Vacuum hose connection diagram (BJB, BSU and BLS)

Location of branch pipes on the solenoid valve block of BJB, BSU engines:
1. Vacuum line connection (on the non-return valve for the brake booster)
2. EGR valve
3. Air damper
4. Air filter
5. Vacuum receiver
6. Vacuum drive on turbocharger

BLS engine vacuum hose connection diagram:
1. Electrical connector
2. Boost pressure control solenoid valve (N75)
3. Vacuum line tee
4. EGR cooler changeover valve (N345)
5. To the vacuum actuator of the bypass valve for the exhaust gas recirculation cooler
6. To the vacuum drive on the turbocharger
7. To air filter