Removing the wiring harness section for the sensor system of cylinders 5 to 8

Precondition

Ignition is switched off.

NOTE: RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.

Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .

NOTE: RISK OF DAMAGE
Malfunction or failure of the DME.
Grounding points that are not screwed on may lead to malfunction or failure of the DME.

Screw all screw points of the cable ducts on again. Some of the screw points are also grounding points.

NOTE: TECHNICAL INFORMATION
If control units are disconnected, fault memory entries and functional limitations may occur.
The fault memory entries must be read out and, if necessary, deleted.

Preliminary work

Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING COVER FOR THE RIGHT DME CONTROL UNIT .
Refer to REMOVING COVER FOR THE DME CONTROL UNIT ON LEFT .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE MOUNT OF THE HOOD SEAL .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to RELEASING THE LEFT CHARGE AIR LINE FROM THE TURBOCHARGER .
Refer to REMOVING BOTH FRONT-END STRUTS .
Refer to REMOVING FRONT CROSS CONNECTION (FRONT-END STRUT REMOVED) .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
Refer to REMOVING FAN COWL .
Refer to DRAINING THE COOLANT FOR THE CHARGE AIR COOLER .
Refer to REMOVING LEFT CHARGE AIR COOLER .
Refer to REMOVING LEFT THROTTLE VALVE ASSEMBLY .
Refer to REMOVING THE FRONT LEFT AND RIGHT WHEELS .
Refer to REMOVING THE REAR SECTION OF THE WHEEL ARCH COVER ON THE FRONT LEFT AND RIGHT .
Refer to MOVE THE ENGINE TO THE INSTALLATION POSITION .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING THE REINFORCEMENT STRUT FROM THE ENGINE MOUNTING ON THE LEFT AND RIGHT .
Refer to DETACHING THE WIRING HARNESS OF THE EPS FROM THE FRONT AXLE SUPPORT .
Refer to REMOVING LEFT AND RIGHT BRAKE VENTILATION DUCT .
Refer to REMOVING THE WHEEL ARCH COVER ON THE FRONT LEFT AND BOTTOM RIGHT .
Refer to IF INSTALLED: REMOVING THE SILENCER OF THE STATIONARY HEATING .
Refer to LOOSENING THE ANTI-ROLL BAR LINK ON THE LEFT AND RIGHT FROM THE ANTI-ROLL BAR .
Refer to RELEASING THE FRONT LEFT AND RIGHT BRAKE CALIPERS .
Refer to DETACHING THE CABLE OF THE WHEEL RPM SENSOR ON THE LEFT AND RIGHT .
Refer to RELEASING CABLE FROM VERTICAL ACCELERATION SENSOR ON LEFT AND RIGHT .
Refer to REMOVING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
Refer to IF INSTALLED: DISCONNECTING THE PLUG CONNECTIONS OF THE ACTIVE STABILIZER .
Refer to REMOVING THE UNIVERSAL JOINT ON THE STEERING GEAR .
Refer to RELEASING THE THERMOSTAT OR TRANSMISSION OIL COOLER LINE FROM THE FRONT SUBFRAME .
Refer to DETACHING COOLANT HOSES FROM THE FRONT AXLE SUPPORT .
Refer to PREPARING THE MOBILE TABLE LIFT .
Refer to POSITIONING THE MOBILE LIFTING TABLE .
Refer to DETACHING THE UPPER WISHBONE FROM THE SWIVEL BEARING .
Refer to DETACHING THE SPRING STRUT AT THE BOTTOM OF THE WISHBONE .
Refer to RELEASING THE SCREWS ON THE LEFT AND RIGHT FRONT AXLE SUPPORT .
Refer to COMPLETELY REMOVING FRONT AXLE .
Refer to REMOVING THE LEFT ENGINE SUPPORT BRACKET .
Refer to RELEASING AIR CONDITIONING COMPRESSOR .
Refer to REMOVING INTAKE SYSTEM .

Wiring harness section for the sensor system for cylinders 5 to 8

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and remove the cover (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock all connectors (1) from the rear to the front and then detach them off of the DME control unit.

Courtesy of BMW OF NORTH AMERICA, INC.
Detach all cables (1) from the DME control unit holder.

Courtesy of BMW OF NORTH AMERICA, INC.
Detach all cables (1) from the DME control unit holder.

Courtesy of BMW OF NORTH AMERICA, INC.
Loosen screws (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock connector (1) on DME control unit of cylinders 5 to 8 and detach.
Unlock and disconnect the connector (2) at the pressure sensor on the left intake plenum.
Unlock and detach connector (3) from rail pressure sensor.
Unlock connector (4) on the camshaft position sensors and detach.
Unlock connector (5) on the high pressure pump and detach.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock and detach the connector (6) on the hot film air mass meter.
Unlock connector (7) on the tank vent valve and detach.
Unlock connector (8) on the Lambda oxygen sensor and on the monitoring oxygen sensor and detach.
Unlock connector (1) for the wiring harness section for the sensor system of cylinders 1 to 4 and detach.
Unlock connector (2) on the electrical controller drive of the wastegate valve and detach.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock connector (1) on the knock sensors of cylinders 5 to 8 and detach.

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Unlock connector (1) on the VANOS solenoid valve on the exhaust side and detach.
Unlock connector (2) on the VANOS solenoid valve on the intake side and detach.
Unlock connector (3) on the air conditioning compressor and detach.
Unlock and disconnect the connector (4) from the boost pressure sensor.
Release the wiring harness section for the sensor system of cylinders 5 to 8 from the clamps, guide it out and remove it.

Courtesy of BMW OF NORTH AMERICA, INC.