Component Specifications, Engine Control Module (ECM) [2014-2016, B5254T12]
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.
Numbers in parenthesis indicate to which pin of the component the value corresponds.
| Designation | Type | Supply voltage | Value | Miscellaneous |
| Air conditioning (A/C) relay | Mechanical relay | 12 V | 92 Ω ± 10 % at 23 °C | |
| System relay Starter relay |
Mechanical relay | 12 V | 82 Ω ± 10 % at 23 °C (coil) | |
| Battery Relay | Mechanical relay | 12 V | 43 Ω ± 10 % 23 °C (coil) | |
| A/C pressure sensor | Absolute pressure sensor | 5 V (#3) | Air conditioning (A/C) high pressure | |
| Brake light switch | Position switch | 12 V (#1) | The switch is closed when the pedal is depressed (terminals #1 - #5) | |
| Intake pressure sensor | 5 V (#3) | |||
| Fuel temperature sensor | NTC resistor | 5 V (#3) | 2500 Ω ± 6 % at 20 °C (#1 - #2) | Integrated in the fuel pressure sensor |
| Fuel pressure sensor | Piezo resistive pressure sensor | 5 V (#3) | ||
| Engine cooling fan (FC) control module | - | 12 V (#2) | ||
| Evaporative emission system (EVAP) valve | Electromagnetic valve | 12 V (#1) | 20.5 Ω ± 1.5 Ω | |
| Relief valve | Electromagnetic valve | 12 V | Coil 13.3 Ω | Off/On function |
| Accelerator pedal (AP) position sensor | Electronic pedal sensor with two output signals, PWM and a linear analog signal | 12 V (#1) power supply digital position sensor 5 V (#6) Power supply analog position sensor |
Only certain versions also have the analogue signals | |
| Throttle unit | Electronic throttle module (ETM) with two integrated potentiometers and a throttle motor | 5 V (#5) | 1.2Ω (#1-#2 motor winding) at normal operating temperature. | - |
| Fuel injector | Electromagnetic injector valve | 12 V (#2) | Approximately 12 Ω at 20 °C (#1 - #2) | |
| Camshaft position (CMP) sensor | Magneto-resistive sensor | 5 V (#1) | ||
| Knock sensor (KS) | Piezo electric component | Greater than 1 MΩ at 25 ± 10 °C (#1-#2) | ||
| Oil level and oil temperature sensor | 12 V (#1) | An oscilloscope must be used to detect changes in the oil level if a defective sensor is suspected. This is because the signals are based on a series of pulses consisting of temperature, level and quality. | ||
| Ignition coil | 12 V (#1) | Approximately 0.73 Ω (primary winding) | ||
| Preheating, front heated oxygen sensor | PTC resistor | 12 V (#3) | 2.18 - 2.68 Ω at 20 °C (#1 - #2) | |
| Preheating, rear heated oxygen sensor (HO2S) | PTC resistor | 12 V (#1) | Approx. 13 Ω ± 1, 3 Ω (#1 - #2) | |
| Leak diagnostic unit | Consists of pump, electromagnetic valve and an internal heating element (PTC resistor) | 12 V (#4) | 118Ω (#1-#4 pump motor winding) 29.5 Ω ± 10% (terminals #3-#4 Valve coil) 30Ω (#2-#4 Heating element) |
|
| 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) |
|
| Reset valve camshaft | Electromagnetic valve | 12 V (#1) | 7.4 Ω ± 0.5 Ω at 20 °C (#1-#2) | |
| Engine speed (RPM) sensor | Hall sensor | 5 V (#3) | - | - |
| Outside temperature sensor | NTC resistor | 5 V (#1) | 18702 Ω at -20 °C 6318 Ω at 0 °C 2424 Ω at 20 °C 1034 Ω at 40 °C (#2 - #3) |
|
| Charge pressure sensor | Piezo-resistive pressure sensor (pressure) NTC sensor (temperature) |
5V | 2.5 kΩ at 20 °C (temp) Max pressure 500 kPa |
|
| Turbocharger (TC) control valve | Electromagnetic valve | 12 V | Coil 23 ± 1.2 Ω Current consumption 0.72 A at 12 V -40 °C and 100 % deployment. |
Adjustable 0 - 100 % (duty cycle) |
| Brake vacuum sensor | Piezo-resistive pressure sensor (pressure) | 5 V | -100 kPa = 4.5 V 0 kPa = 0.5 V |