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Pin Voltage Charts

DME/MOTRONIC CONTROL UNIT PIN ASSIGNMENTS (1) (DME 1.7)

Pin No. Function/Description Signal Type Or Voltage Value
1 Fuel Pump Relay Output Signal (Relay Terminal No. 85)
3 Fuel Injectors (No. 2 & 4) 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
14 Airflow Sensor Input Signal
15 Knock Sensor (No. 1 & 2) Input Signal
16 Camshaft Sensor (Cyl Identification) Input Signal
17 Fuel Consumption (Tach Signal) Output Signal (Instrument Cluster)
18 Intake Air Changeover Valve Output Signal
24 Ignition (No. 3) Output Signal (Primary Circuit)
25 Ignition (No. 1) 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 Output Signal
32 Fuel Injectors (No. 1 & 3) 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)
41 Airflow Sensor Input Signal
42 Knock Sensor (No. 3 & 4) Input Signal
43 Engine Sensors (Ground) Ground Circuit
44 Camshaft Sensor (Cyl Identification) Input Signal
48 A/C Compressor Cut-Out (2) Output Signal
51 Ignition (No. 4) Output Signal (Primary Circuit)
52 Ignition (No. 2) Output Signal (Primary Circuit)
54 ECM Relay (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 Ignition Timing Intervention Input Signal (Electronic Transmission Control - EGS)
65 Park/Neutral Switch Input Signal
67 Crankshaft Position/ RPM Sensor Input Signal
68 Crankshaft Position/ RPM Sensor Input Signal
70 Heated Oxygen Sensor Input Signal
71 Heated Oxygen Sensor (Ground) Ground Circuit
73 Vehicle Speed Signal Input Signal (Instrument Cluster)
74 Engine Speed (TD) Signal Output Signal (Instrument Cluster)
76 Airflow Sensor Input Signal
77 Airflow Sensor Input Signal
78 Engine (Coolant) Temp. Sensor Input Signal
81 Drive-Away (Anti-Theft) Protection Input Signal
85 A/C Pressure Input Signal
86 A/C Switch Input Signal
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.