12 14 523 Replacing pulse generator on inlet camshaft (M52TU / M54 / M56)

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, 2001 BMW 525i, and 2000 BMW 528i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Check stored fault messages.
Switch off ignition.
Remove suction filter housing. See 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING (M54)

NOTE: Arrow shows installation position of pulse generator.

Remove solenoid valve (1) of VANOS adjustment unit for inlet camshaft.

Installation:

Replace sealing ring.

Tightening torque. Refer to ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUE .

Fig 1: Removing Solenoid Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1) on cable duct (2).

Fig 2: Disconnecting Cable Duct Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on pulse generator (2).

Remove pulse generator (2) from cylinder head.

NOTE: To facilitate installation of pulse generator lead:

Secure an approx. 50 cm long auxiliary lead to plug connection of pulse generator.

Feed out end of pulse generator lead but only to such an extent that the auxiliary lead remains in the original routing in the intake system.

Remove pulse generator with lead.

Disconnect auxiliary lead from faulty pulse generator. Secure plug connection of new pulse generator to auxiliary lead.

Using auxiliary lead, feed new lead of pulse generator through to cable duct at bottom.

Fig 3: Removing Pulse Generator

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check sealing ring for possible damage, replace if necessary.

NOTE: Read out fault memory of DME control unit. Now clear the fault memory. Refer to SELF-DIAGNOSTICS - 6-CYLINDER