Tacoma PreRunner Reg Cab 2WD L4-2.7L (3RZ-FE) (1999)
5. If you have no TOYOTA hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
6. Pinch the fuel return hose. The pressure in high pressure line will rise to approx. 400 kPa (4 kg/sq.cm, 57 psi). In this state, check to see
that there are no leaks from any part of the fuel system.
NOTE: Always pinch the hose. Avoid bending as it may cause to hose to crack.
7. Turn the ignition switch to LOCK.
8. Disconnect the TOYOTA hand-held tester from the DLC3.