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)

1. Air conditioner compressor
2. Oil-pressure switch
3. VANOS solenoid valves 1-4
4. Knock sensor, right and left
5. Throttle-valve actuator
6. Air-mass sensor
7. Tank venting valve
8. Plug connection BSD alternator
9. VANOS solenoid valves 5-8
10. Coolant temperature sensor
11. Map thermostat

Unfasten following plug connections:

Fig. 73: Identifying Plug Connections (2 Of 4)

1. Exhaust camshaft sensor
2. VVT sensor (5 to 8)
3. Inlet camshaft sensor
4. Injection wiring harness (5 to 8)
5. VVT servodrive (5 to 8)
6. Release screws.
7. VVT servodrive (1 to 4)
8. Injection wiring harness (1 to 4)
9. Inlet camshaft sensor
10. Exhaust camshaft sensor
11. VVT sensor (1 to 4)
12. Differential pressure sensor
13. DISA gear

Unfasten following plug connections:

Fig. 74: Identifying Plug Connections (3 Of 4)

1. Automatic transmission
2. Not used
3. Monitor sensor, left and right
4. Term. 50 starter motor
5. Crankshaft sensor
6. Oil level sensor
7. Control sensors (oxygen sensors)

Unfasten following plug connections:

Fig. 75: Identifying Plug Connections (4 Of 4)

1. Ground connection
2. Ground connection
3. DME module 1 and 2
4. Remove profile seal (4) in direction of arrow
5.  
6. VVT control unit
7. 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

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