BMW 7 Series: Ignition Coil
NOTES ON CHECKING IGNITION SYSTEM
Troubleshooting
- Fault in fuel injection system
- Spark plug faults
- Ignition coil faults
- Further fault patterns with evaluation
- Additional fault notes for troubleshooting
Oscillograms
- Normal oscillogram
- Oscillograms of ignition coils from different manufacturers
Check
- Secondary signal for stationary ignition distribution
REPLACING IGNITION COILS (N63)
Necessary preliminary tasks
- Read out fault memory of DME control unit.
- Check stored error/fault messages.
- Switch off ignition.
- Remove left and right INTAKE FILTER HOUSINGS.
IMPORTANT: Ignition coils must not be fouled by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
Unlock plug catch (1) on ignition coil (2) and disconnect plug.
Pull ignition coil (2) up and out.
This procedure is applicable to all ignition coils.
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Fig. 18: Pulling Ignition Coil
Installation: Check that rubber seal of ignition coil (1) is correctly seated.
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Fig. 19: Installing Rubber Seal Of Ignition Coil
Installation: Push plug (1) with plug catch (2) open onto ignition coil.
Carefully close plug catch (2) in direction of arrow.
The plug catch must snap into place without great effort.
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Fig. 20: Pushing Plug With Plug Catch Onto Ignition Coil
NOTE: Now clear the fault memory.
READ NEXT:
Coding Control Module (DME/DDE)
Switch off ignition.
Connect MoDiC or DIS/GT1 Tester.
Switch on ignition.
Select "Coding" program.
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of
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 installing CONTROL UNITS !
Necessary preliminary work
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SEE MORE:
Checking Rim For Lateral And Radial Runout
Necessary preliminary tasks
Remove WHEEL
Check WHEEL for lateral and radial runout
Remove TYRE from disc wheel
Remove dirt from rim well and rim flange
IMPORTANT: Disc wheels are not allowed to be repaired!
Mount disc wheel in balancing machine.
Fig. 30: Identifying Disc Wheel On Wheel Balanc
Bonding Aluminium On Steel
IMPORTANT: Conform with safety regulations
Overview of topics
Equipment
Preparing the surface
Bonding coat
Hardening times
Subsequent treatment
1.0 Equipment
Sandpaper
CLEANING AGENT R1
NOTES ON ADHESIVE K1
CARTRIDGE GUN
2.0 Preparation of surface
2.1 Steel surface
Grind bonding surfa
