Siemens Ms 42.0 And Ms 43.0; Ecm Pin Assignments - BMW 5251 Service Manual

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Fuel Injection
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Working inside E-box, disconnect ECM harness connector
(arrow) by releasing fastener and pivoting connector up and
off ECM.
CA U T I O W
Be sure ignition is OFF before disconnecting or reconnecting
DME system components.
Remove ECM from retaining brackets and lift off holder.
Installation is reverse of removal
Before attempting to start engine, use BMW service tester
DISplus, MoDiC, GTl or equivalent:
*
Code replacement ECM with application information (i.e
engine code, transmission type, etc.).
Align ECM to EWS (electronic immobilizer).
Siemens MS 42.0 and MS 43.0
ECM pin assignments
ECM pin assignments are given in Table c. For engine man-
agement system schematics, see ELE Electrical Wiring Di-
agrams.
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CAUTIOW
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A l ~ a y s wait at least one mfnule after turning off the ignition
before remov;ng [he connecror irom rhe ECM. If the con-
nector is removed before this time, residual power in the
system relay may damage the ECM.
Always connect or disconnect the control module con-
nector and meter probes with the ignition off.
When making checks at the ECM itself, a breakout box
should be used to allow tests to be made with the connector
attached to the ECM. This also prevents damage to the small
terminals in the connector. As an alternative, the harness
connector housing can be separated so that electrical checks
can be made from the back of the connector.
Table c. Siemens MS 42.0 and MS 43.0 ECM pin assignments
Pin lslgnal l~om~onentlfunction
1
Notes
Connector X60001 9-pin black
1
loutput I~erminai
15
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Unloeder relay terminal
15
2
I 1
Not used
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3
Not used
4
Ground Ground Ground point