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Pin Voltage Charts

DME/MOTRONIC CONTROL UNIT PIN ASSIGNMENTS (3.5L ENGINE M30) (1)

PinNo. Function/Description Signal Type Or Voltage Value (2)
1 Ignition Coil (Terminal No. 1) 150 Volts, 0.2 Amps Maximum (Output Signal)
2 Ignition (Ground) Ground Circuit
3 Fuel Pump Relay & Crankshaft/ Speed Sensor Output Signal
4 Idle Speed Actuator (Open) Output Signal
5 Fuel Tank (Evaporation) Control Output Signal
6 Engine Speed Signal Ignition Interval (TD) Output Signal
7 Airflow Sensor Input Signal
8 Cylinder Identification Sensor Input (Positive +) Signal
10 Oxygen Sensor (Ground) Ground Circuit (Potential Free)
12 Airflow Sensor Output Signal
13 Diagnostic Initialization Line (RxD) Input Signal
14 Injectors (Ground) Ground Circuit
15 CHECK ENGINE Light Output Signal
16 Injectors (No. 1, 3 & 5) Output Signal
17 Injectors (No. 2, 4 & 6) Output Signal
18 Battery Voltage (Permanent) 12 Volts (Battery Voltage Input)
19 Ground (Injectors & Ignition) Ground Circuit
22 Idle Speed Actuator (Close) Output Signal
24 Ground (Except Injectors & Ignition) Ground Circuit
26 Airflow Sensor (Ground) Ground Circuit
27 Ignition Coil (Terminal No. 15) Input Signal
28 Oxygen Sensor Input Signal
29 Engine Speed Signal Input Signal From Instrument Cluster
31 Cylinder Identification Sensor Ground (Negative -) Circuit (Potential Free)
32 Instrument Cluster (Fuel Consumption) Square Wave Output Signal
33 Kickdown Inhibit Output Signal (Automatic Transmission Only)
36 DME Master Relay Output Signal
37 DME Master Relay (Supply) Input Signal
38 Anti-Theft Alarm Switch Input Signal
39 Programming Voltage 12 Volts (Battery Voltage Input)
40 A/C Compressor Input Signal
41 A/C Switch Input Signal
42 Park/Neutral Switch Input Signal (Automatic Transmission Only)
44 Intake Air Temp. Sensor Input Signal
45 Engine (Coolant) Temp. Sensor Input Signal
47 Pulse Sensor (Inductive) Input (Positive +) Signal
48 Pulse Sensor (Inductive) Input (Negative -) Signal
50 Engine Drag/Torque Control Input Signal
51 Ignition Timing Control Input Signal (Automatic Transmission Only)
52 Idle Speed Signal Input Signal
53 Full Load (WOT) Signal Input Signal
54 Torque Converter Control Input Signal (Automatic Transmission Only) was not available from manufacturer.
55 Diagnostic Data Line (TxD) Input/Output Signal
(1) Pin assignments not listed are not used (blank).
(2) A more detailed description of signal type or voltage values