Code No. P0341: Camshaft Position Sensor Range/Performance Problem


OPERATION



  • Refer to Code No. P0340: Camshaft Position Sensor System

FUNCTION



  • The camshaft position sensor detects the top dead centre on the compression stroke of the No. 1 cylinder and inputs a pulse signal to the engine-ECU.

TROUBLE JUDGMENT


Check Conditions
  • Battery positive voltage is 6 - 16 V.
  • Engine speed is 350 r/min or more.
Judgment Criterion
  • The number of output pulses from the camshaft position sensor every 2 engine rotations (from when one excessive tooth is detected to when another is detected) is not 5.

FAIL-SAFE AND BACKUP FUNCTION



  • The rail pressure is controlled in the range between 50 and 100 MPa.
  • The fuel injection amount is restricted (Output restriction).
  • The open angle of the accelerator pedal is restricted.
  • The DPF regeneration is prohibited.
  • The throttle valve is closed (Fixed opening degree).
  • The EGR control is stopped (fully closed).
  • The AS&G control is prohibited.

PROBABLE CAUSES



  • Failed camshaft position sensor
  • Harness damage in camshaft position sensor circuit or loose connector contact
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Installation check of camshaft position sensor

  • Check whether the camshaft position sensor is correctly installed.

Q. Is the check result normal?
Go to Step 2.
Repair or replace the camshaft position sensor.

STEP 2. Check harness between camshaft position sensor connector terminal and engine-ECU connector terminal SGCB.

  • Check power supply line for damage.

Q. Is the check result normal?
Go to Step 3.
Repair or replace the connector, or repair the damaged harness wire.

STEP 3. Check harness between camshaft position sensor connector terminal and engine-ECU connector terminal SGCG.

  • Check earthing line for damage.

Q. Is the check result normal?
Go to Step 4.
Repair or replace the connector, or repair the damaged harness wire.

STEP 4. Check harness between camshaft position sensor connector terminal and engine-ECU connector terminal SGC.

  • Check output line for damage.

Q. Is the check result normal?
Go to Step 5.
Repair or replace the connector, or repair the damaged harness wire.

STEP 5. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).