Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GYSU
Model Year Start: 2020 Model: Corolla Hatchback Prod Date Range: [01/2019 - 11/2022]
Title: K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P2767; Input / Turbine Speed Sensor "B" Circuit No Signal; 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]

DTC

P2767

Input / Turbine Speed Sensor "B" Circuit No Signal

DESCRIPTION

The ECM detects the input shaft speed based on the signal from the revolution sensor (transmission revolution sensor (NIN)) and performs gear ratio control.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2767

Input / Turbine Speed Sensor "B" Circuit No Signal

While the vehicle is driven with the shift lever in D and the SPD signal is 300 rpm or more, the speed indicated by the transmission revolution sensor (NIN) is less than 300 rpm for 2 seconds (1-trip detection logic).

  • Wire harness or connector
  • Transmission revolution sensor (NIN)
  • ECM

Comes on

DTC stored

MONITOR DESCRIPTION

The ECM receives a signal from the transmission revolution sensor (NIN) installed to the continuously variable transaxle assembly and determines the input shaft speed in order to control the gear ratio. If the ECM detects no signal from the transmission revolution sensor (NIN) even though the vehicle is moving, it will determine that the transmission revolution sensor (NIN) is malfunctioning, illuminate the MIL and store this DTC.

MONITOR STRATEGY

Related DTCs

P2767: Primary pulley speed sensor (NIN) / Verify pulse input

Required sensors/Components

Transmission revolution sensor (NIN)

Frequency of operation

Continuous

Duration

2 seconds

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present

None

Battery voltage

8 V or more

Time after battery voltage is 8 V or more

0.5 seconds or more

Write inhibit

Permit

Time after write status forbiddance to permit

0.5 seconds or more

Ignition switch

ON

Time after ignition switch OFF to ON

0.5 seconds or more

Starter

OFF

Time after starter ON to OFF

0.5 seconds or more

Output shaft revolution

300 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

Primary pulley speed sensor (output signal speed)

Less than 300 rpm

COMPONENT OPERATING RANGE

Primary pulley speed sensor (output signal speed)

300 rpm or more

CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

  • After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

    Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the Techstream on.
  6. Start the engine.
  7. Perform the D Position Shift Test inspection in Road Test. [*1]

    Click here 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: ROAD TEST 2020 - 2023 MY Corolla Corolla Hatchback [03/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: ROAD TEST

    HINT:

    [*1]: Normal judgment procedure.

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

  8. Stop the vehicle.
  9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  10. Input the DTC: P2767.
  11. 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

    N/A

    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

  • Strictly observe posted speed, limits, traffic laws and road conditions.
  • Do not drive the vehicle with the cable of the Techstream contacting the pedals, shift lever or steering wheel.
  • Driving the vehicle with the cable of the Techstream contacting these areas could impede vehicle control, resulting in a serious accident.
  • Do not operate the Techstream while driving the vehicle.
  • Operating the Techstream while driving the vehicle will prevent you from paying sufficient attention to vehicle surroundings, and could result in a serious accident.

NOTICE:

  • Perform the universal trip to clear permanent DTCs.

    Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

  • Perform initialization when parts related to the continuously variable transaxle system are replaced.

    Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

  • Check that no DTCs are stored after performing initialization.

    Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

PROCEDURE

1.

READ VALUE USING TECHSTREAM (SPD (NIN), ENGINE SPEED AND LOCK UP)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

(e) According to the display on the Techstream, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Engine Speed

Engine speed

Min.: 0 rpm

Max.: 16383 rpm

680 to 780 rpm: Engine idling

When the crankshaft position sensor is malfunctioning, "Engine Speed" is approximately 0 rpm or varies greatly from the actual engine speed.

SPD (NIN)

Primary pulley speed (NIN)

Min.: 0 rpm

Max.: 65535 rpm

  • 0 rpm: Vehicle stopped
  • Equal to engine speed (NE): Lock-up ON (After warming up engine)

Data is displayed in increments of 50 rpm.

Lock Up

Lock-up

OFF or ON

  • ON: Lock-up operating
  • OFF: Lock-up not operating

-

Powertrain > Engine and ECT > Data List

Tester Display

Engine Speed

SPD (NIN)

Lock Up

Result

Proceed to

Data List values are not normal

A

Data List values are normal

B

B

GO TO STEP 5

A

2.

INSPECT TRANSMISSION REVOLUTION SENSOR (NIN)

(a) Disconnect the C74 transmission revolution sensor (NIN) connector.

*a

Component without harness connected

(Transmission Revolution Sensor (NIN))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (NIN-) - 2 (NIN+)

20°C (68°F)

560 to 680 Ω

(c) Connect the C74 transmission revolution sensor (NIN) connector.

NG

REPLACE TRANSMISSION REVOLUTION SENSOR (NIN) 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; K313 (CVT): REVOLUTION SENSOR: COMPONENTS 2020 - 2023 MY Corolla Corolla Hatchback [03/2019 - 11/2022]; K313 (CVT): REVOLUTION SENSOR: COMPONENTS

OK

3.

CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NIN) - ECM)

(a) Disconnect the C77 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C77-123 (NIN+) - C77-124 (NIN-)

20°C (68°F)

560 to 680 Ω

C77-123 (NIN+) - Body ground and other terminals

Always

10 kΩ or higher

C77-124 (NIN-) - Body ground and other terminals

Always

10 kΩ or higher

(c) Connect the C77 ECM connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NIN) - ECM)

OK

4.

REPLACE ECM

(a) Replace the ECM.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: COMPONENTS

NEXT

PERFORM INITIALIZATION

5.

REPLACE ECM

(a) Replace the ECM.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: COMPONENTS

NEXT

PERFORM INITIALIZATION