Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Pressure Control Solenoid "J" Performance/Stuck Off (2 Trip Detected) (P281F00,P281F71)

Toyota Corolla Cross (2022-2024) Service Manual / Drivetrain / K120 (cvt) / Continuously Variable Transaxle System / Pressure Control Solenoid "J" Performance/Stuck Off (2 Trip Detected) (P281F00,P281F71)

DESCRIPTION

Using the current from the TCM, the shift solenoid valve SLP controls the 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

Note

P281F00

Pressure Control Solenoid "J" Performance/Stuck Off (2 Trip Detected)

Any of the following conditions are met (2-trip detection logic):

  • When the TCM commands lock-up ON, the difference between the engine speed (NE) and transmission revolution sensor (NT) signal is 250 rpm or more for 1 second or more.
  • When the TCM commands the C1 clutch to be engaged, the difference between the signals from the transmission revolution sensor (NT) and (NC1) is more than 200 rpm for 1 second or more.

Continuously variable transaxle assembly (Shift solenoid valve SLP)

Comes on

DTC stored

SAE Code:

P2820

P281F71

Pressure Control Solenoid "J" Performance/Stuck Off Actuator Stuck

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 2.0 or more, the actual gear ratio is less than 0.55 for 1.5 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 less than 1.1, the actual gear ratio is 1.8 or more for 2 seconds or more.

Continuously variable transaxle assembly (Shift solenoid valve SLP)

Comes on

DTC stored

SAE Code:

P2820

MONITOR DESCRIPTION

P281F00 (Shift solenoid valve SLP OFF stuck): Detection condition from lock-up clutch operation:
  • Under normal conditions, if the TCM commands lock-up ON, line pressure is applied to the lock up control valve from the shift solenoid valve SLU. The lock up control valve then opens to the lock-up ON side of the lock-up clutch and the lock-up clutch engages.

    When the shift solenoid valve SLP is stuck OFF, if the TCM commands lock-up ON, line pressure is applied to the sequence valve from the shift solenoid valve SLP and in turn line pressure from the shift solenoid valve SLG is applied to the lock up control valve.

    As a result, the lock up control valve blocks the line pressure from being applied to the lock-up ON side of the lock-up clutch and the lock-up clutch cannot be engaged.

    In this case, when the TCM commands lock-up ON, it detects that lock-up is not operating (the difference between the engine speed (NE) signal and transmission revolution sensor (NT) signal exceeds the threshold) and determines that the shift solenoid valve SLP is stuck OFF, illuminates the MIL and stores a DTC.

    *A

    TCM commands lock-up ON when shift solenoid valve SLP normal

    *B

    TCM commands lock-up ON when shift solenoid valve SLP stuck OFF

    *1

    Shift Solenoid Valve SLP

    *2

    Shift Solenoid Valve SLG

    *3

    Shift Solenoid Valve SLU

    *4

    Sequence Valve

    *5

    Lock Up Control Valve

    *6

    Lock-Up Clutch

    *a

    Lock-up ON

    *b

    Lock-up OFF

    *c

    Shift solenoid valve SLP stuck OFF

    -

    -

    Oil Pressure Flow

    Valve Movement

Detection condition from C1 clutch operation:
  • Under normal conditions, when the TCM requests the shift mode be changed to gear mode, line pressure is applied from the shift solenoid SL1 to engage the C1 clutch and gear mode is entered.

    When the shift solenoid valve SLP is stuck OFF, if the TCM requests the shift mode to be changed to gear mode, line pressure from the shift solenoid valve SLP is applied to the sequence valve and in turn line pressure is applied to the clutch apply control valve.

    As a result, the clutch apply control valve blocks the line pressure from being applied to the C1 clutch. The C1 clutch cannot be engaged and the shift mode cannot be changed.

    In this case, when the TCM requests the shift mode to be changed to gear mode, it detects that gear mode is not entered (the C1 clutch is not engaged and the difference between the transmission revolution sensor (NT) signal and transmission revolution sensor (NC1) signal exceeds the threshold) and determines that the shift solenoid valve SLP is stuck OFF, illuminates the MIL and stores a DTC.

    *A

    TCM commands C1 clutch engagement when shift solenoid valve SLP normal

    *B

    TCM commands C1 clutch engagement when shift solenoid valve SLP stuck OFF

    *1

    Shift Solenoid Valve SLP

    *2

    Shift Solenoid Valve SL1

    *3

    Sequence Valve

    *4

    Clutch Apply Control Valve

    *5

    C1 Clutch

    -

    -

    *a

    Shift solenoid valve SLP stuck OFF

    -

    -

    Oil Pressure Flow

    Valve Movement

P281F71 (Shift solenoid valve SLP ON and OFF stuck):

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

MONITOR STRATEGY

Related DTCs

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

Required sensors/Components

Crankshaft position sensor

Transmission revolution sensor (NT)

Transmission revolution sensor (NC1)

Transmission revolution sensor (NSS)

Transmission revolution sensor (NOUT)

Vehicle speed sensor

CVT fluid temperature sensor

Engine coolant temperature sensor

Oil pressure sensor

Shift solenoid valve SL1

Shift solenoid valve SL2

Shift solenoid valve SLP

Shift solenoid valve SLS

Shift solenoid valve SLG

Frequency of operation

Continuous

Duration

Case 1:
  • OFF malfunction: 1.5 sec.

    ON malfunction: 2 sec.

Case 2:
  • OFF malfunction (A): 1 sec.

    OFF malfunction (B): 2 sec.

    OFF malfunction (C): 1 sec.

    OFF malfunction (D): 2 sec.

    OFF malfunction (E): 2 sec.

MIL operation

Case 1: 1 driving cycle

Case 2: 2 driving cycles

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All

ETC system

(Electronic throttle control system)

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)

KCS sensor circuit

(Knock sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0327, P0328)

ECT sensor circuit

(Engine coolant temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0117, P0118)

IAT sensor circuit

(Intake air temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0112, P0113)

Crankshaft position sensor "A" circuit

(Crankshaft position sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0335, P0337, P0338)

CAN communication between ECM and TCM

Not system down

(MIL illuminated by following codes: U0100, U0101)

Low voltage flag

OFF

Transmission fluid pressure sensor "A" circuit

(Oil pressure sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0842, P0843)

Pressure control solenoid "J" circuit

(Shift solenoid valve SLP)

Not circuit malfunction

(MIL illuminated by following codes: P2826, P2827)

Pressure control solenoid "K" circuit

(Shift solenoid valve SLS)

Not circuit malfunction

(MIL illuminated by following codes: P282F, P2830)

Torque converter clutch pressure control solenoid circuit

(Shift solenoid valve SLU)

Not circuit malfunction

(MIL illuminated by following codes: P2763, P2764)

Pressure control solenoid "A" circuit

(Shift solenoid valve SL1)

Not circuit malfunction

(MIL illuminated by following codes: P0962, P0963)

Pressure control solenoid "B" circuit

(Shift solenoid valve SL2)

Not circuit malfunction

(MIL illuminated by following codes: P0966, P0967)

Pressure Control Solenoid "M" circuit

(Shift solenoid valve SLG)

Not circuit malfunction

(MIL illuminated by following codes: P08CA, P08CB)

Transmission fluid temperature sensor "A" circuit

(CVT fluid temperature sensor)

Not circuit malfunction

(MIL illuminated by following codes: P0712, P0713)

Turbine speed sensor "A" circuit

(Transmission revolution sensor (NT))

Not circuit malfunction

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

Intermediate shaft speed sensor "C" circuit

(Transmission revolution sensor (NSS))

Not circuit malfunction

(MIL illuminated by following codes: P07C9, P07CA, P2751)

Output speed sensor circuit

(Transmission revolution sensor (NOUT))

Not circuit malfunction

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

Intermediate shaft speed sensor "B" circuit

(Transmission revolution sensor (NC1))

Not circuit malfunction

(MIL illuminated by following codes: P07C7, P07C8, P2747)

Gear shift position circuit

Not circuit malfunction

(MIL illuminated by following codes: P0916, P0917)

Case 1:
  • OFF malfunction

    Tire

    Not slipping

    ECT

    60°C (140°F) or more

    Spark advance from MAX. retard timing by KCS control

    0°CA or more

    Shift solenoid valve SLP

    Operating shift control by TCM command

    Engine speed

    500 rpm or more

    Primary sheave speed

    100 rpm or more

    Secondary sheave speed

    150 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)

    l Target clamping pressure - Actual clamping pressure l

    Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

    Actual clamping pressure

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

    Any of the following conditions are met: (a) or (b)

    -

    (a) Gear mode clutch

    Engaged

    (b) Belt mode clutch

    Engaged

    ON malfunction (1st judgment)

    Tire

    Not slipping

    ECT

    60°C (140°F) or more

    Spark advance from MAX. retard timing by KCS control

    0°CA or more

    Shift solenoid valve SLP

    Operating shift control by TCM command

    Engine speed

    500 rpm or more

    Primary sheave speed

    100 rpm or more

    Secondary sheave speed

    150 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)

    l Target clamping pressure - Actual clamping pressure l

    Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

    Any of the following conditions are met: (a) or (b)

    -

    (a) Gear mode clutch

    Engaged

    (b) Belt mode clutch

    Engaged

    ON malfunction (2nd judgment)

    Tire

    Not slipping

    ECT

    60°C (140°F) or more

    Spark advance from MAX. retard timing by KCS control

    0°CA or more

    Shift solenoid valve SLP

    Operating shift control by TCM command

    Engine speed

    500 rpm or more

    Primary sheave speed

    100 rpm or more

    Secondary sheave speed

    150 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)

    l Target clamping pressure - Actual clamping pressure l

    Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

    Any of the following conditions are met: (a) or (b)

    -

    (a) Gear mode clutch

    Engaged

    (b) Belt mode clutch

    Engaged

    Actual clamping pressure

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

    Following condition is met once after 1st judgment

    -

    - Vehicle speed

    Less than 10 km/h (6 mph)

Case 2:
  • OFF malfunction (A)

    Shift solenoid valve SLP

    Operating shift control by TCM command

    Engine speed

    500 rpm or more

    Synchronizer

    Engaged

    Turbine speed

    More than 0 rpm

    Any of the following conditions are met: (a) or (b)

    -

    (a) Gear mode clutch speed

    More than 0 rpm

    (b) All of the following conditions are met

    -

    - Gear mode clutch speed

    0 rpm

    - Output speed

    0 rpm

    OFF malfunction (B)

    Engine speed

    550 rpm or more

    Transmission fluid temperature

    -10°C (14°F) or more

    Time after following condition is met

    0.5 sec. or more

    - l Variation of the accelerator pedal angle l

    (within 32.768 msec.)

    Less than 0.5%

    Shift solenoid valve SLS

    Operating clamping pressure control by TCM command

    ECT

    60°C (140°F) or more

    Spark advance from MAX. retard timing by KCS control

    0°CA or more

    Gear and belt mode clutch

    Either engagement or disengagement

    OFF malfunction (C)

    Shift solenoid valve SLP

    Operating shift control by TCM command

    Engine speed

    500 rpm or more

    Secondary sheave torque

    40 N*m (408 kgf*cm, 30 ft.*lbf) or more

    Accelerator pedal release flag

    OFF

    OFF malfunction (D)

    Any of the following conditions are met: (a) or (b)

    -

    (a) Gear mode clutch

    Engaged

    (b) Reverse clutch

    Engaged

    Engine speed

    1000 rpm or more

    Shift solenoid valve SLP

    Operating shift control by TCM command

    OFF malfunction (E)

    Engine speed

    550 rpm or more

    Transmission fluid temperature

    -10°C (14°F) or more

    Time after following condition is met

    0.5 sec. or more

    - l Variation of the accelerator pedal angle l

    (within 32.768 msec.)

    Less than 0.5%

    Shift solenoid valve SLS

    Operating clamping pressure control by TCM command

    ECT

    60°C (140°F) or more

    Spark advance from MAX. retard timing by KCS control

    0°CA or more

    Gear and belt mode clutch

    Either engagement or disengagement

TYPICAL MALFUNCTION THRESHOLDS

Case 1:
  • OFF malfunction

    Target gear ratio

    2 or more

    Actual gear ratio

    Less than 0.55

    ON malfunction
    It is necessary to have 2 judgments per driving cycle.

    2nd judgment: pending fault code ON

    Target gear ratio

    Less than 1.1

    Actual gear ratio

    1.8 or more

Case 2:
  • Following conditions (A), (B) and (C), or (D) and (E) are met: OFF malfunction (A)

    TCM indicate gear mode clutch

    Engagement

    l Turbine Speed - Gear mode clutch speed l

    More than 200 rpm

    OFF malfunction (B) (after OFF malfunction (A) is met)

    Target clamping pressure

    1.4 MPa (14.3 kgf/cm2, 203 psi) or more

    l Actual clamping pressure - Target clamping pressure l

    Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

    OFF malfunction (C) (after OFF malfunction (A) and (B) are met)

    TCM indicate belt mode clutch

    Engagement

    l Secondary sheave speed - Output speed l

    Less than 25 rpm

    OFF malfunction (D)

    TCM indicate lock-up clutch

    Engagement

    l Engine speed - Turbine speed l

    250 rpm or more

    OFF malfunction (E) (after OFF malfunction (D) is met)

    Target clamping pressure

    1.4 MPa (14.3 kgf/cm2, 203 psi) or more

    l Actual clamping pressure - Target clamping pressure l

    Less than 0.5 MPa (5.1 kgf/cm2, 73 psi)

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

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

    Click here

    HINT:

    [*1]: Normal judgment procedure.

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

  6. Stop the vehicle.
  7. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  8. Input the DTC: P281F00 or P281F71.
  9. 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

    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

  • Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

HINT:

If any DTCs other than P281F00 or P281F71 are output, perform troubleshooting for those DTCs first.

PROCEDURE

1.

CHECK DTC OUTPUT (IN ADDITION TO DTC P281F00 AND P281F71)

(a) Enter the following menus:

Powertrain > Transmission > Trouble Codes

(b) Read the DTCs using the GTS.

HINT:

If DTC P281F12 or P281F14 is output, perform troubleshooting for that DTC first.

Result

Proceed to

Only DTC P281F00 and/or P281F71 is output

A

DTC P281F00 and/or P281F71 and P07457F, P07757F or P275600 are output

B

DTC P281F00 and/or P281F71 and P281F12 are output

C

DTC P281F00 and/or P281F71 and P281F14 are output

D

DTC P281F00 and/or P281F71 and DTCs other than P07457F, P07757F, P275600, P281F12 and P281F14 are output

E

B

GO TO STEP 2

C

GO TO DTC CHART (DTC P281F12)

D

GO TO DTC CHART (DTC P281F14)

E

GO TO DTC CHART

A

2.

REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

Click here

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

    READ NEXT:

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