Toyota Land Cruiser 1988 Repair Manual page 139

Fl-8 EFI SYSTEM - Inspection Precautions
5. Check that there are no fuel leaks after performing any
maintenance on the fuel system.
(a) With engine stopped, turn the ignition switch ON.
(b) Using a service wire, short terminals +Band FP of
the check connector.
(c) When the fuel return hose is pinched, the pressure
within high pressure line will rise to approx. 4 kg I
cm
2
(57 psi, 392 kPa). In this state, check to see that
there are no leaks from any part of the fuel system.
CAUTION: Always pinch the hose. Avoid bend-
ing as it may cause the hose to crack.