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Toyota Corolla Repair Manual: Circuit description

The camshaft position sensor (g22+ signal) consists of a magnet, iron core and pickup coil.

The g22+ signal plate has 3 teeth on its outer circumference and is installed on the camshaft timing pulley.

When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil changes, causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.

The ne+ signal plate (crankshaft timing pulley) has 34 teeth and is installed to the crankshaft. The ne+ signal sensor generates 34 signals at every engine revolution. The ecm detects the crankshaft angle and the engine revolution based on the ne+ signals, and the cylinder and the angle of the vvt based on the combination of the g22+ and ne+ signals.

Reference: inspection using the oscilloscope.

Reference: inspection using the oscilloscope.

Hint

: the correct waveform is as shown on the left.

Monitor description

Monitor description

If there is no signal from the camshaft position sensor despite the engine revolving, or if the rotation of the camshaft and the crankshaft is not synchronized, the ecm interprets this as a malfunction of the sensor.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Wiring diagram

Wiring diagram

Refer to dtc p0335

Camshaft position sensor a circuit
Dtc p0340 camshaft position sensor a circuit (bank 1 or single sensor) Dtc p0341 camshaft position sensor a circuit range/performance (bank 1 or single sensor) ...

Inspection procedure
Hint: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is usefu ...

Other materials:

Vehicle lift and support locations
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Manual shifting test
1. Perform manual shifting test Hint: by this test, it can be determined whether the trouble is within the electrical circuit or is a mechanical problem in the transaxle. Disconnect the transmission wire connector.  inspect the manual driving operation. Check that the shift and g ...

Inspection procedure
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