Vacuum Diagrams: Introduction

This article contains underhood views or schematics of vacuum hose routing. Use these vacuum diagrams during visual inspection in BASIC DIAGNOSTIC PROCEDURES article. This will assist in identifying improperly routed vacuum hoses which cause driveability and/or computer indicated malfunctions.

NOTE: Always refer to Emission Control label in engine compartment before attempting service. If manual and label differ, use emission label specifications.

Fig 1: Emission Control System Vacuum Diagram (Saab 9.3 2.0L Turbo - Through Convertible Chassis No. Y7007159 And Through Chassis No. Y2022060 On All Other Models)

G00023617

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Emission Control System Vacuum Diagram (Saab 9.3 2.0L Turbo - Through Convertible Chassis No. Y7007159 And Through Chassis No. Y2022060 On All Other Models)

G00023601

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 3: Emission Control System Vacuum Diagram (Saab 9.3 2.0L Turbo - From Convertible Chassis No. Y7007160 And From Chassis No. Y2022061 On All Other Models)

G00023597

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 4: Emission Control System Vacuum Diagram (Saab 9.3 Viggen 2.3L Turbo VIN G - Through Convertible Chassis No. Y7007159 And Through Chassis No. Y2022060 On All Other Models)

G00023638

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 5: Emission Control System Vacuum Diagram (Saab 9.3 Viggen 2.3L Turbo VIN G - From Convertible Chassis No. Y7007160 And From Chassis No. Y2022061 On All Other Models)

G00023589

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 6: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN E - Through Chassis No. Y3047118)

G00023605

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 7: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN E - From Chassis No. Y3047119)

G00023585

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 8: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN G - Through Chassis No. Y3047118)

G00023606

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 9: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN G - From Chassis No. Y3047119)

G00023646

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 10: Emission Control System Vacuum Diagram (Saab 9.5 3.0L VIN Z - Through Chassis No. Y3040000)

G00023581

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 11: Emission Control System Vacuum Diagram (Saab 9.5 3.0L VIN Z - From Chassis No. Y3040001)

G00023594

Courtesy of SAAB-SCANIA OF AMERICA, INC.