K120 / K121 (CVT): K120 PARK / NEUTRAL POSITION SWITCH: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [11/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000028H9O
Model Year Start: 2023	Model: Corolla Hatchback	Prod Date Range: [11/2022 - ]
Title: K120 / K121 (CVT): K120 PARK / NEUTRAL POSITION SWITCH: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 - ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed, installed, or replaced during park/neutral position switch assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replacement Part or Procedure	Necessary Procedure	Effect/Inoperative when not Performed	Link
1: w/o Smart Key System 2: w/ Smart Key System *3: w/ Steering Lock Function
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
	Update ECU security key	Vehicle Control History (RoB) are stored
	ECU communication ID registration (Immobiliser system)	Engine start function
	Perform reset memory CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization for Registration
Replacement of ECM*2	Code registration (Smart Key System (for Gasoline Model, Start Function))	Wireless Door Lock Control System (for Gasoline Model with Smart Key System) Smart Key System (for Gasoline Model, Entry Function) Smart Key System (for Gasoline Model, Start Function) Steering lock function*3
Replacement of ECM*1	Code registration (Immobiliser system)	Engine start Telematics System

HINT:

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: for Hatchback
Power Door Lock Control System Back door opener*1	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

PROCEDURE

1. REMOVE BATTERY

Click here

2. REMOVE ECM

Click here

3. REMOVE BATTERY CLAMP SUB-ASSEMBLY

Click here

4. DISCONNECT FLOOR SHIFT TRANSMISSION CONTROL SELECT CABLE

(a) While disengaging the clip as shown in the illustration, disconnect the floor shift transmission control select cable from the transmission control shaft lever together with the clip.

*a	Clip
*b	45° to 60°

(b) Remove the clip and disconnect the floor shift transmission control select cable from the No. 1 transmission control cable bracket.

5. REMOVE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Disconnect the park/neutral position switch assembly connector.

(b) Using a piece of wood or equivalent to secure the transmission control shaft lever to prevent it from rotating, remove the nut, washer and transmission control shaft lever from the manual valve lever shaft.

NOTICE:

If the transmission control shaft lever is not secured when loosening the nut, the manual valve link lever sub-assembly may separate from the manual valve.

*1	Transmission Control Shaft Lever
*a	Manual Valve Link Lever Sub-assembly
*b	Manual Valve

*a	Piece of Wood or Equivalent

NOTICE:

Before removing the park/neutral position switch assembly, remove any dirt or rust on the installation portion of the manual valve lever shaft. Be sure to remove the park/neutral position switch assembly straight along the manual valve lever shaft while being careful not to deform the plate spring that supports the manual valve lever shaft. If the plate spring is deformed, the park/neutral position switch assembly cannot be reinstalled correctly.