Toyota T100 1996 Service Manual page 424

DI−160
3 Check for open in harness or ECM.
ON
Engine Coolant
Temp. Sensor
2
1
For M/T
THW
For A/T
E2 THW
BE6653
P19553
P20224
P20200
NG
Confirm good connection at ECM.
If OK, check and replace ECM.
4 Check for short in harness and ECM.
ON
Engine Coolant
Temp. Sensor
2
1
BE6653
P19554
NG
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
PREPARATION:
(a)
ECM
(b)
5 V
4 20
HINT:
THW
E6 E6
9 22
The engine coolant temp. sensor connector is disconnected.
E2
E6 E6
E1
(M/T) (A/T)
Before checking, do a visual and contact pressure check for the
E2
ECM connector (See page IN−26).
(c)
CHECK:
Read temp. value on the OBD II scan tool or TOYOTA
hand−held tester.
OK:
A00104
PREPARATION:
(a)
ECM
(b)
CHECK:
5 V
4 20
Read temp. value on the OBD II scan tool or TOYOTA
THW
E6 E6
hand−held tester.
9 22
E2
E6 E6
OK:
E1
(M/T) (A/T)
A00048
− ENGINE (5VZ−FE)
Remove the right cowl side trim (See page SF−61).
Connect between terminals THW and E2 of the ECM con-
nector.
Turn the ignition switch ON.
Temp. value: 140°C (284°F) or more
OK Open in harness between terminals E2 or THW,
repair or replace harness.
Disconnect the engine coolant temp. sensor connector.
Turn the ignition switch ON.
Temp. value: − 40°C (− 40°F)
OK Replace engine coolant temp. sensor.