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. 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 THE 48 V ELECTRICAL SYSTEM .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
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 THE CONTROL UNIT HOLDER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
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: 61 35... NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION

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.

Loosen clamp (1) .
Loosen clamps (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Release screws (1) .
Guide out and remove the support (2) for the intake plenum.

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Unlock and disconnect plug connections (1) .
Unlock plug connection (2) and disconnect.
Unlock plug connection (3) and disconnect.
Release the clamps (arrows).

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Unlock and disconnect the plug connections (1) and (2) .
Release the clamps (arrows).

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Loosen screws (1) .
Unlock the lock (arrow).
Remove the wiring harness section (2) and put to one side.

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Loosen screws (1) .
Feed out the engine wiring harness (2) for the sensor system 1 and set it aside.

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Unlock and disconnect plug connections (1) .
Loosen the clamp (arrow).

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Unlock plug connection (1) and disconnect.
Loosen nuts (2) .
Release the positive battery cable (3) from the holder (4) .

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Loosen the expanding rivet (1) .
Undo fir tree clip (2) .
Loosen the clamp (arrow).

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

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Unlock plug connection (1) and disconnect.
Loosen the clamp (arrow).

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

Courtesy of BMW OF NORTH AMERICA, INC.