Isuzu 4JA1 Workshop Manual page 260

6E-6 Engine Control System (4JH1)
High Altitude Spec
Legend
1. Vacuum Pump
2. White Stripe Vacuum Hose
3. EGR Solenoid Valve
4. EGR Valve
5. White Stripe Vacuum Hose
6. Vacuum Regulating Valve
7. Port S
8. Port Z
9. Blue Stripe Vacuum Hose
10. Turbocharger Solenoid Valve
11. White Stripe Vacuum Hose
12. Yellow Stripe Vacuum Hose
13. Vacuum Pressure Sensor
14. Turbocharger
RTW66EMF001101