Connection For Vacuum Hoses - Volkswagen CJDA Workshop Manual

3
Industriemotoren - Industrial Engines 2009 ▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
– Exit diagnosis function.
– Switch off ignition.
If the linkage does not move with the engine idling but the sole-
noid valve operates:
– Pull vacuum hose off charge pressure control vacuum unit.
– Connect hand vacuum pump -V.A.G 1390- to charge pres-
sure control vacuum unit, and check whether linkage is free
to move.
If the linkage is not free to move:
– Turbocharger defective, renew vacuum unit.
If linkage does not move because solenoid valve is not working:
– Check charge pressure control solenoid valve -N75-
⇒ P age
341.
If specification in display zone 4 remains unchanged:
– Check vacuum hoses for leaks. Vacuum hose schematic di-
⇒ P age
agram 334.
Note
After the vacuum hoses have been checked for leaks, the en-
gine must be restarted.
– Check position sender for charge pressure positioner -G581-
⇒ P age
345.
If the charge pressure difference between "OFF" and "ON" in
display zone 3 is not at least 100 mbar:
– Check charge pressure sender -G31-
– Check charge air system for leaks
If charge pressure sender -G31- and charge air system are OK:
– Turbocharger defective; renew turbocharger
Removing and installing turbocharger.
2.3

Connection for vacuum hoses

Engine codes CJDA, CJDD
Engine codes CPYA, CPYB, CPYC, CPYD, CPYE
Testing vacuum system
Caution
Do not kink, twist or crush the vacuum lines when routing.
Otherwise the turbocharger may fail.
334 Repair Group 21 - Turbocharging/supercharging
⇒ P age
⇒ P age
331.
⇒ P age
335.
⇒ P age 338
343.
⇒ P age
326,
⇒ P age
336.