайлинг

Description of activations

HINT: Activate components and/or functions by clicking the VCT2000 symbol.

Note. Components cannot be activated when the engine is running.

Many of these activations will cause the fuel pump (FP) to start. This is because the system relay is activated to supply the components with power.

No.ComponentFunction
1Fuel pump/system relay.The fuel pump (FP) is activated for 2 seconds. The system relay "clicks". The fuel pump (FP) "buzzes".
2The canister purge (CP) valve.The canister purge (CP) valve is activated once for 1 second. The valve clicks.
3Turbocharger (TC) control valve.The turbocharger (TC) control valve is activated 4 times for 1 seconds. The valve clicks.
4Engine cooling fan (FC), low-speed.Engine cooling fan (FC) low-speed, the fan runs for 3 seconds. The fan can be heard clearly.
5Engine cooling fan (FC), high-speed.Engine cooling fan (FC) high-speed, the fan runs for 3 seconds. The fan can be heard clearly.
6A/C fan.Air conditioning (A/C) condenser cooling fan, the fan runs for 3 seconds. The fan can be heard clearly.
7Air conditioning (A/C) relay.Air conditioning (A/C) relay, the relay is activated once for 4 second. A clicking noise is heard from the compressor clutch.
8Injector 1.The injector clicks for a total of 10 seconds. A ticking noise is heard from the injector.
9Injector 2.The injector clicks for a total of 10 seconds. A ticking noise is heard from the injector.
10Injector 3.The injector clicks for a total of 10 seconds. A ticking noise is heard from the injector.
11Injector 4.The injector clicks for a total of 10 seconds. A ticking noise is heard from the injector.
12Idle air control (IAC) valve.The idle air control (IAC) valve is activated and deactivated at a frequency of 0.2 Hz. A buzzing noise is heard from the valve.
13Malfunction indicator lamp (MIL).The malfunction indicator lamp (MIL) goes out for 1 second then lights up again.
14Front heated oxygen sensor (HO2S).Front heated oxygen sensor (HO2S) preheating, the heating is on for 1 second. Connect a voltmeter between connector terminal #1 (control module side) and ground. Check the signal.
15Rear heated oxygen sensor (HO2S).Rear heated oxygen sensor (HO2S) preheating, the heating is on for 1 second. Connect a voltmeter between connector terminal #1 (control module side) and ground. Check the signal.

Description of parameters

No.TextNotes
1Engine speed = RPMMeasurement range 0 - 8,160 RPM. Idling speed approximately 750 RPM.
2Vehicle Speed = km/hVehicle speed. Measurement range 0-255 km/h
3Coolant temperature = °CEngine temperature. Measurement range -48 to +142°C.
4Engine Coolant Temperature (ECT), start = °CEngine temperature when ignition was last switched on. Measurement range -48 to +142°C.
5Throttle position =°Throttle position. 0° with the throttle closed and 75-100° with the throttle fully open.
6Mass air flow, real = kg/hMeasured air consumption from the mass air flow (MAF) sensor. Normal value is approximately 8-13 kg/h at idling speed and warm engine.
7Air consumption = mg/strokeAir consumption per crankshaft revolution. Measurement range 0-1,389 mg/stroke. A measurement of the engine load. Normal value is approximately 100 mg/stroke when idling with the engine at operating temperature.
8MAF real, MAF calculated, idle = kg/hThe difference between the measured consumption from the mass air flow (MAF) sensor and a calculated reference value. The value is only applicable during turbocharger (TC) control.
9Battery voltage = VBattery voltage after the system relay. Normal value is 13.5 -14.5 V when the generator (GEN) is charging.
10Air temperature °CIntake air temperature measured after the charge air cooler (CAC)). Measurement range -48 to +142°C.
11Ambient pressure =mbarAtmospheric pressure, normal value is approximately 1000 mbar at sea level. The value varies depending on other circumstances.
12Injection time = msInjector opening time. The normal value is approximately 2 ms when the engine is idling at operating temperature.
13Lambda adaptation, part load = %The value indicates how much the injection period at part load has been adjusted compared to a reference value. The value is first updated after the engine has been revved up.
14Lambda adaptation, idle = msThe value indicates how much the injection period at idling speed has been adjusted compared to a reference value. The value is first updated after the engine has been revved up.
15Ignition angle = °Measurement range 72° before top dead center (TDC) to 23° after top dead center (TDC). Normal value when idling is approximately 0-15°.
16Lambda statusO/L= Open Loop, fuel trim not active C/L= Closed Loop, fuel trim active
17Lambda integratorShort-term fuel trim oscillates between -5 and +5 at lambda = 1 when the engine is idling at operating temperature.
18Oxygen sensor front signal (Lambda) = VVoltage from the front heated oxygen sensor (HO2S). Measurement range 0 -1 V. Oscillates between 0 and 1 V when fuel trim is activated.
19Oxygen sensor signal, rear = VVoltage from the rear heated oxygen sensor (HO2S). Measurement range 0-1 V. Oscillates between 0 and 1 V when the three-way catalytic converter (TWC) is cold (>300°C). Stabilizes at 0.2-0.7 V when the three-way catalytic converter (TWC) is at operating temperature (<300°C)
20Idle duty cycle = %Idle air control (IAC) valve opening. Measurement range 0 - 100%. The normal value is approximately 20-40% when idling with the engine at operating temperature.
21Idle air trim adaptation = %The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a predetermined value. Measurement range -50 to +50%.
22Idle adaptation, A/C = %Idle air trim adaptation with the A/C compressor activated. The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a reference value.
23Turbo control valve duty cycle = %Turbocharger (TC) control valve opening. Measurement range 0 - 100%. A value over 0% means the engine power is regulated using the valve. The value only applies when the turbocharger control valve is activated.
24EVAP duty cycle = %EVAP valve opening. Measurement range 0-100%. 0% EVAP valve shut. 100% EVAP valve fully open. The intermediate values depend on the opening of the EVAP valve
25A/C-pressure = mbarPressure in the air conditioning (A/C) system. Measurement range 0 - 3442 mbar.
26A/C demand =Displays whether the engine control module (ECM) has requested that the ECC control module starts the air conditioning (A/C) compressor. The A/C-compressor is permitted to start if the air conditioning (A/C) pressure is below a parameter. Yes = ECC requests that the A/C compressor starts. No = ECC does not request that the A/C compressor starts.
27A/C relayYes = A/C relay activated. No = A/C relay not activated.
28Immo locked =NO= Immobilizer control module permits start. Yes = Immobilizer control module does not permit start.
29VIN learned =Yes = Engine control module (ECM) has learned the VIN-code. No = Engine control module (ECM) has not learned any VIN-code.
30Faulty VIN =Yes = Different VIN codes in the immobilizer control module and engine control module (ECM). No = Immobilizer control module and engine control module (ECM) have the same VIN-code. The parameter is relevant only when the communication between the immobilizer control module and the engine control module (ECM) is functioning.
31Manifold pressure = hpaThe pressure in the intake system. Measurement range 0 -2400 mbar. Normal value when idling is approximately 400 mbar.
32Camshaft position = °The camshaft position in relation to crankshaft. Measurement range -66° - 30°. The value varies depending on how camshaft is controlled. Camshaft control only occurs when the engine is cold.

See Description of activations

See Description Of Activations

See Description Of Parameters

See Description Of Activations

See Description Of Parameters

DSA Signal Description

All the values given below are between the terminal in column 1 and terminal 9 (ground), unless otherwise indicated in brackets.

DSA control module terminals 1 - 16 correspond to terminals 31 - 46 on the breakout box.

Note. It is important to connect the breakout box and check the ground terminal before taking readings.

U=DC voltage in volts (V)F =Frequency in Hertz (Hz)
Ubat=Battery voltage% duty =Duty cycle (pulse ratio) as a percentage (%)
Ulow =Voltage approximately 0 V
TerminalSignal typeIgnition onEngine idlingOtherParameter read off
#1Power supply (from the ignition switch)Ubat
#2Signal, wheel speed left front wheel (from the ABS control module)U approx. 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel.A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty approx. 50%).
#3Signal, wheel speed right front wheel (from the ABS control module)U approx. 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel.A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty approx. 50 %).
#4Signal, wheel speed left rear wheel (from the ABS control module)U approx. 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel.A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty approx. 50%).
#5Signal, throttle position (TP) sensor (from the engine control module (ECM))%duty approx. 15 % at closed throttle position (CTP) (idling). f approx. 50 HzPulsed signal (0 V - Ubat) with fixed frequency and variable pulse ratio (% duty). Pulse ratio (%duty) increases with increased throttle.3
#6Signal, DSA switchSwitch unaffected: U approx. 0 - 3 V below Ubat Switch affected: U approx.UlowThe signal is grounded when the switch is pressed.8
#7Signal, stop (brake) light switchOpen: U approx.Ulow Closed: U = 0 - 1.5 V below UbatStop (brake) light switch closes when braking and the control module receives a signal.11
#8
#9Ground (for FENIX 5.1 ground via the engine control module (ECM), measured at the battery negative terminal)Ulow
#10
#11
#12Signal, wheel speed right rear wheel (from the ABS control module)U approx. 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel.A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty approx. 50 %).
#13Signal, load (TQ) (from the engine control module (ECM))U approx.UlowF approx. 33 HzPulsed signal (0 V - Ubat) with variable frequency and pulse ratio (% duty). The frequency increases with engine speed (RPM), the pulse ratio (%duty) increases with load.
#14Diagnostic leadU = 1 - 4 V below Ubat Other values apply if the fault-tracing instrument is connected to the data link connector (DLC).
#15Signal, request for torque limiting (to the engine control module (ECM))F approx. 200 HzPulsed signal (0 - 5 V) with fixed frequency and variable pulse ratio (% duty).
#16Control signal, DSA warning lampLamp lit: U =0-0.5 V Lamp not lit: Ubat9, 10

See DSA signal description

See DSA signal description

See DSA signal description