Toyota Avalon (XX50): Park / Neutral Position Switch

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Drivetrain / Ua80e Automatic Transmission / Transaxle / Park / Neutral Position Switch

Adjustment

ADJUSTMENT

CAUTION / NOTICE / HINT

NOTICE:

Before adjusting the park/neutral position switch assembly, check that the shift lever is in N.

PROCEDURE

1. SECURE VEHICLE

(a) Fully apply the parking brake and chock a wheel.

CAUTION:

Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, possibly resulting in an accident or serious injury.

2. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY

Click here

3. ADJUST PARK/NEUTRAL POSITION SWITCH ASSEMBLY

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

(b) Remove the nut, washer and transmission control shaft lever from the manual valve lever shaft sub-assembly.

(d) Align the protrusion with the neutral basic line.

*a	Neutral Basic Line
*b	Protrusion

(e) Hold the park/neutral position switch assembly in position and tighten the 2 bolts.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(f) Install the transmission control shaft lever to the manual valve lever shaft sub-assembly with the washer and nut.

Torque:

12.7 N·m {130 kgf·cm, 9 ft·lbf}

(g) Connect the park/neutral position switch assembly connector.

4. CONNECT TRANSMISSION CONTROL CABLE ASSEMBLY

Click here

5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

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Components

COMPONENTS

ILLUSTRATION

*1	BATTERY CLAMP SUB-ASSEMBLY	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	-	-

ILLUSTRATION

*1	TRANSMISSION CONTROL CABLE ASSEMBLY	*2	TRANSMISSION CONTROL SHAFT LEVER
*3	PARK/NEUTRAL POSITION SWITCH ASSEMBLY	*4	WASHER
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": Nm (kgfcm, ft.*lbf)	-	-

Inspection

INSPECTION

PROCEDURE

1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below when the transmission control shaft lever is moved to each position.

Standard Resistance:

Tester Connection	Condition	Specified Condition
4 (B) - 9 (L)	Shift lever in P or N	Below 1 Ω
1 (RB) - 3 (PL)	Shift lever in P	Below 1 Ω
1 (RB) - 2 (RL)	Shift lever in R	Below 1 Ω
1 (RB) - 8 (NL)	Shift lever in N	Below 1 Ω
1 (RB) - 7 (DL)	Shift lever in D, S, "+" or "-"	Below 1 Ω
4 (B) - 9 (L)	Shift lever not in P or N	10 kΩ or higher
1 (RB) - 3 (PL)	Shift lever not in P	10 kΩ or higher
1 (RB) - 2 (RL)	Shift lever not in R	10 kΩ or higher
1 (RB) - 8 (NL)	Shift lever not in N	10 kΩ or higher
1 (RB) - 7 (DL)	Shift lever not in D, S, "+" or "-"	10 kΩ or higher

If the result is not as specified, replace the park/neutral position switch assembly.

*a	Component without harness connected (Park/Neutral Position Switch Assembly)

Installation

INSTALLATION

PROCEDURE

1. INSTALL PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Temporarily install the park/neutral position switch assembly to the automatic transaxle case sub-assembly with the 2 bolts.

NOTICE:

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

(b) Temporarily install the transmission control shaft lever to the park/neutral position switch assembly.

*a	P
*b	N

(d) Remove the transmission control shaft lever from the park/neutral position switch assembly.

(e) Align the protrusion with the neutral basic line.

*a	Neutral Basic Line
*b	Protrusion

(f) Hold the park/neutral position switch assembly in that position and tighten the 2 bolts.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

(g) Install the transmission control shaft lever to the manual valve lever shaft sub-assembly with the washer and nut.

Torque:

12.7 N·m {130 kgf·cm, 9 ft·lbf}

(h) Connect the park/neutral position switch assembly connector.

2. CONNECT TRANSMISSION CONTROL CABLE ASSEMBLY

(a) Connect the transmission control cable assembly to the transmission control shaft lever as shown in the illustration.

NOTICE:

Before connecting the transmission control cable assembly, check that the park/neutral position switch assembly and shift lever are in N.

*a	Correct
*b	Incorrect

3. INSTALL BATTERY CLAMP SUB-ASSEMBLY

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4. INSTALL ECM

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5. INSTALL BATTERY

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6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY OPERATION

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7. INSPECT SHIFT LEVER POSITION

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8. ADJUST SHIFT LEVER POSITION

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On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. SECURE VEHICLE

(a) Fully apply the parking brake and chock a wheel.

CAUTION:

Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, possibly resulting in an accident or serious injury.

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY OPERATION

(a) Turn the engine switch on (IG).

(b) Depress the brake pedal and check that the engine can be started when the shift lever is in N or P, but cannot be started in any other position.

(c) Check that the back-up lights come on when the shift lever is moved to R, but do not come on with the shift lever in any other position.

If the operation is not as specified, check the park/neutral position switch assembly.

Click here

Removal

REMOVAL

CAUTION / NOTICE / HINT

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

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Departure Alert System (w/ Steering Control)
		Pre-collision System
		Intelligent Clearance Sonar System*1
		Lighting System (for Gasoline Model with Cornering Light)
	Memorize steering angle neutral point	Parking Assist Monitor System
	Memorize steering angle neutral point	Panoramic View Monitor System
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
Replacement of ECM	ECU communication ID registration (Immobiliser system)	Engine start function
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization for Registration
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization for Registration
Replacement of ECM	Code registration (Smart key System (for Start Function))	Wireless Door Lock Control System Smart Key System (for Entry Function) Smart Key System (for Start Function) Steering lock function

*1: When performing learning using the Techstream.
Click here
*2: Not necessary when ECM replaced with new one

NOTICE:

Before removing the park/neutral position switch assembly, check that the shift lever is in N.

PROCEDURE

1. SECURE VEHICLE

(a) Fully apply the parking brake and chock a wheel.

CAUTION:

Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, possibly resulting in an accident or serious injury.

2. REMOVE BATTERY

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3. REMOVE ECM

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4. REMOVE BATTERY CLAMP SUB-ASSEMBLY

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5. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY

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

*a	Clip
*b	45° to 60°

6. REMOVE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

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

(b) Remove the nut, washer and transmission control shaft lever from the manual valve lever shaft sub-assembly.

NOTICE:

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

Oil Pump

Shift Lever Knob

See More:

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