Main components of the MOTRONICsystem
| Main components of the MOTRONIC system | 
| 1. | 
       Control module
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| 2. | 
       Ignition coil
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| 3. | 
       Distributor
        | 
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| 4. | 
       Mass air flow sensor
        | 
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| 5. | 
       Crankshaft position sensor
        | 
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| 6. | 
       Camshaft position sensor
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| 7. | 
       Knock Detector
        
       
        | 
     |
| 8. | 
       Throttle position sensor
        | 
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| 9. | 
       Oxygen sensor
        | 
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| 10. | 
       Injectors
        | 
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| 11. | 
       Secondary air system (B234 for SE and US)
        | 
     |
| 12. | 
       Idle air control valve (IAC)
        | 
     |
| 13. | 
       Coolant temperature sensor
        | 
     |
