Troubleshooting
DTC P0341 CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR)CIRCUIT DESCRIPTION
DTC Detection Condition:
The camshaft position sensor (G2 signal) consists of a magnet, iron core and pickup coil.
The G2 signal plate has 1 tooth on its outer circumference and is installed on the camshaft timing pulley left hand.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil change, causing fluctuations in the magnetic field and generating voltage in the pickup coil.
The NE signal plate (crankshaft position sensor plate No. 1) has 34 teeth and is installed on the crankshaft. The NE signal sensor generates 34 signals at every engine revolution. Using the NE signal, the ECM detects both crankshaft angle and engine speed. In order to locate the top dead center position of the No. 1 cylinder, the ECM uses the G2 and NE signals.
HINT:
- DTC P0340 indicate a malfunction related to the camshaft position sensor (+) circuit. (Wire harness [ECM - camshaft position sensor] and camshaft position sensor.)
- DTC P0341 indicate a malfunction related to the camshaft position sensor (-) circuit (Wire harness [ECM - camshaft position sensor] and camshaft position sensor.)
Reference: Inspection using the oscilloscope.
a. During cranking or idling, check the waveform between the terminals of the E7 ECM connector.
MONITOR DESCRIPTION
Typical Enabling Conditions:
Typical Malfunction Thresholds:
Component Operating Range:
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.
Wiring Diagram:
Step 1 - 3:
Step 4:
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, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.