Toyota T100 1996 Service Manual page 309

WIRING DIAGRAM
From 9
IG Switch
EA1
2 2
3
1
2
5
2
2
2 2 1
From Battery
To Body Ground
INSPECTION PROCEDURE
1 Connect OBD II scan tool or TOYOTA hand−held tester and read value for volt-
age output of heated oxygen sensor (Bank 1 sensor 1).
PREPARATION:
(a) Connect the OBD II scan tool or TOYOTA hand−held tester to the DLC3.
(b) Warm up the engine to normal operating temp.
CHECK:
Read voltage output of heated oxygen sensor (bank 1 sensor 1) when engine is suddenly raced.
HINT:
Perform quick racing to 4,000 rpm 3 times using the accelerator pedal.
OK:
Heated oxygen sensor (bank 1 sensor 1) output a RICH signal (0.45 V or more) at least once
NG
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
9
W−R W−R W−R
IE1
R/B No.2
2 3
Heated
Oxygen
Sensor
(Bank 1
1 4
Sensor 2)
− ENGINE (3RZ−FE)
B
Heated
2 3
Oxygen
Sensor
(Bank 1
Sensor 1)
1 4
P−G
W
BR
R−G
EB
OK Check and replace ECM (See page IN−26).
ECM
6 5
OX1
E6 E6
E1
3
2
HT1
E7 E7
13
5
OX2
E6
E6
E1
14 24
E1
E7 E7
15 16
HT2
E7 E7
(M/T)(A/T)
DI−45
E03
E03
P19611