A02446
START
IGT
(+)
(--)
FI6680
IGT
IGF
0V
0V
2V/
Division
IGT, IGF signal waveforms
10 m sec./Division (Idling)
DI--26
--
DIAGNOSTICS
ENGINE (1RZ--E)
4 Check for open and short in harness and connector in IGT signal circuit between
engine ECU and IIA
NG
Repair or replace harness or connector.
OK
5 Check voltage between terminals IGT of engine ECU connector and body
ground.
PREPARATION:
Re mo ve the g lo ve co mpatment.
CHECK:
Measure voltage between terminal IGT of 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 IGT and E1
of ECU.
HINT:
The correct waveform are as shown.
NG
Check and replace engine ECU
OK
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Pages From Supplement
3RZ-F,3RZ-FE