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Pin Voltage Charts

DME/MOTRONIC CONTROL UNIT PIN ASSIGNMENTS (1) (DME 3.3)

Pin No. Function/Description Signal Type Or Voltage Value
1 Fuel Pump Relay Output Signal (Relay Terminal No. 85)
2 Idle Speed Control Valve (Close) Output Signal
3 Fuel Injector (No. 5) Pulse (Duty Cycle) Duration In % (Output Signal)
4 Fuel Injector (No. 6) Pulse (Duty Cycle) Duration In % (Output Signal)
5 Fuel Injector (No. 4) Pulse (Duty Cycle) Duration In % (Output Signal)
6 Fuel Injectors (Ground) Ground Circuit
8 Malfunction Indicator Light Output Signal (Instrument Cluster)
11 Potentiometer Signal Output Signal (Electronic Transmission Control - EGS)
12 Throttle Position (TP) Sensor Input Signal
13 Heated Oxygen Sensor Input Signal
14 Airflow Sensor Input Signal
15 Knock Sensor (No. 1 & 2) Input Signal
16 Crankshaft/RPM Sensor Input Signal
17 Camshaft Position Sensor Input Signal (Hall Effect)
23 Ignition Coil (No. 4) Output Signal (Primary Circuit)
24 Ignition Coil (No. 6) Output Signal (Primary Circuit)
25 Ignition Coil (No. 5) Output Signal (Primary Circuit)
26 Battery Voltage (Permanent) 12 Volts (Input Signal)
27 ECM Relay Output Signal (Relay Terminal No. 85)
28 Sensors (Shield Wire) Ground Circuit
29 Idle Speed Control Valve (Open) Output Signal
31 Fuel Injector (No. 3) Pulse (Duty Cycle) Duration In % (Output Signal)
32 Fuel Injector (No. 2) Pulse (Duty Cycle) Duration In % (Output Signal)
33 Fuel Injector (No. 1) Pulse (Duty Cycle) Duration In % (Output Signal)
34 Ground (Except Injectors & Ignition) Ground Circuit
36 Fuel Tank Vent (Evaporation) Control Output Signal
37 Oxygen Sensor Heater Relay Output Signal (Relay Terminal No. 85)
38 Oxygen Sensor Heater Relay Output Signal
40 Oxygen Sensor Signal Ground Circuit
41 Air Mass Sensor Input Signal
42 Knock Sensor (No. 3 & 4) Input Signal
43 Engine Sensors (Ground) Ground Circuit
44 Camshaft Sensor (Cyl Identification) Input Signal
41 Air Mass Sensor Input Signal
42 Vehicle Speed Signal Input Signal (Instrument Cluster)
43 Crankshaft Sensor/RPM Signal Input Signal
44 Engine Sensors (Ground) Ground Circuit
45 Ground Output Signal (Ignition Shield)
46 Fuel Consumption (Tach Signal) Output Signal (Instrument Cluster)
47 Engine Speed (TD) Signal Output Signal (Instrument Cluster)
48 A/C Compressor Cut-Out (2) Output Signal
50 Ignition Coil (No. 1) Output Signal (Primary Circuit)
51 Ignition Coil (No. 2) Output Signal (Primary Circuit)
52 Ignition Coil (No. 3) Output Signal (Primary Circuit)
54 Battery Voltage 12 Volts (Battery Voltage Input)
55 Ignition (Ground) Ground Circuit
56 Ignition Switch Input 12 Volts (Battery Voltage Input)
59 5-Volt (Reference) Output Signal (TPS & Airflow Sensor)
60 Programming Voltage Input Signal
64 A/C Compressor Signal Input Signal
65 A/C Pressure Signal Input Signal
66 Drive-Away (Anti-Theft) Protection Input Signal
69 Knock Sensor (No. 4-6) Input Signal
70 Knock Sensor (No. 1-3) Input Signal
71 Knock Sensor (Ground) Ground Circuit
73 Throttle Potentiometer (TPS) Input Signal
77 Intake Air Temperature Sensor Input Signal
78 Engine (Coolant) Temp. Sensor Input Signal
81 Park/Neutral Switch Input Signal
82 Throttle Valve Angle (Reduction) Input Signal (Slip Control Module - ABS/ASC+T)
83 Throttle Valve Angle (Increase) Input Signal (Slip Control Module - ABS/ASC+T)
87 Diagnostic Initiation Line (RxD) Output Signal
88 Diagnostic Data Line (TxD) Input/Output Signal
(1) Pin assignments not listed are not used (blank).
(2) A/C compressor control relay terminal No. 85.