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Pin Voltage Charts

DME/MOTRONIC CONTROL UNIT PIN ASSIGNMENTS (1) (530, 540 & 740)

Pin No. Function/Description Signal Type Or Voltage Value
1 Fuel Pump Relay Input Signal
2 Idle Speed Control Valve (Close) Output Signal
3 Injector (No. 1) Output Signal
4 Injector (No. 4) Output Signal
5 Injector (No. 6) Output Signal
6 Injectors (Ground) Ground Circuit
7 Injector (No. 7) Output Signal
8 Malfunction Indicator Light Output Signal (Instrument Cluster)
11 Throttle Valve Angle Input Signal (Slip Control Module - ABS/ASC)
12 Oxygen Sensor (No. 2) Input Signal
13 Oxygen Sensor (No. 1) Input Signal
14 Mass Airflow Sensor (Ground) Ground Circuit
15 Ignition Circuit Monitoring Ground Circuit
16 Crankshaft Sensor (KWG) Input Signal
17 Camshaft Sensor (NWG) Input Signal
19 Secondary Air Pump Activation Output Signal (Air Pump Valve/Relay)
22 Ignition Coil (No. 7) Output Signal (Primary Circuit)
23 Ignition Coil (No. 6) Output Signal (Primary Circuit)
24 Ignition Coil (No. 4) Output Signal (Primary Circuit)
25 Ignition Coil (No. 1) Output Signal (Primary Circuit)
26 Continuous Pulse Input Signal (B+ Junction Coil)
27 Main Relay Activation Output Signal
28 Ground (ECM, Shield, Sensors) Ground Circuit
29 Idle Speed Control Valve (Open) Output Signal
31 Injector (No. 5) Output Signal
32 Injector (No. 8) Output Signal
33 Injector (No. 3) Output Signal
34 Ground (Except ECM, Shield, Sensors) Ground Circuit
35 Injector (No. 2) Output Signal
36 Evaporative Emissions Output Signal (Charcoal Canister)
37 Heated Oxygen Sensor Relay Output Signal
39 Oxygen Sensor (No. 2) Ground Ground Circuit
40 Oxygen Sensor (No. 1) Ground Ground Circuit
41 Mass Airflow Sensor Input Signal
42 Vehicle Speed Signal Input Signal (Instrument Cluster)
43 Crankshaft Sensor (KWG) Ground Circuit
44 Camshaft Sensor (NWG) Ground Circuit
45 Ignition Circuit Monitoring (Ground Shield) Ground Circuit
46 Fuel Consumption (KVA) Signal Output Signal (Instrument Cluster)
47 Engine Speed (TD) Signal Output Signal (Instrument Cluster)
48 A/C Compressor Signal Output Signal (A/C Compressor Relay)
49 Ignition Coil (No. 2) Output Signal (Primary Circuit)
50 Ignition Coil (No. 3) Output Signal (Primary Circuit)
51 Ignition Coil (No. 8) Output Signal (Primary Circuit)
52 Ignition Coil (No. 5) Output Signal (Primary Circuit)
54 ECM Relay (Voltage) Input Signal
55 Ignition (Ground) Ground Circuit
59 5-Volt (Reference) Output Signal (Throttle Control Potentiometer)
60 Programming Voltage Input Signal (Data Link Connector)
62 Throttle Control Signal Input Signal (Slip Control Module - ASC+T)
64 A/C Signal Input Signal (A/C Control Module)
65 A/C Pressure Signal Input Signal (A/C Pressure Switch)
66 Drive-Away (Anti-Theft) Protection Input Signal
67 Knock Sensor (No. 4) Input Signal
68 Knock Sensor (No. 3) Input Signal
69 Knock Sensor (No. 2) Input Signal
70 Knock Sensor (No. 1) Input Signal
71 Ground (Analog Signals/ Knock Sensor) Ground Circuit
73 Throttle Position Sensor Input Signal
77 Intake Air Temperature Sensor Input Signal
78 Engine (Coolant) Temperature Sensor Input Signal
81 Headlight Switch (Low Beam) Input Signal
82 Engine Coasting Signal Input Signal (Slip Control Module - ASC+T)
83 Traction Control Regulation Input Signal (Slip Control Module - ASC+T)
84 Controller Area Network (CAN-Shield) Output Signal (Trans. Control Module)
85 Controller Area Network (CAN-L) Input/Output Signal (Trans. Control Module)
86 Controller Area Network (CAN-H) Input/Output Signal (Trans. Control Module)
87 Diagnostic Initiation Line (RxD) Output Signal (Diagnostic Bus)
88 Diagnostic Data Line (TxD) Input/Output Signal (Diagnostic Bus)
(1) Pin assignments not listed are not used (blank).