Replacing Wiring Harness Section for Engine

12 51 001 - Replacing wiring harness section for engine (N52)





Important!
Read and comply with notes on protection against electrostatic damage (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).





Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition
- Follow instructions for disconnecting and connecting battery Instructions for Disconnecting and Connecting Battery
Disconnect battery negative lead from battery and lay to one side
- Remove fresh air duct Service and Repair
- Remove intake air manifold
- Remove DME control unit Service and Repair





E60, E61, E63, E64 only:
Unlock plug on control unit and disconnect.
Unlock tab (1), pull contact carrier (2) in direction of arrow out of housing.





E60, E61, E63, E64 only:
Unlock slide (2) in bore holes (1) and pull out of housing.
Unlock tab (3), pull contact carrier (4) in direction of arrow out of housing.
Unlock and disconnect all plug connections of engine wiring harness section in electronics box.





E65 only:
Press release tabs (1) and pull slide (2) in direction of arrow out of housing.





E65 only:
Press release tabs (1) in direction of arrow and pull contact carrier (2) in direction of arrow out of housing.
Unlock and disconnect all plug connections of engine wiring harness section in electronics box.





Release screws and remove holder (1).
Tightening torque 12 52 1AZ [1][2]Power and Ground Distribution.










Note:
Check stored fault messages.
Now clear the fault memory.