P0348

DTC P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)
DTC P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor)
DTC P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor)
DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
DTC P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2)
DTC P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2)

DESCRIPTION

DTC Detection Condition:

The VVT sensor (G signal) consists of a magnet and MRE element.

The exhaust camshaft has 3 teeth on its inner circumference. When the camshaft gear rotates, the air gap changes between the protrusion on the gear and the pickup coil. The change affects the magnetic field, resulting in a change in the resistance of the MRE element. The crankshaft angle sensor plate has 34 teeth and outputs 34 signals every engine revolution. The ECM detects the standard crankshaft angle based on the G signal, actual crankshaft angle and engine speed by an NE signal. Reference: Inspection using an oscilloscope







Reference: Inspection using an oscilloscope

HINT:
- The correct waveform is shown in the illustration.
- VV1+ and VV2+ stand for the VVT sensor signal, and NE+ stands for the CKP sensor signal.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds (Part 1):

Typical Malfunction Thresholds (Part 2):

Component Operating Range:

If no signal is transmitted by the VVT sensor despite the engine revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

Wiring Diagram:

Step 1:

Step 2-3:

Step 4-5:

INSPECTION PROCEDURE

HINT: Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.