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 VIN N - Through Convertible Chassis No. X7020000 And Through Chassis No. X2020000 On All Other Models)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Emission Control System Vacuum Diagram (Saab 9.3 2.0L Turbo VIN N - After Convertible Chassis No. X7020000 And After Chassis No. X2020000 On All Other Models)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 3: Emission Control System Vacuum Diagram (Saab 9.3 2.0L Turbo VIN P - After Convertible Chassis No. X7020000 And After Chassis No. X2020000 On All Other Models)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 4: Emission Control System Vacuum Diagram (Saab 9.3 2.3L Turbo VIN G)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 5: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN E - Through Chassis No. X3020000)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 6: Emission Control System Vacuum Diagram (Saab 9.5 2.3L Turbo VIN E - From Chassis No. X3020001)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 7: Emission Control System Vacuum Diagram (Saab 9.5 3.0L Turbo VIN Z - Through Chassis No. X3020000)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 8: Emission Control System Vacuum Diagram (Saab 9.5 3.0L Turbo VIN Z - From Chassis No. X3020001)

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Courtesy of SAAB-SCANIA OF AMERICA, INC.