Removing the engine wiring harness for sensor system 1

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 DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
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 THE SEAL FOR THE HOOD REAR .
Refer to REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING THE COWL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING ACOUSTIC COVER AT REAR .
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 COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
Refer to REMOVING BOTH FRONT-END STRUTS .
Refer to REMOVING FRONT CROSS CONNECTION .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE FAN COWL .
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 REAR UNDERBODY PROTECTION .
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 REMOVING TANK VENT VALVE .
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 (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.

Unlock the plug connections (1) and disconnect from the DME control unit.
Unlock plug connection (2) and disconnect from the PDM.
Release engine wiring harness for sensor system 1 from the clamps and set aside.

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Unlock plug connections (1) and disconnect from the auxiliary coolant pump.
Unlock plug connections (2) and disconnect from the boost pressure sensor.
Unlock plug connections (3) and disconnect from the temperature sensor.
Unlock plug connections (4) and disconnect from the boost pressure sensor.
Unlock plug connections (5) and disconnect cylinders 1 to 3 from the knock sensor.
Unlock plug connections (6) and disconnect from the heat management module.
Unlock plug connections (7) and disconnect from the temperature sensor on the cylinder head.
Unlock plug connections (8) and disconnect cylinders 4 to 6 from the knock sensor.

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Unlock the plug connections (1) end disconnect from the alternator.
Unlock plug connections (2) and disconnect from the heat management module.
Unlock the plug connect on (3) and disconnect from the temperature sensor on the crankcase.

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.

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

Courtesy of BMW OF NORTH AMERICA, INC.
For vehicles with rear wheel drive:
Unlock the plug connections (1) end disconnect horn the oil pressure sensor.
Unlock plug connections (2) and disconnect from the crankshaft sensor.
Unlock plug connections (3) and disconnect from the solenoid valve.
Unlock plug connections (4) and disconnect from the oil-level sensor.

Courtesy of BMW OF NORTH AMERICA, INC.
On vehicles with all-wheel drive:
Unlock and disconnect plug connections (1).
Release the clamps (arrows).
Feed out engine wiring harness (2) of sensor system 1 and set aside.

Courtesy of BMW OF NORTH AMERICA, INC.
On vehicles with all-wheel drive:
Unlock plug connection (1) and disconnect.
Release the clamps (arrows).
Feed out engine wiring harness (2) of sensor system 1 and set aside.

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

Courtesy of BMW OF NORTH AMERICA, INC.