BMW X5: Engine Wiring Loom
REPLACING WIRING HARNESS SECTION FOR ENGINE (N62)
Necessary preliminary tasks:
- Read out DME fault memory
- Disconnect battery negative lead
- ENGINE BONNET/HOOD in assembly position
- Remove FRESH AIR DUCT on right and if necessary on left
- Remove center of ASSEMBLY PARTITION WALL
- Remove intake air manifold
- Remove underbody protection at front/rear
- Remove REINFORCEMENT PLATE
- Remove ELECTRIC FAN with fan cowl
- Remove right exhaust manifold
- Remove STARTER MOTOR
- Remove ALTERNATOR
Release screws (2).
Detach electronics box cover (1) from fixture (3) in direction of arrow towards
right.
Installation:
Secure electronics box cover (1) in direction of arrow on left in fixture
(3).
Fig. 71: Detaching Electronics Box Cover From Fixture
Unfasten following plug connections:
Fig. 72: Identifying Plug Connections (1 Of 4)
- Air conditioner compressor
- Oil-pressure switch
- VANOS solenoid valves 1-4
- Knock sensor, right and left
- Throttle-valve actuator
- Air-mass sensor
- Tank venting valve
- Plug connection BSD alternator
- VANOS solenoid valves 5-8
- Coolant temperature sensor
- Map thermostat
Unfasten following plug connections:
Fig. 73: Identifying Plug Connections (2 Of 4)
- Exhaust camshaft sensor
- VVT sensor (5 to 8)
- Inlet camshaft sensor
- Injection wiring harness (5 to 8)
- VVT servodrive (5 to 8)
- Release screws.
- VVT servodrive (1 to 4)
- Injection wiring harness (1 to 4)
- Inlet camshaft sensor
- Exhaust camshaft sensor
- VVT sensor (1 to 4)
- Differential pressure sensor
- DISA gear
Unfasten following plug connections:
Fig. 74: Identifying Plug Connections (3 Of 4)
- Automatic transmission
- Not used
- Monitor sensor, left and right
- Term. 50 starter motor
- Crankshaft sensor
- Oil level sensor
- Control sensors (oxygen sensors)
Unfasten following plug connections:
Fig. 75: Identifying Plug Connections (4 Of 4)
- Ground connection
- Ground connection
- DME module 1 and 2
- Remove profile seal (4) in direction of arrow
-
- VVT control unit
- IVM integrated supply module
Installation:
Fit profile seals correctly.
Check for water leaks.
Assemble engine.
NOTE: Check function of DME.
Check electronics box cover and rubber grommets on equipment carrier for
watertightness.
REPLACING WIRING HARNESS SECTION FOR IGNITION COIL (N62, N62TU)
Necessary preliminary tasks:
- Read out fault memory of DME control unit; if necessary, work through
test schedules
- Switch off ignition
- Remove RIGHT FRESH AIR DUCT
Installation:
Make sure seal of wiring harness section for ignition coils is correctly
installed in electronics box.
Unlock stopper (1) in direction of arrow.
Unfasten screws.
Lift out cover (2).
Fig. 76: Unlocking Stopper
REFERENCE CHART
NOTE: Now clear the fault memory.
REMOVING AND INSTALLING/REPLACING WIRING HARNESS SECTION FOR FUEL
INJECTORS ON LEFT OR RIGHT (N62, N62TU)
Necessary preliminary tasks:
- Disconnect battery negative lead
- Remove ACOUSTIC COVER
- Remove ignition coil cover
NOTE: The procedure is identical for both sides.
Unfasten screws.
Unlock plug (1) and remove.
Remove positioning motor for eccentric shaft.
Unlock plugs on fuel injectors and disconnect.
Remove wiring harness.
Fig. 77: Locating Plug And Screws
READ NEXT:
REMOVING AND INSTALLING/REPLACING OIL PRESSURE SWITCH (N62, N62TU)
Necessary preliminary tasks:
Switch off ignition
E65/E66 only: Remove intake filter housing
E53 only: Remove intake hood with air
REMOVING AND INSTALLING/REPLACING ELECTRONICS BOX
IMPORTANT: Read and comply with notes on PROTECTION AGAINST
ELECTROSTATIC DAMAGE (ESD PROTECTION).
NOTE: Follow instructions for removing and install
SEE MORE:
WARNING: Danger of poisoning if oil is ingested/absorbed
through the skin!
Risk of injury if oil comes into contact with eyes and skin!
IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the
hydraulic
system.
Close off pipe connections with plugs.
NOTE: A film of grease o
Engine adaptation values can be broken down into two categories:
Additive Mixture Adaptation - additive adaptation refers to "long term
fuel trim". These adaptation are
made by the ECM (DME) at idle during "closed loop" fuel control. These
values are measured in
milliseconds and are expresse