Volkswagen Passat Workshop Service and Repair Manuals

Engine code 1Z, AHU

•      1 -     → Intake hose
•      2 -     Hose, black
•      3 -     Charge pressure control solenoid valve (N75)
•      4 -     Charge air control pressure unit
•      5 -     Hose, blue
•      6 -     Turbocharger
•      7 -     Hose, red

Engine code AAZ

•      1 -     → Two-way valve
•      2 -     To vacuum pump
•      3 -     Turbocharger (KKK)
•      4 -     Charge pressure control valve
•      5 -     Turbocharger (Garrett)
•      6 -     Charge pressure control valve

Engine code AFN

• Air cleaner
• Exhaust gas recirculation valve (N18)
• Diesel direct injection system control unit (J248)
• Pressure unit
• ◆ For charge pressure control
• Exhaust gas recirculation valve (mechanical)
• ◆ Checking
• ◆ Checking activation

=> Repair Group 01; Self-diagnosis; Final control diagnosis

• Brake servo
• Solenoid valve for charge pressure control (N75)
• Vacuum reservoir

• Non-return valve
• ◆ White connection to charge pressure control solenoid valve item 7
• Non-return valve
• Vacuum pump