P0340

DESCRIPTION
The camshaft position sensor (PHASE) is located on the engine front cover facing the camshaft sprocket. It detects the cylinder No. signal.
The sensor consists of a permanent magnet, core and coil.
When engine is running, the gap between the sensor and the camshaft sprocket will periodically change. Permeability near the sensor also changes.
Due to the permeability change, the magnetic flux near the core is changed. Therefore, the voltage signal generated in the coil is changed.
The ECM receives the voltage signal and detects the cylinder No. signal.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

Note: If both DTC PO34O and P1335, P0335 or P1336 are displayed, perform TROUBLE DIAGNOSIS FOR DTC P1335, P0335 or P1336 first.

Before performing the following procedure, confirm that battery voltage is more than 1O.5V.

With Consult
1) Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT.
2) Crank engine for at least 2 seconds.

OR

With GST
1) Crank engine for at least 2 seconds.
2) Select "MODE 3" with GST.

OR

Without Scan Tools
1) Crank engine for at least 2 seconds.
2) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3) Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.




WIRING DIAGRAM




DIAGNOSTIC PROCEDURE

COMPONENT INSPECTION
1. Disconnect camshaft position sensor (PHASE) harness connector.
2. Loosen the fixing bolt of the sensor.
3. Remove the sensor.




4. Visually check the sensor for chipping.




5. Check resistance as shown in the figure.

Resistance:
Approximately 1,440 - 1,760 Ohms at 20°C (68°F)
(HITACHI make)
Approximately 2,090 - 2,550 Ohms at 20°C (68°F)
(MITSUBISHI make)