Toyota 4A-FE Repair Manual page 84

-SST
EFI SYSTEM - Inspection Precautions Fl-13
EM7503
(c) When the fuel return hose is pinched, the pressure
within high pressure line will rise to approx. 4 kg/cm
2
(5 7 psi, 392 kPa} . In this state, check to see that
there are no leaks from any part of the fuel system.
NOTICE: Always pinch the hose. Avoid bending the
hose as it
may
cause the hose to crack.
(d) Remove SST from the check connector.
SST 09843-1 8020