Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002B36F
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [03/2023 -           ]
Title: K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: P08D411; Shift Solenoid "J" Control Circuit Short to Ground; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]

DTC

P08D411

Shift Solenoid "J" Control Circuit Short to Ground

DESCRIPTION

By controlling the current, the ECM controls the shift solenoid valve SC2 and switches the shift solenoid valve SL1 between the role of controlling the C1 clutch pressure and controlling the S1 synchronizer.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

DTC Output from

Priority

Note

P08D411

Shift Solenoid "J" Control Circuit Short to Ground

A short to ground is detected in the shift solenoid valve SC2 circuit (1-trip detection logic).

  • Transmission valve body assembly (Shift solenoid valve SC2)
  • Transmission wire
  • Harness and connector
  • ECM

Comes on

Engine

A

SAE Code:

P08D2

MONITOR DESCRIPTION

This DTC indicates a short to ground in the shift solenoid valve SC2 circuit. If there is a short to ground in the shift solenoid valve SC2 circuit, the ECM detects the malfunction, illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs

P08D2: Shift solenoid "J" (Shift solenoid valve SC2)/Range check

Required sensors/components

Shift solenoid valve SC2

Frequency of operation

Continuous

Duration

1 time

MIL operation

Immediate

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored

None

Battery voltage

8 V or more

Ignition switch

ON

Starter

OFF

TYPICAL MALFUNCTION THRESHOLDS

All of the following conditions are met

0.8 sec. or more

Time after command to solenoid OFF to ON

0.008192 sec. or more

Command to solenoid

ON

Solenoid terminal voltage level

Low

COMPONENT OPERATING RANGE

Shift solenoid valve SC2

Resistance: 11 to 15 Ω at 20°C (68°F)

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 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

  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. Perform the D Position Shift Test inspection in Road Test. [*1]

    Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 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.

  4. Stop the vehicle.
  5. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  6. Input the DTC: P08D411.
  7. 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.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Perform the universal trip to clear permanent DTCs.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

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

    Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: PRECAUTION

  • Check that no DTCs are stored after performing initialization.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: DTC CHECK / CLEAR

PROCEDURE

1.

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SC2)

Pre-procedure1

(a) Disconnect the C61 transmission wire connector.

Procedure1

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

13 (SC2) - Body ground

20°C (68°F)

11 to 15 Ω

Result:

Proceed to

OK

NG

*a

Component without harness connected

(Transmission Wire)

Post-procedure1

(c) Connect the C61 transmission wire connector.

NG

GO TO STEP 4

OK

2.

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

Pre-procedure1

(a) Disconnect the C160 ECM connector.

Procedure1

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C160-2 (SC2) - Body ground

20°C (68°F)

11 to 15 Ω

Post-procedure1

(c) Connect the C160 ECM connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

OK

3.

REPLACE ECM

HINT:

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

for Initialization: Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

4.

INSPECT TRANSMISSION WIRE

Pre-procedure1

(a) Disconnect the C61 transmission wire connector.

(b) Disconnect the transmission wire connector from the shift solenoid valve SC2.

HINT:

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 VALVE BODY ASSEMBLY: REMOVAL

Procedure1

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

*1

Transmission Valve Body Assembly

*2

Shift Solenoid Valve SC2

*3

Transmission Wire

-

-

*a

Shift Solenoid Valve Side

*b

Wire Harness Connector Side

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (shift solenoid valve side) or 13 (SC2) (wire harness connector side) - All other terminals

Always

10 kΩ or higher

Post-procedure1

(d) None

NG

REPLACE TRANSMISSION WIRE

OK

5.

REPLACE TRANSMISSION VALVE BODY ASSEMBLY

HINT:

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 VALVE BODY ASSEMBLY: REMOVAL

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

for Initialization: Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION