Exhaust Gas RECIRCULATION Valve, Checking

Special tools and workshop equipment required 

• Hand vacuum pump VAG1390
  Fig 1: Identifying Hand Vacuum Pump - V.A.G 1390

  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Test Sequence 

-- Remove connection pipe between charge air pipe and motor for intake flap.

-- Disconnect vacuum hose at EGR valve.

-- Connect hand vacuum pump to the valve.

-- Operate hand vacuum pump and observe diaphragm rod.

Fig 2: Identifying Diaphragm Rod

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Diaphragm rod must move in direction of arrow.

-- Disconnect hose of hand vacuum pump from EGR valve.

Diaphragm rod must move back in opposite direction of arrow into the output position.