DI--140
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DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
DTC P0340/12 Camshaft Position Sensor Circuit
Malfunction
CIRCUIT DESCRIPTION
Camshaft position sensor (G2+ signal) consist of a signal plate and pick up coil. The G2+ signal plate has
one tooth on its outer circumference and is mounted on the camshaft.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pick up coil change,
causing fluctuations in the magnetic field and generating an electromotive force in the pick up coil.
The NE signal plate has 34 teeth and is mounted on the crankshaft. The NE signal sensor generates 34
signals for every engine revolution. The engine ECU detects the standard crankshaft angle based on the
G2+ signals and the actual crankshaft angle and the engine speed by the NE signals.
DTC No.
DTC Detecting Condition
Trouble Area
P0340/12
No camshaft position sensor signal to engine ECU during
cranking
S
Open or short in camshaft position sensor circuit
S
Camshaft position sensor
P0340/12
p
S
Starter
/
O
i NE
i
it
S
Starter
Open in NE--
S
Engine ECU
Open in NE--
S
Engine ECU
WIRING DIAGRAM
DI1IL--01
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Pages From Supplement
3RZ-F,3RZ-FE