System Diagram
WARNING: This page is about a different car, the 2006 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
Special Tool
(A): 09912-58442 (Fuel pressure gauge)
(B): 09912-58432 (Fuel pressure gauge hose)
(C): 09912-58421 (Checking tool set)
Courtesy of SUZUKI OF AMERICA CORP.