Toyota T100 1996 Service Manual page 521

INSPECTION PROCEDURE
TOYOTA hand−held tester:
1 Connect TOYOTA hand−held tester and check operation of fuel pump.
ON
Fuel Inlet Hose
BE6653
A00773
NG
2 Check for ECM power source circuit (See page DI−244).
OK
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (5VZ−FE)
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and push the TOYOTA hand−
held tester main switch ON.
(c) Use "ACTIVE TEST" mode to operate the fuel pump.
CHECK:
Check for fuel pressure in the fuel inlet hose when it is pinched
off.
OK:
A00788
There is pressure in the fuel inlet hose.
HINT:
At this time, you will hear a fuel flowing noise.
OK Go to step 7.
NG Repair or replace.
DI−257