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Home >> Volvo >> 2009 >> C30 R-Design, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control Module (ECM) - Specifications, Electrical/Electronic >> Engine Control Module (ECM) (B5244S4) >> Component Specification (2007)
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Component Specification (2007)

The component specification gives the value of the component when the connector is disconnected. Where no value is given, it is not possible to measure a relevant value at the component.

The number to the right of the voltage value indicates the terminal pin on the component to which the value refers.

Designation  Type  Supply Voltage  Value  Miscellaneous 
Air conditioning (A/C) relay Mechanical relay 12V (#1) Approximately 70 Ω (coil)  
A/C pressure sensor Absolute pressure sensor 5 V (#3) -  
Air conditioning (A/C) pressure switch Pressure switch (Pressostat) 12 V (#2) 0 Ω at air conditioning (A/C) off -
Stop lamp switch Position switch 12 V (#1) The switch is closed when the pedal is depressed (#1-#2)  
Fuel temperature sensor NTC resistor 5V (#3)  
2500Ω at 20° (#1-#2)
Integrated in the fuel pressure sensor
Fuel pressure sensor Piezo resistive pressure sensor 5V (#3) -  
Evaporative emission system (EVAP) valve Electromagnetic valve 12 V (#1) 17-24 Ω at 20°C (#1-#2)  
Accelerator pedal (AP) position sensor Electronic pedal sensor with two output signals, PWM and a linear analog signal 12 V (#1) 5 V (#6) -  
Throttle unit Electronic throttle control module with two integrated potentiometers and a damper motor Potentiometers: 5 V (#3)  
-
-
Fuel injector Electromagnetic injector valve 12 V (#1) Ca 12 Ω at 20°C (#1-#2)  
Camshaft sensor Magneto-resistive sensor 5 V (#1) -  
Knock sensor (KS) Piezo electric component - - Separate signal ground for the knock sensor (KS)
Preheating front heated oxygen sensor (HO2S) PTC resistor Preheating: 12 V (#3) 2, 6-3, 4 Ω at 20°C (#3-#4)  
Preheating, rear heated oxygen sensor (HO2S) PTC resistor Preheating: 12 V (#1) Approximately 9 Ω at 20°C (#1-#2)  
Mass air flow (MAF) sensor - 12 V (#2)
5 V (#4)
-  
Air temperature sensor, intake NTC resistor 5 V (#1) Approximately 2300 Ω at 20°C
(#1-#2)
Integrated mass air flow (MAF) sensor
Leak diagnostic unit Consists of an air pump, an electromagnetic valve and an internal heating element (PTC resistor) 12 V (#4) Approximately 118 Ω (#1-#4 pump motor winding)
27, 9 -34, 1 Ω (#3-#4 Valve coil)
The heating element for heating up the pulsed secondary air injection system (PAIR) pump is controlled by the central electronic module (CEM)
Engine coolant temperature (ECT) sensor NTC resistor 5 V (#1) 15040 Ω at -20°C
2450 Ω at 20°C
318 Ω at 80°C
(#1- #2)
 
Oil pressure switch Pressure switch (Pressostat) 12 V (#1) Grounded in the cylinder block. Closed switch when the oil pressure is low  
Intake camshaft reset valve Electromagnetic valve 12 V (#1) 3-5 Ω (#1-#2)  
Flywheel sensor Engine speed sensor - 125Ω (+/- 17 Ω) at 20°C (#1-#2)  
System relay Mechanical relay 12V (#1) Approximately 80 Ω (coil)  
Starter relay Mechanical relay 12V (#1) Approximately 80 Ω (coil)  
Intake pressure sensor Semi-conductor type +5V (#3) 10 Ω (#1-#2)