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:
Replacing Rear Passenger Compartment A/C Control Panel Fan Motor
Necessary preliminary work
Remove REAR PASSENGER COMPARTMENT A/C CONTROL PANEL
Release screws (1).
Remove fan motor (3) from A/C control panel (2).
Installation note:
Make sure pins (4) are correctly seated on fan motor (3).
Fig. 90: Identifying A/C Control Panel, Fan Motor And Screws
REPLACIN
Removing And Installing/Replacing Right High Pressure Pump (N63)
WARNING: Observe warning on cylinder head cover.
Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short
circuit on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature
below 40ºC.
IMPORTANT: Wea
