28-1
 
     
Ignition system, checking 
     
General notes on ignition system
 
     
Note:  
     
The battery should only be disconnected and 
reconnected when the ignition is turned off, 
since otherwise the Engine Control Module 
(ECM) can be damaged. 
     For the electric components to work properly, a 
voltage of at least 12.7 V is required. 
     It is possible that the control module will 
recognize a malfunction and store a DTC during 
some tests. After completing all tests and 
repairs, DTC memory should therefore be 
checked and erased if necessary. 
     If the engine only starts briefly and then turns 
off again after troubleshooting, repair or 
checking of the components, it may be that the 
immobilizer is blocking the Engine Control 
Module (ECM). DTC memory must then be 
checked and if necessary, control module must 
be adapted. 
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