Toyota T100 1996 Service Manual page 462

DI−198
INSPECTION PROCEDURE
TOYOTA hand−held tester:
1 Connect TOYOTA hand−held tester and read value of EGR gas temp. value.
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.
CHECK:
Read EGR gas temp. on the TOYOTA hand−held tester.
OK:
EGR gas temp.: 10°C (50°F) or more
HINT:
If there is an open circuit, the TOYOTA hand−held tester indicates 3.1°C (37.6°F).
NG
2 Check for open in harness or ECM.
ON
EGR Gas Temp.
Sensor
2
1
BE6653
P19555
NG
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
ECM
(c)
5 V
1421
CHECK:
THG
E6 E6
Read EGR gas temp. on the TOYOTA hand−held tester.
9 22
E2
E6 E6
OK:
E1
(M/T)(A/T)
A00046
− ENGINE (5VZ−FE)
OK Go to step 4.
Disconnect the EGR gas temp. sensor connector.
Connect the sensor wire harness terminals together.
Turn the ignition switch ON.
EGR gas temp.: 159°C (318.2°F)
OK Confirm good connection at sensor.
If OK, replace EGR gas temp. sensor.