BE6653
A01848
A02268
START
IGT1
IGT2
(+)
(--)
P19902
A00297
IGT1/IGF signal waveform
2V/Division
10m sec./Division (Idling)
IGT1
IGF
BE6653
A01848
A02268
START
IGT1
IGT2
(+)
(--)
DI--154
--
DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
5 Check voltage between terminals IGT1 and IGT2 of engine ECU connector and
body ground.
PREPARATION:
Remove the grove compartment.
CHECK:
Measure voltage between terminals IGT1 and IGT2 of engine
ECU connector and body ground when engine is cranked.
OK:
Voltage: More than 0.1 V and less than 4.5 V
Reference: INSPECTION USING OSCILLOSCOPE
During idling, check waveform between terminals IGT1 and E1
of engine ECU.
HINT:
The correct waveform are as shown.
IGT2 signal waveform is same as the IGT1 signal waveform.
NG
Check and replace engine ECU
OK
6 Disconnect ignition coil (w/ igniter) connector and check voltage between termi-
nals IGT1 and IGT2 of engine ECU connector and body ground.
PREPARATION:
(a)
Disconnect the ignition coil (w/ igniter) connector.
(b)
Remove the glove compartment.
CHECK:
Measure voltage between terminals IGT1 and IGT2 of engine
ECU connector and body ground when engine is cranked.
OK:
Voltage: More than 0.1 V and less than 4.5 V
NG
Check and replace engine ECU
OK
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Pages From Supplement
3RZ-F,3RZ-FE