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• P1615

  P1615

  
  

  Diagnosis information - CAN PASM control unit, communication Diagnostic conditions

  The PASM control unit initially tests internal function sequences after wake-up. If they are OK, all diagnosable outputs are then tested and any faults are stored.
  PASM control unit wake-up through:
  
  
• Event-induced CAN message
• Ignition on
  
  

  Possible fault causes

• No power supply for PASM control unit
• PASM control unit incorrectly coded
• Short circuit or open circuit in the CAN drive
• PASM control unit faulty (in most cases the cause is not the PASM control unit but incorrect coding.)
  
  

  Fault effects

• Communication via the CAN drive is no longer possible
• No other control units are able to communicate with the PASM control unit.
  
  

  Affected contacts on the PASM control unit:

  
  
  Connector [A]:
• 1 ground supply - terminal 31
• 2 ground supply - terminal 31
• 3 power supply - terminal 15
• 4 power supply - terminal 30
• 5 power supply - terminal 30
• 61 CAN drive high
• 81 CAN drive low