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Old 09-14-2011, 06:32 AM   #1
JT_3K
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Join Date: Sep 2011
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Post Laymans Guide to MS43 DME

Ok. I'm having issues with the MS43 DME Unit so I thought (as I can't find this information on the forum already) I'd crunch a guide to help everyone out. Hopefully this'll stop you struggling around the web like me to get this information.

Most of the info is for the MS43 but may be applicable to other DME units

It's got the BMW standardised connections A6000 up the side as shown here

Official plugs are as follows:

E=Input
A=Output
M=Ground


2 - X60001 9-pin, black Plug connector DME control unit Module 1

1 A 15 Activate relay Relay, injection valves
2 Not used
3 Not used
4 M 31E Ground Ground point
5 M 31L Ground Ground point
6 M 31L Ground Ground point
7 E 30 Voltage supply B+ junction point E-box
8 E U_HR<2 Voltage supply Fuse holder in E-box
9 Not used



3 - X60002 24-pin, black Plug connector DME control unit Module 2

1 M T_LHV1 Oxygen sensor heating ground Oxygen sensor 1 (in front of catalytic converter)
2 Not used
3 E/A D_CAN-L CAN bus low Transmission control module (EGS)
4 E/A D_CAN-H CAN bus high Transmission control module (EGS)
5 Not used
6 E/A D_TXD2 Diagnosis Transmission control module (EGS)
7 M T_LHH1 Oxygen sensor heating ground Oxygen sensor 1 (behind catalytic converter)
8 Not used
9 Not used
10 Not used
11 Not used
12 Not used
13 M T_LHV2 Oxygen sensor heating ground Oxygen sensor 2 (in front of catalytic converter)
14 E A_LSV1 Sensor signal Oxygen sensor 1 (in front of catalytic converter)
15 E A_LSV2 Sensor signal Oxygen sensor 2 (in front of catalytic converter)
16 E A_LSH1 Sensor signal Oxygen sensor 1 (behind catalytic converter)
17 Not used
18 E A_LSH2 Sensor signal Oxygen sensor 2 (behind catalytic converter)
19 M T_LHH2 Oxygen sensor heating ground Oxygen sensor 2 (behind catalytic converter)
20 M M_LSV1 Signal ground Oxygen sensor 1 (in front of catalytic converter)
21 M M_LSV2 Signal ground Oxygen sensor 2 (in front of catalytic converter)
22 M M_LSH1 Signal ground Oxygen sensor 1 (behind catalytic converter)
23 A S_HR Activate relay Engine control module relay
24 M M_LSH2 Signal ground Oxygen sensor 2 (behind catalytic converter)



4 - X60003 52-pin, black Plug connector DME control unit Module 3

1 E A_HFM Signal air mass meter Hot film air mass meter
2 E P_NWGA1 Signal camshaft position Camshaft position sensor 2 (outlet)
3 Not used
4 Not used
5 E P_NWGE1 Signal camshaft position Camshaft position sensor 1 (inlet)
6 Not used
7 A U_DKG Voltage supply Electrical gas actuator
8 E P_KWG Signal crankshaft position Crankshaft position sensor
9 Not used
10 E A_DKG2 Throttle position signal 2 Electrical gas actuator
11 Not used
12 Not used
13 Not used
14 Not used
15 M M_NWGA1 Ground Camshaft position sensor 2 (outlet)
16 Not used
17 M M_HFM Ground Hot film air massmeter
18 M M_NWGE1 Ground Crankshaft position sensor 1 (inlet)
19 E A_DKG1 Throttle position signal 1 Electrical gas actuator
20 M M_DKG Ground Electrical gas actuator
21 M M_KWG Ground Crankshaft position sensor
22 E A_TANS Temperature signal Intake air temperature sensor
23 M M_TANS Ground Intake air temperature sensor
24 E A_TMOT Temperature signal Engine coolant temperature sensor
25 M M_TMOT Ground Engine coolant temperature sensor
26 Not used
27 E A_TOEL Temperature signal Oil temperature sensor
28 M M_TOEL Ground Oil temperature sensor
29 E A_KS1A Cyl. 1-3 knock sensor Double knock sensor
30 E A_KS1B Cyl. 1-3 knock sensor Double knock sensor
31 E A_KS2A Cyl. 4-6 knock sensor Double knock sensor
32 E A_KS2B Cyl. 4-6 knock sensor Double knock sensor
33 A P_EVZ1 Activate valve Cyl. 1 fuel injection valve
34 A P_EVZ2 Activate valve Cyl. 2 fuel injection valve
35 A P_EVZ3 Activate valve Cyl. 3 fuel injection valve
36 A P_EVZ4 Activate valve Cyl. 4 fuel injection valve
37 A P_EVZ5 Activate valve Cyl. 5 fuel injection valve
38 A P_EVZ6 Activate valve Cyl. 6 fuel injection valve
39 Not used
40 A T_NWE1 Activate valve Variable camshaft control valve 1 (inlet)
41 A T_NWA1 Activate valve Variable camshaft control valve 2 (outlet)
42 A T_TEV Activate valve Evaporative emission valve
43 A T_MDK1 Activate motor Throttle position actuator
44 A T_MDK2 Activate motor Throttle position actuator
45 A S_KFK Cooling signal Thermostat, characteristic map cooling
46 A T_LLFSS CLOSE signal Idle speed control valve
47 A T_LLFSO OPEN signal Idle speed control valve
48 M W_KS Ground Shield knock sensor
49 A S_DISA Activate valve Valve, individual control intake system
50 Not used
51 Not used
52 A S_SLPV Activate valve Secondary air pump valve



5 - X60004 40-pin, black Plug connector DME control unit Module 4

1 Not used
2 Not used
3 A S_SLP Activate relay Secondary air pump relay
4 Not used
5 Not used
6 Not used
7 M M_FWG1 Ground Pedal position sensor
8 E A_FWG1 Signal, pedal position 1 Pedal position sensor
9 A U_FWG1 Voltage supply Pedal position sensor
10 A EKP Activate relay Fuel pump relay
11 Not used
12 M M_FWG2 Ground Pedal position sensor
13 E A_FWG2 Signal, pedal position 2 Pedal position sensor
14 A U_FWG2 Voltage supply Pedal position sensor
15 Not used
16 Not used
17 A TD Crankshaft RPM speed signal (TD) Electronic immobilizer control module (EWS III)/Thermal oil level sensor (TOENS) control module
18 Not used
19 Not used
20 A S_DMTL Voltage supply Leakage diagnosis pump
21 Not used
22 E DFAHR Speed signal right rear ABS/ASC/DSC control module
23 E KUPP Clutch signal Clutch switch
24 E KL 54 ON Brake signal Brake light switch
25 Not used
26 E 15A26 Terminal 15 Fuse 26
27 E MFL Cruise control signal Cruise control interface
28 E S_BLTS Brake signal Brake light switch
29 A S_KOREL Activate relay Compressor control relay
30 A S_UVTL Activate changeover valve Leakage diagnosis pump
31 Not used
32 E/A TXDII TXD diagnosis data link Data link connector
33 E S_DWA Drive-away protection signal (code) Electronic immobilizer control module (EWS III)
34 Not used
35 M 31 Ground Cruise control interface
36 E/A CAN+ CAN bus high Instrument cluster, ABS/ASC/DSC control module, steering angle sensor
37 E/A CAN- CAN bus low Instrument cluster, ABS/ASC/DSC control module, steering angle sensor
38 Not used
39 Not used
40 Not used


6 - X60005 9-pin, black Plug connector DME control unit Module 5

1 A P_ZSZ3 Ignition coil signal Cyl. 3 ignition coil
2 A P_ZSZ2 Ignition coil signal Cyl. 2 ignition coil
3 A P_ZSZ1 Ignition coil signal Cyl. 1 ignition coil
4 Not used
5 M 31L Ground Ground point
6 M A_ZSR Ground Ground point
7 A P_ZSZ6 Ignition coil signal Cyl. 6 ignition coil
8 A P_ZSZ5 Ignition coil signal Cyl. 5 ignition coil
9 A P_ZSZ4 Ignition coil signal Cyl. 4 ignition coil


Thanks go to BMW of South Atlanta for the DME image, BMW 2001 Z3 MS43 Electrical Troubleshooting manual for the pins (seems to be the same as I can see) and spaghetticoder for the connector images.

REMEMBER Your DME is not a toy. You can it completely with minimal effort. You (I assume) are an adult (or at least adult enough to make your own decisions and live with your own mistakes. I make no promises about the validity of the data here, but it should be used as a 'guide'. If you can tap into the wire you need elsewhere, you might want to do it...

Last edited by JT_3K; 09-14-2011 at 09:01 AM.
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Old 09-14-2011, 09:33 AM   #2
Tate325xi
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Excellent write up. This will help a lot of people out.
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Old 09-14-2011, 09:35 AM   #3
Mango
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Old 09-14-2011, 09:42 AM   #4
JT_3K
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Thx. I thought it was about time! It's taken me a couple of days to find it all...

Does anyone know which of the parts listed at RealOEM is the internal pin for these connectors (harness side)?
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