April 5, 2026: LEMON Manuals is launched! Read the announcement.

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: Vacuum diagrams for 2001 B2300, B2500, B3000, B4000 and Tribute are not available from manufacturer.

Fig 1: Vacuum Diagram - (B2300)

G00110110

Courtesy of FORD MOTOR CO.

Fig 2: Vacuum Diagram - (B2500)

G00110107

Courtesy of FORD MOTOR CO.

Fig 3: Vacuum Diagram - (B3000)

G00110108

Courtesy of FORD MOTOR CO.

Fig 4: Vacuum Diagram - (B4000)

G00110109

Courtesy of FORD MOTOR CO.

Fig 5: Vacuum Diagram (Miata)

G00032237

Courtesy of MAZDA MOTORS CORP.

Fig 6: Vacuum Diagram (Millenia 2.3L)

G97G06651

Courtesy of MAZDA MOTORS CORP.

Fig 7: Vacuum Diagram (Millenia 2.5L)

G99A04871

Courtesy of MAZDA MOTORS CORP.

Fig 8: Vacuum Diagram (MPV)

G99B54685

Courtesy of MAZDA MOTORS CORP.

Fig 9: Vacuum Diagram (Protege 1.6L)

G99E04873

Courtesy of MAZDA MOTORS CORP.

Fig 10: Vacuum Diagram (Protege 1.8L)

G00032239

Courtesy of MAZDA MOTORS CORP.

Fig 11: Vacuum Diagram - (Tribute 2.0L)

G00110111

Courtesy of FORD MOTOR CO.

Fig 12: Vacuum Diagram - (Tribute 3.0L)

G00110112

Courtesy of FORD MOTOR CO.

Fig 13: Vacuum Diagram (626 2.0L)

G00032238

Courtesy of MAZDA MOTORS CORP.

Fig 14: Vacuum Hose Routing (626 2.5L)

G98J12525

Courtesy of MAZDA MOTORS CORP.