Code No. P0335: Crank Angle Sensor System








OPERATION



  • Power is supplied to the crank angle sensor (terminal No. 1) from the engine-ECU (terminal No. 9) and is earthed to the engine-ECU (terminal No. 24) from the crank angle sensor (terminal No. 2).
  • A power voltage of 5 V is applied to the crank angle sensor (terminal No. 3) from the engine-ECU (terminal No. 8).

FUNCTION



  • The crank angle sensor detects the crank angle (position) and inputs a pulse signal to the engine-ECU.
  • In response to the signal, the engine-ECU controls the injector, etc.

TROUBLE JUDGMENT


Check Condition, Judgement Criterion
  • Normal signal pattern has not been input for cylinder identification from the crank angle sensor signal and intake camshaft position sensor signal for 2 seconds.
Check Condition
  • Engine is being cranked.
Judgement Criterion
  • Crank angle sensor output voltage has not changed (no pulse signal is input) for 2 seconds.

PROBABLE CAUSES



  • Failed crank angle sensor
  • Open/short circuit or harness damage in crank angle sensor circuit or loose connector contact
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 2: Crank angle sensor

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2 .

STEP 2. Connector check: B-22 crank angle sensor connector

Q. Is the check result normal?
Go to Step 3 .
Repair or replace the connector.

STEP 3. Perform voltage measurement at B-22 crank angle sensor connector.

  • Disconnect connector and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal No. 3 and earth.
OK: 4.9 - 5.1 V

Q. Is the check result normal?
Go to Step 7 .
Go to Step 4 .

STEP 4. Connector check: B-29 engine-ECU connector

Q. Is the check result normal?
Go to Step 5 .
Repair or replace the connector.

STEP 5. Check harness between B-22 (terminal No. 3) crank angle sensor connector and B-29 (terminal No. 8) engine-ECU connector.

  • Check output line for open/short circuit.

Q. Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire.

STEP 6. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 2: Crank angle sensor

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

STEP 7. Perform voltage measurement at B-22 crank angle sensor connector.

  • Disconnect connector and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal No. 1 and earth.
OK: 4.9 - 5.1 V

Q. Is the check result normal?
Go to Step 10 .
Go to Step 8 .

STEP 8. Connector check: B-29 engine-ECU connector

Q. Is the check result normal?
Go to Step 9 .
Repair or replace the connector.

STEP 9. Check harness between B-22 (terminal No. 1) crank angle sensor connector and B-29 (terminal No. 9) engine-ECU connector.

  • Check power supply line for open/short circuit.

Q. Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire.

STEP 10. Perform resistance measurement at B-22 crank angle sensor connector.

  • Disconnect connector and measure at harness side.
  • Resistance between terminal No. 2 and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?
Go to Step 13 .
Go to Step 11 .

STEP 11. Connector check: B-29 engine-ECU connector

Q. Is the check result normal?
Go to Step 12 .
Repair or replace the connector.

STEP 12. Check harness between B-22 (terminal No. 2) crank angle sensor connector and B-29 (terminal No. 24) engine-ECU connector.

  • Check earthing line for open circuit and damage.

Q. Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire.

STEP 13. Perform output wave pattern measurement at B-22 crank angle sensor connector (Using an oscilloscope).

  • Use special tool test harness (MB991709) to connect connector, and measure at pick-up harness.
  • Engine: Idling
  • Transmission: Neutral <M/T> or P range <CVT>
  • Voltage between terminal No. 3 and earth.
OK: Waveforms should be displayed on inspection procedure using an oscilloscope (Refer to ), its maximum value should be 4.8 V or more, and its minimum value should be 0.6 V or less. There must be no noise in the output wave pattern.

Q. Is the check result normal?
Go to Step 6 .
Go to Step 14 .

STEP 14. Connector check: B-29 engine-ECU connector

Q. Is the check result normal?
Go to Step 15 .
Repair or replace the connector.

STEP 15. Check harness between B-22 (terminal No. 1) crank angle sensor connector and B-29 (terminal No. 9) engine-ECU connector.

  • Check power supply line for damage.

Q. Is the check result normal?
Go to Step 16 .
Repair the damaged harness wire.

STEP 16. Check harness between B-22 (terminal No. 3) crank angle sensor connector and B-29 (terminal No. 8) engine-ECU connector.

  • Check output line for damage.

Q. Is the check result normal?
Replace the crank angle sensor. Then go to Step 17 .
Repair the damaged harness wire.

STEP 17. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is the check result normal?
Replace the crank angle sensor sensing ring.
Check end.