BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engine
   + 3.1.2. Specifications
   + 3.2. Dismantle and capital repairs of the engine
   - 3.3. Engine electric equipment
      3.3.2. Specifications
      3.3.3. The battery - launch of the engine in emergency situations
      3.3.4. Removal and installation of the battery
      3.3.5. Power cables
      - 3.3.6. System of ignition Check of system of ignition Check and installation of the moment of ignition (only for the TCI system) Ignition distributor Ignition coil Shaper of impulses and block of electronic ignition A gap in the shaper sensor (TCI system) Sensors of system of ignition
      + 3.3.7. System of a charge of the battery
      + 3.3.8. System of launch of the engine
      3.3.9. Malfunctions of the generator
      3.3.10. Main malfunctions of electric equipment
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips

fb0c4883 Ignition coil


Details of system of ignition of TCI

1. Coil wire
2. Ignition coil
3. Tip of a high-voltage wire
4. Candle
5. Electronic block of ignition (Bosch)
6. Electronic block of ignition Siemens/Telefunken)
7. Burn down conductings
8. The distributor case with small weights of the centrifugal regulator
9. Vacuum regulator
10, 15. Spring ring
11. Bracket
12. Socket of the shaper of impulses
13. Shaper of impulses
14. Rotor plate
16. Dustproof screen
17. Runner
18. Rotor teeth
19. Pin
20. Distributor cover

On cars with the Motronic system malfunction of the processor ECU block can become the reason of failure of the coil of ignition. If there are suspicions on malfunction of the block at refusal of start of the engine, then it is necessary to check the coil.

Check and replacement

1. Designate and disconnect wires from the ignition coil.
2. Remove the coil and check a condition of the case, insulator and contacts.
3. Measure resistance of primary winding of the coil (TCI system).
4. On a part of the Motronic systems for measurement of resistance of primary winding take off a coil cap.
5. Measure resistance of a secondary winding. Resistance of a secondary winding is measured in the TCI system between a conclusion 1 (-) and a high-voltage conclusion.
6. Resistance of a secondary winding is measured in the Motronic system between conclusions 15 (+) coils and a high-voltage conclusion.
7. If resistance considerably differ from standard (change of resistance depending on temperature is admissible), then replace the coil of ignition.
8. The coil is installed upside-down.