A01991
A01992
A02359
G2+, NE signal waveforms
5V/
Division
5V/
Division
G2+
NE
G2+
NE
20 m sec./Division (Idling)
10 m sec./Division (Idling)
--
DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
DI--141
INSPECTION PROCEDURE
HINT:
Read freed frame data using hand--held tester. Because freeze frame records the engine conditions when
the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was run-
ning or stopped, the engine warmed up or not, the air--fuel ratio lean or rich, etc. at the time of the malfunction.
1 Check resistance of camshaft position sensor (Signal generator)
Reference: INSPECTION USING OSCILLOSCOPE
During cranking or idling, check between terminals G2+ and
NE--, NE+ and NE-- of engine ECU
HINT:
The correct waveform are as shown.
NG
Replace camshaft position sensor.
OK
2 Check for open and short in harness and connector between engine ECU and
camshaft position sensor
NG
Repair or replace harness or connector.
OK
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3RZ-F,3RZ-FE