Removing the engine wiring harness for sensor system 1

WARNING: Working on 12 V electrical system .
Risk of short circuits! Risk of fire!

Make sure that there is no charger connected to the jump start terminal in the engine compartment.
Detach battery ground lead from battery.
For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.

NOTE: RISK OF DAMAGE
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS) .
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults .

Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.

NOTE: TECHNICAL INFORMATION
Additional coolant can leakage. Make sure that no coolant enters the intake port of the cylinder head.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work

Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
Refer to DEACTIVATING ELECTRICAL SYSTEM .
Refer to REMOVING THE SEAL FOR THE HOOD REAR .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING WINDSHIELD PANEL COVER .
Refer to REMOVING THE CENTER COWL UPPER PART .
Refer to REMOVING THE CENTER FIREWALL LOWERING PART .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING ACOUSTIC COVER AT REAR .
Refer to REMOVING TANK VENT VALVE .
Refer to REMOVING THE DME CONTROL UNIT .
Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
Refer to REMOVING CONTROL UNIT BRACKET .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR .
Refer to IF INSTALLED: REMOVING THE UNDERBODY PROTECTION OF THE STEERING SYSTEM .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to IF INSTALLED: PARTIALLY RELEASING THE ENGINE OIL COOLER .
Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
Refer to CONNECTING THE COOLANT LINES FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to IF INSTALLED: SECURING THE ENGINE OIL COOLER .
Refer to REMOVING THE INTAKE PLENUM .

Engine wiring harness for sensor system 1

Courtesy of BMW OF NORTH AMERICA, INC.

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 PROTECTION (ELECTRO STATIC DISCHARGE) .

NOTE: RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections .
Sheared wires can cause a short circuit .

Do not pull on wires when disconnecting connectors and plug connections.

Feed out the wiring harness section (1) for sensor system 1 from the bracket (2) and place to one side.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock and disconnect plug connections (1).
Unlock plug connection (2) and disconnect.
Unlock plug connection (3) and disconnect.
Release the clamps (arrows).

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock and disconnect the plug connections (1) and (2).
Release the clamps (arrows).

Courtesy of BMW OF NORTH AMERICA, INC.
Loosen screws (1).
Unlock the lock (arrow).
Remove the wiring harness section (2) and put to one side.

Courtesy of BMW OF NORTH AMERICA, INC.
Loosen screws (1).
Feed out engine wiring harness (2) of sensor system 1 and set aside.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock and disconnect plug connections (1).
Loosen the clamp (arrow).

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock plug connection (1) and disconnect.
Loosen nuts (2).
Release the positive battery cable (3) from the holder (4).

Courtesy of BMW OF NORTH AMERICA, INC.
Loosen the expanding rivet (1).
Undo Christmas tree clip (2).
Loosen the clamp (arrow).

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Loosen expanding rivet (1).
Release the clamps (arrows).
Lower the acoustic cover (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock plug connection (1) and disconnect.
Loosen the clamp (arrow).

Courtesy of BMW OF NORTH AMERICA, INC.
Guide out and remove the engine wiring harness (1) for sensor system 1.

Courtesy of BMW OF NORTH AMERICA, INC.