Fuel Pressure Check: Troubleshooting
WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Before using the following flow, check to make sure that battery voltage is higher than 11 V. If battery voltage is low, pressure becomes lower than specification even if fuel pump and line are in good condition.
Courtesy of SUZUKI OF AMERICA CORP.