P1624
Read the instructions below then 
start the fault diagnostic procedure.
Symptom: Automatic transmission not shifting gear.
CHECK ENGINE.
CHECK GEARBOX.
 
  
 
 
  
  
   
   
    
    
     
     
     CHECK ENGINE. Request (Bus from TCM).
    
    
     
    
    
   
   
  
   Fault symptoms
  
  
  
   
    
     
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       Automatic transmission not shifting gear.
        
        
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   On-Board Diagnostics
  
  
   
    Type of diagnosis:
   
   
   
  
  
  
   
    
     
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       Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
        
        
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    Enable criteria:
   
   
   
  
  
  
   
    
     
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       General conditions for this trouble code: When starting the engine, the atmospheric pressure must exceed 78 kPa and the engine coolant and intake air temperatures must exceed -7°C.
        
        
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    Fault criteria:
   
   
   
  
  
  
   
    
     
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       TCM requesting CHECK ENGINE.
        
        
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    Dependents:
   
   
   
  
  
  
   
  
  
  
   
    System reaction to a fault:
   
   
   
  
  
  
   
  
  
  
   
    OK report:
   
   
   
  
  
  
   
    
     
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       When TCM no longer requesting CHECK ENGINE.
        
        
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    Fault handling:
   
   (See “Fault diagnosis, general” for more information.)
   
   
  
  
  
   
    
     
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       CHECK ENGINE goes out and trouble code cleared immediately when TCM no longer requests CHECK ENGINE.
        
        
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   Diagnostic help
  
  
   Perform fault diagnosis on the automatic transmission.