Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GYSW
Model Year Start: 2020 Model: Corolla Hatchback Prod Date Range: [01/2019 - 11/2022]
Title: K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P2820; Pressure Control Solenoid "J" Performance or Stuck Off; 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]

DTC

P2820

Pressure Control Solenoid "J" Performance or Stuck Off

DESCRIPTION

According to current from the ECM, the shift solenoid valve SLP controls primary pulley pressure in accordance with the requested gear ratio to perform gear ratio changes.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2820

Pressure Control Solenoid "J" Performance or Stuck Off

Any of the following conditions are met (1-trip detection logic):

  • When the oil pressure sensor output value is 0.4 MPa (4.1 kgf/cm2, 58 psi) or more and the target gear ratio is less than 1.0, the actual gear ratio is 2.0 or more for 2 seconds or more.
  • When the oil pressure sensor output value is 0.4 MPa (4.1 kgf/cm2, 58 psi) or more and the target gear ratio is 2.0 or more, the actual gear ratio is less than 0.5 for 1.5 seconds or more.

Continuously variable transaxle assembly (Shift solenoid valve SLP)

Comes on

DTC stored

DTC Detection Condition Patterns:

 

Vehicle Condition

Pattern 1

Pattern 2

Diagnostic Condition

The oil pressure sensor output value is 0.4 MPa (4.1 kgf/cm2, 58 psi) or more and the target gear ratio is less than 1.0.

-

The oil pressure sensor output value is 0.4 MPa (4.1 kgf/cm2, 58 psi) or more and the target gear ratio is 2.0 or more.

-

Malfunction Condition

The actual gear ratio is 2.0 or more.

-

The actual gear ratio is less than 0.5.

-

Duration

2 seconds or more

1.5 seconds or more

Detection Logic

1-trip detection logic

1-trip detection logic

HINT:

This DTC is stored when either of the above detection patterns is met.

MONITOR DESCRIPTION

The ECM compares the actual gear ratio with the target gear ratio. When the actual gear ratio and target gear ratio are different, the ECM detects the malfunction, illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs

P2820: Pressure control solenoid (Shift solenoid valve SLP)/ Functional check

Required sensors/Components

Continuously variable transaxle assembly

(Shift solenoid valve SLP)

Frequency of operation

Continuous

Duration

OFF malfunction: 1.5 seconds

ON malfunction: 2 seconds

MIL operation

1 driving cycle

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

Electric throttle control system (ETCS)

Not system down

(MIL illuminated by following codes: P0121, P0122, P0123, P0222, P0223, P0604, P0606, P0607, P060D, P060E, P0657, P0658, P1607, P16B0, P2102, P2103, P2111, P2112, P2119, P2135)

Knock sensor circuit

Not circuit malfunction

(MIL illuminated by following codes: P0327, P0328)

Engine coolant temperature (ECT) sensor circuit

Not circuit malfunction

(MIL illuminated by following codes: P0117, P0118)

Intake air temperature (IAT) sensor circuit

Not circuit malfunction

(MIL illuminated by following codes: P0112, P0113)

Shift solenoid "G" circuit

(Shift solenoid valve SC)

Not circuit malfunction

(MIL illuminated by following codes: P099B, P099C)

Torque converter clutch solenoid circuit

(Shift solenoid valve SL circuit)

Not circuit malfunction

(MIL illuminated by following codes: P2769, P2770)

Pressure control solenoid "K" circuit

(Shift solenoid valve SLS circuit)

Not circuit malfunction

(MIL illuminated by following codes: P282F, P2830)

Pressure control solenoid "J" circuit

(Shift solenoid valve SLP circuit)

Not circuit malfunction

(MIL illuminated by following codes: P2826, P2827)

Transmission fluid temperature sensor "A" circuit

(CVT fluid temperature sensor circuit)

Not circuit malfunction

(MIL illuminated by following codes: P0712, P0713)

Turbine speed sensor "A" circuit

Not circuit malfunction

(MIL illuminated by following codes: P0717, P07BF, P07C0)

Input speed sensor "B" circuit

Not circuit malfunction

(MIL illuminated by following codes: P2767)

Output speed sensor circuit

Not circuit malfunction

(MIL illuminated by following codes: P0722, P077C, P077D)

Transmission fluid pressure sensor "A" circuit

Not circuit malfunction

(MIL illuminated by following codes: P0842, P0843)

Shift position

("D" or "R" or "B")

Tire

Not slipping

Turbine speed - Input speed

Less than 50 rpm

ECT (Engine coolant temperature)

60°C (140°F) or more

Spark advance from MAX. retard timing by KCS control

0 °CA or more

Ignition switch

ON

Engine speed

500 rpm or more

Input speed

100 rpm or more

Output speed

150 rpm or more

Transmission fluid temperature

-10°C (14°F) or more and less than 140°C (284°F)

Duration time after shifting from ("N" or "P") to ("D" or "R" or "B")

4 seconds or more

Time after all of the following conditions are met: (a) and (b)

4.032 seconds or more

(a) ECM does NOT command

SC "ON"

(b) ECM does NOT command

SL "OFF"

Shift solenoid valve SLP

Operating shift control by ECM command

Low voltage flag

OFF

OFF malfunction:

Actual clamping pressure

0.4 MPa (4.1 kgf/cm2, 58 psi) or more

Time after some of the following conditions are met: (a) or (b)

0.5 seconds or more

(a) ECM commands

SC "OFF" and SL "ON"

(b) ECM commands

SC "ON" and SL "ON"

ON malfunction 1st judgment:

Time after any of the following conditions are met: (a), (b) or (c)

0.5 seconds or more

(a) ECM commands

SC "OFF" and SL "OFF"

(b) ECM commands

SC "OFF" and SL "ON"

(c) ECM commands

SC "ON" and SL "ON"

ON malfunction 2nd judgment:

Actual clamping pressure

0.4 MPa (4.1 kgf/cm2, 58 psi) or more

Time after any of the following conditions are met: (a) or (b)

0.5 seconds or more

(a) ECM commands

SC "OFF" and SL "ON"

(b) ECM commands

SC "ON" and SL "ON"

Following condition met once after 1st judgment

-

- Vehicle speed

Less than 10 km/h (6.2 mph)

TYPICAL MALFUNCTION THRESHOLDS

OFF malfunction:

Target gear ratio

2 or more

Actual gear ratio

Less than 0.5

ON malfunction*:

Target gear ratio

Less than 1

Actual gear ratio

2 or more

HINT:

*: It is necessary 2 judgments / drive cycle

2nd judgment: pending fault code ON

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: P2820.
  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.

CAUTION / NOTICE / HINT

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.

CHECK DTC OUTPUT (IN ADDITION TO DTC P2820)

(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 / Trouble Codes.

Powertrain > Engine and ECT > Trouble Codes

(e) Read the DTCs using the Techstream.

HINT:

If any DTCs other than P2820 are output, perform troubleshooting for those DTCs first.

Result

Proceed to

Only DTC P2820 is output

A

DTC P2820 and other DTCs are output

B

B

GO TO DTC CHART 2020 MY Corolla Corolla Hatchback [01/2019 - 03/2019]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2020 - 2023 MY Corolla Corolla Hatchback [03/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

2.

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

(a) Replace the continuously variable transaxle assembly.

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

NEXT

PERFORM INITIALIZATION