Toyota Yaris: Sfi System / Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground (P034011,P034015)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground (P034011,P034015)

DESCRIPTION

The camshaft position sensor (for intake camshaft) (VV1 signal) consists of a magnet and MRE (Magneto-Resistive Element).

The intake camshaft has a timing rotor for the camshaft position sensor. When the intake camshaft rotates, changes occur in the air gaps between the timing rotor and MRE, which affects the magnetic field. As a result, the resistance of the MRE material fluctuates. The camshaft position sensor converts the camshaft rotation data to pulse signals, uses the pulse signals. The ECM uses the pulse signals to determine the camshaft angle. Then the ECM uses this data to control fuel injection duration and injection timing.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P034011

Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground

The camshaft position sensor (for intake camshaft) output voltage is less than 0.3 V for 4 seconds or more (1 trip detection logic).

  • Open or short in camshaft position sensor (for intake camshaft) circuit
  • Camshaft position sensor (for intake camshaft)
  • ECM

Comes on

SAE: P0342

P034015

Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Battery or Open

The camshaft position sensor (for intake camshaft) output voltage is higher than 4.7 V for 4 seconds or more (1 trip detection logic).

  • Open or short in camshaft position sensor (for intake camshaft) circuit
  • Camshaft position sensor (for intake camshaft)
  • ECM

Comes on

SAE: P0343

  • Reference: Inspection using an oscilloscope.

    HINT:

    • The correct waveform is as shown.
    • VV1 stands for the camshaft position sensor signal (for intake camshaft), and EV1 stands for the camshaft position sensor signal (for exhaust camshaft).

    ECM Terminal Name

    CH1: Between VV1+ and VV1-

    CH2: Between EV1+ and EV1-

    Tester Range

    5 V/DIV., 20 ms./DIV.

    Condition

    Idling with warm engine

MONITOR DESCRIPTION

If the output voltage transmitted by the camshaft position sensor (for intake camshaft) remains low or high, the ECM interprets this as a malfunction in the sensor circuit, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Required Sensors/Components (Main)

Camshaft position sensor (for intake camshaft)

Required Sensors/Components (Related)

Crankshaft 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. Turn the ignition switch to ON.
  7. Turn the GTS on.
  8. Start the engine.
  9. Idle the engine for 10 seconds or more.
  10. Enter the following menus: Powertrain / Engine / Trouble Codes.
  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: P034011 or P034015
  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 is malfunctioning.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

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.

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 camshaft position sensor (for intake camshaft) 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

D90-3(VC) - Body ground

Ignition switch ON

4.5 to 5.5 V

D90-1(VVI+) - Body ground

Ignition switch ON

3.0 to 5.5 V

*a

Front view of wire harness connector

(to Camshaft Position Sensor (for Intake Camshaft))

(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

D90-3(VC) - D90-1(VVI+)

Ignition switch off

1.425 to 1.575 kΩ

D90-2(VVI-) - Body ground

Always

Below 1 Ω

OK

REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

NG

2.

CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM)

(a) Disconnect the camshaft position sensor (for intake camshaft) 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

D90-1(VVI+) - D104-90(VV1+)

Always

Below 1 Ω

D90-2(VVI-) - D104-89(VV1-)

Always

Below 1 Ω

D90-3(VC) - D104-88(VCV1)

Always

Below 1 Ω

D90-1(VVI+) or D104-90(VV1+) - Body ground and other terminals

Always

10 kΩ or higher

D90-2(VVI-) or D104-89(VV1-) - Body ground and other terminals

Always

10 kΩ or higher

D90-3(VC) or D104-88(VCV1) - Body ground and other terminals

Always

10 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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