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 the visual inspection in BASIC DIAGNOSTIC PROCEDURES article. This will assist in identifying improperly routed vacuum hoses, which cause driveability and/or computer-indicated malfunctions.

Fig 1: Evaporative Emission Control System Vacuum Diagram (MDX)

G00070962

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Evaporative Emission Control System Vacuum Diagram (RSX)

G00070963

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Evaporative Emission Control System Vacuum Diagram (3.2CL)

G00070964

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: Evaporative Emission Control System Vacuum Diagram (3.2TL)

G00070965

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: Evaporative Emission Control System Vacuum Diagram (3.5RL)

G00070966

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 6: Vacuum Diagram (MDX - 1 Of 2)

G00032279

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 7: Vacuum Diagram (MDX - 2 Of 2)

G00032280

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 8: Vacuum Diagram (RSX - 1 Of 4)

G00070912

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 9: Vacuum Diagram (RSX - 2 Of 4)

G00070913

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 10: Vacuum Diagram (RSX - 3 Of 4)

G00070914

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 11: Vacuum Diagram (RSX - 4 Of 4)

G00070915

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 12: Vacuum Diagram (3.2CL & 3.2TL - 1 Of 2)

G00032281

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 13: Vacuum Diagram (3.2CL & 3.2TL - 2 Of 2)

G00032282

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 14: Vacuum Diagram (3.5RL - 1 Of 2)

G00009608

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 15: Vacuum Diagram (3.5RL - 2 Of 2)

G00009609

Courtesy of AMERICAN HONDA MOTOR CO., INC.