Toyota T100 1996 Service Manual page 465

7 Check EGR vacuum modulator (See page EC−9).
OK
8 Check EGR valve (See page EC−9).
OK
9 Check value of EGR gas temp. sensor.
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) Select the "ACTIVE TEST" mode on the TOYOTA hand−held tester (EGR system ON).
(d) Race the engine at 4,000 rpm for 3 min.
CHECK:
Measure EGR gas temp. while racing engine at 4,000 rpm.
OK:
EGR gas temp. after 3 min.: 140°C (284°F) or more
OK
Check and replace ECM (See page
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (5VZ−FE)
NG Repair or replace.
NG Repair or replace.
NG Replace EGR gas temp. sensor.
IN−26 ).
DI−201