Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001BGX2
Model Year Start: 2019 Model: Corolla Hatchback Prod Date Range: [06/2018 - 03/2019]
Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P034031; Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal; 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]

DTC

P034031

Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal

DESCRIPTION

Refer to DTC P034011.

Click here 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P034011; Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P034031

Camshaft Position Sensor "A" Bank 1 or Single Sensor No Signal

Diagnosis condition:

  • The engine is running (600 rpm or more)

Abnormal condition:

  • No camshaft position sensor (for intake camshaft) signal.

Malfunction time:

  • 5 seconds or more

Trip logic:

  • 1 trip detection logic

Detection conditions:

  • Continuous

Sensors/components used for detection (Main):

  • Camshaft position sensor (for intake camshaft)

Sensors/components used for detection (Related):

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

Comes on

DTC stored

SAE Code: P0340

Reference: Inspection using an oscilloscope.

Click here 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P034011; Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground+

MONITOR DESCRIPTION

When the engine is running and no camshaft position sensor (for intake camshaft) signal is received for 5 seconds or more, the ECM determines that the camshaft position sensor (for intake camshaft) circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0340: Camshaft position sensor verify pulse input

Required Sensors/Components (Main)

Camshaft position sensor (for intake camshaft)

Required Sensors/Components (Related)

Crankshaft position sensor

Frequency of Operation

Continuous

Duration

5 seconds

MIL Operation

Immediate

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

All of the following conditions are met

-

Battery voltage

8 V or higher

Engine switch

on (IG)

Camshaft position sensor voltage

0.3 to 4.7 V

Engine speed

600 rpm or higher

Camshaft position sensor range check fail (P0342, P0343)

Not detected

TYPICAL MALFUNCTION THRESHOLDS

Camshaft position sensor signal

No signal

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2019 - 2022 MY Corolla Corolla Hatchback [06/2018 - 09/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG).
  3. Turn the Techstream on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the engine switch off and wait for at least 30 seconds.
  6. Start the engine [A].
  7. Idle the engine for 10 seconds or more [B].
  8. Turn the Techstream on.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  10. 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.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Proceed to the next screen and enter the DTC to be checked.
  13. Check the DTC judgment result.

    Techstream 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.
    • If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
    • [A] to [C]: Normal judgment procedure.

      The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

    • When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P034011.

Click here 2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P034011; Camshaft Position Sensor "A" Bank 1 or Single Sensor Circuit Short to Ground+

CAUTION / NOTICE / HINT

HINT:

  • If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
  • Read Freeze Frame Data using the Techstream. 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 DTC OUTPUT (DTC P034031 AND P034011 OR P034015)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTC P034031 is output

A

DTC P034031 and P034011 or P034015 are output

B

HINT:

If DTC P034011 or P034015 is output, perform troubleshooting for it first.

B

GO TO DTC CHART 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

2.

CHECK TERMINAL VOLTAGE AND INTERNAL RESISTANCE (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) AND ECM)

*a

Front view of wire harness connector

(to Camshaft Position Sensor (for Intake Camshaft))

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 engine switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C9-3 (VC) - Body ground

Engine switch on (IG)

4.5 to 5.5 V

C9-1 (VVI+) - Body ground

Engine switch on (IG)

3.0 to 5.0 V

(d) Turn the engine switch off.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C9-2 (VVI-) - Body ground

Engine switch off

Below 1 Ω
NG

GO TO STEP 5

OK

3.

INSPECT CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

(a) Remove the camshaft position sensor (for intake camshaft).

Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (ENGINE CONTROL): CAMSHAFT POSITION SENSOR: REMOVAL

(b) Confirm that there is no oil on the connecting parts of the camshaft position sensor (for intake camshaft) connector.

OK:

There is no oil on the connecting parts of the camshaft position sensor (for intake camshaft) connector.

NG

REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

OK

4.

INSPECT CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

*a

Component without harness connected

(Camshaft Position Sensor (for Intake Camshaft))

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (VC) - 1 (VVI+)

Always

10 kΩ or higher

3 (VC) - 2 (VVI-)

Always

10 kΩ or higher

1 (VVI+) - 2 (VVI-)

Always

10 kΩ or higher
OK

REPLACE ECM 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

NG

REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)

5.

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

C9-3 (VC) - C76-88 (VCV1)

Always

Below 1 Ω

C9-1 (VVI+) - C76-90 (VV1+)

Always

Below 1 Ω

C9-2 (VVI-) - C76-89 (VV1-)

Always

Below 1 Ω

C9-3 (VC) or C76-88 (VCV1) - Body ground and other terminals

Always

10 kΩ or higher

C9-1 (VVI+) or C76-90 (VV1+) - Body ground and other terminals

Always

10 kΩ or higher

C9-2 (VVI-) or C76-89 (VV1-) - Body ground and other terminals

Always

10 kΩ or higher
OK

REPLACE ECM 2019 MY Corolla Corolla Hatchback [06/2018 - 01/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR