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• P1610

  P1610

  
  

  Diagnosis information - CAN

  
  

  Air-conditioning system regulator communication Diagnostic conditions

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

  Possible fault causes

• No power supply for air-conditioning system regulator
• Air-conditioning system regulator incorrectly coded
• Short circuit or open circuit in the CAN comfort
• Air-conditioning system regulator faulty (in most cases the cause is not the air-conditioning system regulator but incorrect coding.)
  
  

  Fault effects

• Communication via the CAN comfort is no longer possible.
• No other control units are able to communicate with the air-conditioning system regulator.
  
  

  Affected contacts on air-conditioning system regulator

  
  
  Connector [C]:
• 17 CAN comfort high
• 18 CAN comfort low
  
  
  Connector [E]:
• 5 power supply - terminal 30
• 9 ground supply - terminal 31
• 10 ground supply - terminal 31