FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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12 51 001 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 12 00 ... Instructions For Disconnecting and Connecting Battery
Disconnect battery negative lead from battery and lay to one side
- Remove lower section of microfilter housing 64 31 092 Removing and Installing/Replacing Microfilter Housing (Lower Section)
- Remove intake air manifold Service and Repair
- Remove cylinder head cover Service and Repair





Unlock fasteners (1) from below and slide upwards approx. 10 mm.
Unlock locks (2) in direction of arrow.
Remove cover (3).





Unlock plug on control unit and disconnect.
Unlock tab (1), pull contact carrier (2) in direction of arrow out of housing.





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.





Illustration shows cylinder head cover.
Release screws and remove holder (1).
Tightening torque 12 52 1AZ [1][2]Specifications.










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