Siemens MS43 Pinout

Pin assignments at plug connector X60001

PinTypeDescription /Signal typeConnection /Measuring notes
1 Not used
2 Not used
3 Not used
4MGroundGround point
5MGroundGround point
6MGroundGround point
7ETerminal 30B+ terminal
8EVoltage supplyFuse carrier, engine electronics
9EVoltage supplyFuse carrier, engine electronics

Pin assignments at plug connector X60002

PinTypeDescription /Signal typeConnection /Measuring notes
1ENot used
2 Not used
3E/ACAN bus low On automatic onlyTransmission control unit
4E/ACAN bus high On automatic onlyTransmission control unit
5 Not used
6E/ADiagnosis signal TXD On automatic onlyTransmission control unit
7MGround Oxygen sensor heater in fornt of catalytic converterHeated oxygen sensor before catalytic converter
8MGround Oxygen sensor heater behind catalytic converterHeated oxygen sensor after catalytic converter
9MGround Oxygen sensor before catalytic converterHeated oxygen sensor before catalytic converter
10 Not used
11 Not used
12 Not used
13 Not used
14MGround Oxygen sensor after catalytic converterHeated oxygen sensor after catalytic converter
15 Not used
16ASignal Oxygen sensor after catalytic converterHeated oxygen sensor after catalytic converter
17 Not used
18ESignal Oxygen sensor before catalytic converterHeated oxygen sensor before catalytic converter
19 Not used
20 Not used
21 Not used
22ESignal Oxygen sensor heater behind catalytic converterHeated oxygen sensor after catalytic converter
23ESignal Activation, main relayDME relay
24ESignal Oxygen sensor heater in fornt of catalytic converterHeated oxygen sensor before catalytic converter

Pin assignments at plug connector X60003

PinTypeDescription /Signal typeConnection /Measuring notes
1ASignal Fuel injector 2Fuel injector 2
2ASignal Fuel injector 1Fuel injector 1
3ASupply Hot-film air mass meterHot-film air mass meter
4ASupply Camshaft sensorCamshaft sensor
5AActivation, changeover valveChangeover valve
6ASupply Fuel tank vent valveFuel tank vent valve
7MGround Secondary air pump valveSecondary air pump valve
8MGround Air mass sensorHot-film air mass meter
9MGround Thermostat, characteristic map coolingThermostat, characteristic map cooling
10MGround Oil level sensorOil level sensor
11 Not used
12EEngine start signal feedbackStarter
13ASignal Battery charge indicator lampAlternator
14ASignal Fuel injector 4Fuel injector 4
15ASignal Fuel injector 3Fuel injector 3
16ASupply Crankshaft sensorCrankshaft sensor
17ASupply Valve, sucking jet pumpValve, sucking jet pump
18MGround Knock sensorKnock sensor
19MGround Knock sensorKnock sensor
20MGround Throttle potentiometerThrottle potentiometer
21ESignal Suction jet pump shut-off valveValve, sucking jet pump
22MGround Remote temperature sensorRemote temperature sensor
23MGround Idle actuatorIdle actuator
24 Not used
25 Not used
26ESignal Oil pressureOil pressure switch
27AReference voltage Hot-film air mass meterHot-film air mass meter
28AGround Remote temperature sensorRemote temperature sensor
29ESignal Intake air temperatureHot-film air mass meter
30ESignal Air mass sensorHot-film air mass meter
31ASignal Knock sensorKnock sensor
32ASignal Knock sensorKnock sensor
33ESignal Throttle potentiometerThrottle potentiometer
34 Not used
35ESignal Crankshaft sensorCrankshaft sensor
36MGround Crankshaft sensorCrankshaft sensor
37MGround Camshaft sensorCamshaft sensor
38ESignal Camshaft sensorCamshaft sensor
39ESignal Oil level sensorOil level sensor
40ESignal Open idle speed control valveIdle actuator
41ESignal Close idle speed control valveIdle actuator
42 Not used
43ASignal Thermostat, characteristic map coolingThermostat, characteristic map cooling
44ESignal Fuel tank vent valveFuel tank vent valve
45ESignal Changeover valveChangeover valve
46AThrottle valve supplyThrottle potentiometer
47 Not used
48ESignal Fuel injector 4Fuel injector 4
49ESignal Fuel injector 3Fuel injector 3
50ESignal Fuel injector 2Fuel injector 2
51ESignal Fuel injector 1Fuel injector 1
52ASignal Secondary air pump valveSecondary air pump valve

Pin assignments at plug connector X60004

PinTypeDescription /Signal typeConnection /Measuring notes
1ESignal Battery charge indicator lampInstrument cluster control unit
2EEngine start signal feedbackInstrument cluster control unit
3ESignal Secondary air pumpSecondary air pump relay
4ASignal Electric fanAuxiliary fan motor
5 Not used
6 Not used
7 Not used
8 Not used
9 Not used
10ESignal Fuel pump relay 1Fuel pump relay 1
11ESignal Oil pressure switchInstrument cluster control unit
12 Not used
13 Not used
14 Not used
15 Not used
16 Not used
17ESpeed signalDiagnostic connector
18 Not used
19 Not used
20 Not used
21ESignal Oil level sensorInstrument cluster control unit
22ESignal Processed wheel speed, rear rightABS/ASC unit
23 Not used
24 Not used
25 Not used
26ETerminal 15Fuse F29
27 Not used
28 Not used
29ESignal Relay, A/C compressorRelay, A/C compressor
30EActivation Leakage diagnosis pump For USA/MEX onlyLeakage diagnosis pump
31 Not used
32E/ASignal Diagnostic link TXDDiagnostic connector
33EElectronic vehicle immobilisationElectronic immobiliser control unit
34ESignal Leakage diagnosis pump For USA/MEX onlyLeakage diagnosis pump
35 Not used
36E/ASignal CAN bus highConnector, CAN bus
37E/ASignal CAN bus lowConnector, CAN bus
38MGround Coolant outlet temperatureTemperature sensor
39ASignal Coolant outlet temperatureTemperature sensor
40 Not used

Pin assignments at plug connector X60005

PinTypeDescription /Signal typeConnection /Measuring notes
1 Not used
2 Not used
3 Not used
4ESignal Ignition coil 2Plug connection, ignition coil
5 Not used
6ESignal Ignition coil 1Plug connection, ignition coil
7 Not used
8ESignal Ignition coil 3Plug connection, ignition coil
9ESignal Ignition coil 4Plug connection, ignition coil