Toyota T100 1996 Service Manual page 321

5 Check mass air flow meter and engine coolant temp. sensor (See page
DI−22,DI−33).
OK
6 Check for spark and ignition (See page IG−1).
OK
Check and replace ECM (See page IN−26).
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (3RZ−FE)
NG Repair or replace.
NG Repair or replace.
DI−57