Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000002B8P4
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [03/2023 -           ]
Title: K120 / K121 (CVT): K121 VALVE BODY ASSEMBLY: INSPECTION; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]

INSPECTION

PROCEDURE

1. INSPECT TRANSMISSION VALVE BODY ASSEMBLY

(a) Inspect Shift Solenoid Valve SL1:

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

20°C (68°F)

5.0 to 5.6 Ω

If the result is not as specified, replace the transmission valve body assembly.

*a

Component without harness connected

(Shift Solenoid Valve SL1)

(2) Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the shift solenoid valve SL1 connector. Check that the valve moves and makes an operating sound.

NOTICE:

When using battery voltage during the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

OK:

The shift solenoid valve SL1 moves and makes an operating sound.

If the result is not as specified, replace the transmission valve body assembly.

(b) Inspect Shift Solenoid Valve SL2:

HINT:

Refer to Inspect Shift Solenoid Valve SL1.

(c) Inspect Shift Solenoid Valve SLU:

HINT:

Refer to Inspect Shift Solenoid Valve SL1.

(d) Inspect Shift Solenoid Valve SLP:

HINT:

Refer to Inspect Shift Solenoid Valve SL1.

(e) Inspect Shift Solenoid Valve SLS:

HINT:

Refer to Inspect Shift Solenoid Valve SL1.

(f) Inspect Shift Solenoid Valve SC1:

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Shift solenoid valve SC1 connector terminal - Shift solenoid valve SC1 body

20°C (68°F)

11 to 15 Ω

If the result is not as specified, replace the transmission valve body assembly.

*a

Component without harness connected

(Shift Solenoid Valve SC1)

(2) Connect a positive (+) lead from the battery to the terminal of the shift solenoid valve SC1 connector and a negative (-) lead to the shift solenoid valve SC1 body, and check that the shift solenoid valve SC1 moves and makes an operating sound.

NOTICE:

When using battery voltage during the inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.

OK:

The shift solenoid valve SC1 moves and makes an operating sound.

If the result is not as specified, replace the transmission valve body assembly.

(g) Inspect Shift Solenoid Valve SC2:

HINT:

Refer to Inspect Shift Solenoid Valve SC1.

(h) Inspect Shift Solenoid Valve SC3:

HINT:

Refer to Inspect Shift Solenoid Valve SC1.