volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Checking fuel metering valveN 290, > < Removing and installing fuel pressure senderG 247
Checking fuel pressure senderG 247
Checking fuel pressure sender -G 247-
→ Chapter „Safety precautions“
→ Chapter „Rules for cleanliness“
»Carry out the following work sequence«
–  Remove engine cover panel → Chapter.
  Note
   
t  Fuel pressure sender -G 247--1- is located in fuel rail. It measures the current fuel pressure in the high-pressure system and transmits a voltage signal to the engine control unit -J623-.
t  If it is not possible to start engine, but with connector removed engine start is OK, fuel pressure sender -G 247- is faulty.
t  With connector removed, a substitute value is taken from control unit for starting. If engine start is not possible with connector removed, the problem is not on fuel pressure sender -G 247-.
t  In the event of sender failure, pressure regulation is controlled using a map from the engine control unit.
t  In back-up function, the maximum engine speed is limited to approx. 3000 rpm.
  A23-10420
–  Disconnect electrical connector -1- on fuel pressure sender -G 247-.
–  Perform check as described.
t  Perform electrical checks on fuel pressure sender -G 247- using the »Guided fault finding«.
  A23-10420

Checking fuel metering valveN 290, > < Removing and installing fuel pressure senderG 247