Toyota Yaris: Sfi System / Crankshaft Position Sensor "A" Circuit Intermittent (P03351F,P03352A,P033531)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Crankshaft Position Sensor "A" Circuit Intermittent (P03351F,P03352A,P033531)

DESCRIPTION

Refer to DTC P033511.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P03351F

Crankshaft Position Sensor "A" Circuit Intermittent

Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or more (1 trip detection logic):

(a) Engine speed is 1000 rpm or higher.

(b) Starter signal is off.

(c) 3 seconds or more have elapsed since the starter signal switched from on to off.

*

  • Open or short in crankshaft position sensor circuit
  • Crankshaft position sensor
  • Crankshaft position sensor plate
  • ECM

-

SAE: P0339

P03352A

Crankshaft Position Sensor "A" Signal Stuck in Range

No crankshaft position sensor signal to the ECM while cranking (1 trip detection logic).

*

  • Open or short in crankshaft position sensor circuit
  • Crankshaft position sensor
  • Crankshaft position sensor plate
  • ECM

Comes on

SAE: P0335

P033531

Crankshaft Position Sensor "A" No Signal

The engine stalls and the engine speed signal value decreases rapidly (1 trip detection logic).

*

  • Open or short in crankshaft position sensor circuit
  • Crankshaft position sensor
  • Crankshaft position sensor plate
  • ECM

Comes on

SAE: P0335

*: When the engine is being stopped or started automatically by stop and start system control, the ECM does not monitor the crankshaft position sensor signal.

  • Reference: Inspection using an oscilloscope.

    Click here

MONITOR DESCRIPTION

A DTC will be stored if any of the following occurs:

  • The crankshaft position sensor signal (NE signal) is not received by the ECM when the engine is being cranked.
  • The crankshaft position sensor signal (NE signal) is not received by the ECM when the engine is running.
  • The engine stalls and the engine speed signal value decreases rapidly (under normal conditions the engine speed will decrease gradually).

MONITOR STRATEGY

Required Sensors/Components (Main)

Crankshaft position sensor

Required Sensors/Components (Related)

Camshaft position sensor

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Start the engine.
  7. Idle the engine for 20 seconds or more [A].
  8. Run the engine at an engine speed of 1000 rpm for 5 seconds or more [B].
  9. Turn the GTS on.
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  11. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  13. Input the DTC: P03351F, P03352A or P033531.
  14. Check the DTC judgment result.

    GTS Display

    Description

    NORMAL

    • DTC judgment completed
    • System normal

    ABNORMAL

    • DTC judgment completed
    • System abnormal

    INCOMPLETE

    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions

    HINT:

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • If the judgment result is INCOMPLETE, perform steps [A] through [C] again.

WIRING DIAGRAM

Refer to DTC P033511.

Click here

CAUTION / NOTICE / HINT

HINT:

  • If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
  • The engine speed can be checked by using the GTS. To perform the check, follow the procedures below:
    1. Connect the GTS to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the GTS on.
    4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.
    5. Start the engine.
    • The engine speed may be indicated as zero despite the engine running normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
  • Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.

READ VALUE USING GTS (ENGINE SPEED)

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Engine Speed

(b) Start the engine.

(c) Read the values displayed on the GTS while the engine is running.

Standard:

Correct values are displayed.

HINT:

  • To check the engine speed change, display the graph on the GTS.
  • If the engine does not start, check the engine speed while cranking.
  • If the engine speed indicated on the GTS remains at zero (0), there may be an open or short in the crankshaft position sensor circuit.
OK

CHECK FOR INTERMITTENT PROBLEMS

NG

2.

CHECK HARNESS AND CONNECTOR

HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

(a) Disconnect the crankshaft position sensor connector.

(b) Turn the ignition switch to ON.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

f1-3(VCNE) - Body ground

Ignition switch ON

4.5 to 5.5 V

f1-1(NE+) - Body ground

Ignition switch ON

3.0 to 5.0 V

*a

Front view of wire harness connector

(to Crankshaft Position Sensor)

(d) Turn the ignition switch off and wait for at least 30 seconds.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

f1-3(VCNE) - f1-1(NE+)

Ignition switch off

1.425 to 1.575 kΩ

f1-2(NE-) - Body ground

Always

Below 1 Ω

NG

GO TO STEP 5

OK

3.

CHECK SENSOR INSTALLATION AND CONDUCT VISUAL INSPECTION (CRANKSHAFT POSITION SENSOR)

*a

Clearance

(a) Visually check the crankshaft position sensor for damage.

(b) Check the crankshaft position sensor installation condition.

OK:

The crankshaft position sensor does not have any damage and is installed properly.

NG

SECURELY REINSTALL CRANKSHAFT POSITION SENSOR

OK

4.

INSPECT CRANKSHAFT POSITION SENSOR PLATE (TEETH OF CRANKSHAFT POSITION SENSOR PLATE)

(a) Inspect the teeth of the crankshaft position sensor plate.

OK:

Crankshaft position sensor plate does not have any cracks or deformation.

OK

REPLACE CRANKSHAFT POSITION SENSOR

NG

REPLACE CRANKSHAFT POSITION SENSOR PLATE

5.

CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)

(a) Disconnect the crankshaft position sensor connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

f1-3(VCNE) - D104-116(VCNE)

Always

Below 1 Ω

f1-1(NE+) - D104-92(NE+)

Always

Below 1 Ω

f1-2(NE-) - D104-115(NE-)

Always

Below 1 Ω

f1-3(VCNE) or D104-116(VCNE) - Body ground and other terminals

Always

10 kΩ or higher

f1-1(NE+) or D104-92(NE+) - Body ground and other terminals

Always

10 kΩ or higher

f1-2(NE-) - D104-115(NE-) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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