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Home >> BMW >> 2011 >> 740i >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System - Repair (N54, 2011-2012) >> Electronic Switching Or Control Units >> 12 14 523 Replacing pulse generator on inlet camshaft (N54)

12 14 523 Replacing pulse generator on inlet camshaft (N54)

IMPORTANT: Aluminium screws/bolts must be replaced each time they are released. 

Aluminium screws/bolts are permitted with and without color coding (blue).

For reliable identification:

Jointing torque and angle of rotation must be observed without fail (risk of damage). 

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .

Necessary preliminary tasks: 

Release screws (1).

Tightening torque 13 62 6AZ .

Slide cable duct (2) to one side.

Fig 1: Identifying Cable Channel And Screws
G09846587Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Release screw.

Tightening torque 13 62 3AZ .

Remove pulse generator (2).

Fig 2: Locating Pulse Sensor Screw
G04751286Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check stored fault message.
Now clear the fault memory.