Porsche Diagnostic and Repair Information ,Wiring Diagrams. DTC. TSB. Types: TSB, DTC, Wiring Diagrams, OEM Procedures. Trusted by more than 400,000 technicians. OEM accurate fix for faster repairs. Repair Procedures and Labor Times. Factory Auto Repair info. Request A Demo Today. Factory-Correct Diagrams. Factory Part Numbers. Maintenance Schedules. Repair Procedures. Labor Times. Types: TSB, DTC.car insurance, auto insurance, auto, car, vehicle, insurance, quote, quotes, online, insurance，auto, autos, car, cars, vehicle, vehicles, used car, pre-owned car, pre-owned vehicle, used auto, used vehicle, rental，auto racing news, car racing news

• P2634

  P2634

  
  

  Diagnosis information - DME V6 DFI Fuel pump relay driver 2 (right)

  NOTE: When this fault is stored, the right-hand fuel pump is continuously activated.

  
  

  NOTE: Any stored faults of the fuel supply (oxygen sensing range [FRAO] and [FRAU]) could be a result of insufficient fuel supply at full load in one-pump operation.

  
  

  NOTE: Fuel pump 2 (right-hand) is activated briefly by the vehicle electrical system control unit when the driver's door is opened. A short circuit to B+ or ground can also be caused by a fault in this control line or in the vehicle electrical system control unit.

  
  

  Diagnostic conditions

• Battery positive voltage > 10 V
• Fuel tank level Less than 15 liters or Greater than 60 liters
• Engine running > 10 seconds
  
  

  Possible fault causes

• Short circuit to B+
• Short circuit to ground
• Open circuit in line
• Fuse FE 13 faulty (fuse carrier in plenum panel E-box)
• Fuel pump 2 relay faulty
• Vehicle electrical system control unit faulty
  
  

  Affected contacts on the DME control unit connector

  
  
  Connector [B]:
• Contact 27
  
  

  Affected contacts on the fuel pump relay connector

• Contact 85