Code No. P0335: Crank Angle Sensor System










OPERATION



  • Power is supplied to the crank angle sensor (terminal No. 3) from the engine control relay (terminal No. 1) and is earthed to the engine-A/T-ECU (terminal No. 88) from the crank angle sensor (terminal No. 1).
  • A power voltage of 5 V is applied to the crank angle sensor output terminal (terminal No. 2) from the engine-A/T-ECU (terminal No. 70).

FUNCTION



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

TROUBLE JUDGMENT


Check Condition
  • While engine is being cranked.
Judgment Criterion
  • The crank angle sensor output voltage does not vary (no pulse signal input) for 2 seconds.

PROBABLE CAUSES



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

DIAGNOSIS PROCEDURE

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

  • Refer to Data List Reference Table .

  1. Item 02: 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-24 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-24 crank angle sensor connector.

  • Disconnect connector, and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal No. 2 and earth.
OK: 4.9 - 5.1 V

Q. Is the check result normal?

Go to Step 9 .
Go to Step 4 .

STEP 4. Perform voltage measurement at D-216 engine-A/T-ECU connector.

  • Measure engine-A/T-ECU terminal voltage.
  • Disconnect B-24 crank angle sensor connector.
  • Ignition switch: ON
  • Voltage between terminal No. 70 and earth.
OK: 4.9 - 5.1 V

Q. Is the check result normal?

Go to Step 5 .
Go to Step 6 .

STEP 5. Connector check: D-216 engine-A/T-ECU connector

Q. Is the check result normal?


    Check and repair harness between B-24 (terminal No. 2) crank angle sensor connector and D-216 (terminal No. 70) engine-A/T-ECU connector.

    • Check output line for open circuit.
Repair or replace the connector.

STEP 6. Connector check: D-216 engine-A/T-ECU connector

Q. Is the check result normal?

Go to Step 7 .
Repair or replace the connector.

STEP 7. Check harness between B-24 (terminal No. 2) crank angle sensor connector and D-216 (terminal No. 70) engine-A/T-ECU connector.

  • Check output line for short circuit.

Q. Is the check result normal?

Go to Step 8 .
Repair the damaged harness wire.

STEP 8. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 02: 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-A/T-ECU.

STEP 9. Perform voltage measurement at B-24 crank angle sensor connector.

  • Disconnect connector, and measure at harness side.
  • Ignition switch: ON
  • Voltage between terminal No. 3 and earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 11 .
Go to Step 10 .

STEP 10. Connector check: B-15X engine control relay connector

Q. Is the check result normal?


    Check and repair harness between B-24 (terminal No. 3) crank angle sensor connector and B-15X (terminal No. 1) engine control relay connector.

    • Check power supply line for open/short circuit.
Repair or replace the connector.

STEP 11. Perform resistance measurement at B-24 crank angle sensor connector.

  • Disconnect connector, and measure at harness side.
  • Resistance between terminal No. 1 and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?

Go to Step 14 .
Go to Step 12 .

STEP 12. Connector check: D-216 engine-A/T-ECU connector

Q. Is the check result normal?

Go to Step 13 .
Repair or replace the connector.

STEP 13. Check harness between B-24 (terminal No. 1) crank angle sensor connector and D-216 (terminal No. 88) engine-A/T-ECU connector.
note Before checking harness, check intermediate connector D-111, and repair if necessary.

  • Check earthing line for open circuit and damage.

Q. Is the check result normal?

Go to Step 8 .
Repair the damaged harness wire.

STEP 14. Perform output wave pattern measurement at B-24 crank angle sensor connector (Using an oscilloscope).

  • Use special tool test harness (MD998478) to connect connector, and measure at pick-up harness.
  • Engine: Idling
  • Transmission: P range
  • Voltage between terminal No. 2 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 with no noise in waveform.

Q. Is the check result normal?

Go to Step 8 .
Go to Step 15 .

STEP 15. Connector check: B-15X engine control relay connector

Q. Is the check result normal?

Go to Step 16 .
Repair or replace the connector.

STEP 16. Check harness between B-24 (terminal No. 3) crank angle sensor connector and B-15X (terminal No. 1) engine control relay connector.

  • Check power supply line for damage.

Q. Is the check result normal?

Go to Step 17 .
Repair the damaged harness wire.

STEP 17. Connector check: D-216 engine-A/T-ECU connector

Q. Is the check result normal?

Go to Step 18 .
Repair or replace the connector.

STEP 18. Check harness between B-24 (terminal No. 2) crank angle sensor connector and D-216 (terminal No. 70) engine-A/T-ECU connector.

  • Check output line for damage.

Q. Is the check result normal?

Go to Step 19 .
Repair the damaged harness wire.

STEP 19. Check harness between B-24 (terminal No. 1) crank angle sensor connector and D-216 (terminal No. 88) engine-A/T-ECU connector.
note Before checking harness, check intermediate connector D-111, and repair if necessary.

  • Check earthing line for damage.

Q. Is the check result normal?

Go to Step 20 .
Repair the damaged harness wire.

STEP 20. Check the crankshaft sensing blade.

Q. Is the check result normal?

Go to Step 21 .
Replace the crankshaft sensing blade.

STEP 21. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 02: 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 crank angle sensor.