Toyota Camry Manual page 1381

DI–354
Check voltage between terminals IGT 1 ∼ 3 of ECM connector and body ground.
5
START
(+) (+) (+)
IGT3 IGT2 IGT1
IGT1 ∼ IGT3 and IGF Signal Waveform
VOLT
5
0
5
0
5
0
5
0
20 msec./Division (Idling)
OK
Disconnect igniter connector and check voltage between terminals IGT 1 ∼ 3 of
6
ECM connector and body ground.
START
(+) (+) (+)
IGT 3 IGT2 IGT1
OK
DIAGNOSTICS – ENGINE (1MZ–FE)
PREPARATION:
Remove the glove compartment (See page SF–73).
CHECK:
Measure voltage between terminals IGT 1 ∼ 3 of the ECM con-
nector and body ground when engine is cranked.
OK:
Voltage: More than 0.1 V and less than 4.5 V
A02034
Reference INSPECTION USING OSCILLOSCOPE
During idling, check waveform between terminals IGT 1 ∼ 3,
IGF and E1 of ECM.
IGT1
HINT:
The correct waveforms are as shown.
IGT2
IGT3
IGF
NG Check and replace ECM (See page IN–31).
P20870
PREPARATION:
(a) Disconnect the igniter connector.
(b) Remove the glove compartment (See page SF–73).
CHECK:
Measure voltage between terminals IGT 1 ∼ 3 of the ECM con-
nector and body ground when engine is cranked.
OK:
Voltage: More than 0.1 V and less than 4.5 V
A02034
NG Check and replace ECM (See page IN–31).
Author : Date :
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