Toyota Prius: Steering Angle Sensor

• Removal
• Installation

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 steering angle sensor 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
Steering sensor	Update ECU security key	Toyota Prius Vehicle Control History (RoB) are stored

NOTICE:

If both the spiral cable sub-assembly and the steering sensor are malfunctioning, replace them with a new spiral cable with sensor sub-assembly.

HINT:

When the cable is disconnected / reconnected to the auxiliary 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 Toyota Prius vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the Toyota Prius vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1 Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2	Reset back door close position
Air Conditioning System	for HEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY	-	-	-	-
2	STEERING SENSOR	89245B		-	-

*1

SPIRAL CABLE SUB-ASSEMBLY

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PROCEDURE

1. REMOVE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

Click here

2. REMOVE STEERING SENSOR

NOTICE: Remove the steering sensor from the spiral cable sub-assembly only when replacing the spiral cable sub-assembly or the steering sensor. Removing the steering sensor from the spiral cable sub-assembly without using a lock pin may result in the center position of the steering sensor becoming misaligned. Therefore, make sure to use the lock pin provided with a new spiral cable sub-assembly when removing the steering sensor from the spiral cable sub-assembly. When replacing the spiral cable sub-assembly:

*a

Guide

*b

Pin

(1) Disengage the 6 claws, 2 guides and 2 pins, and remove the steering sensor from the spiral cable sub-assembly.

NOTICE:

Do not damage the claws or pins of the spiral cable sub-assembly.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	INSPECT SPIRAL CABLE SUB-ASSEMBLY	84306		-	-
2	STEERING SENSOR	89245B		-	-
3	SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY	-		-	-
4	UPPER STEERING COLUMN COVER	45286B	-	-	-
5	LOWER STEERING COLUMN COVER	45287	-	-	-
6	ALIGN FRONT WHEELS FACING STRAIGHT AHEAD	-		-	-
7	ADJUST SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY	84306		-	-

*1

SPIRAL CABLE SUB-ASSEMBLY

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Procedure		Part Name Code
8	STEERING WHEEL ASSEMBLY	45100		-	-
9	HORN BUTTON ASSEMBLY	45130		-	-
10	NO. 3 STEERING WHEEL COVER LOWER	45187	-	-	-
11	NO. 2 STEERING WHEEL COVER LOWER	45186	-	-	-
12	CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL	-	-	-	-
13	UPDATE ECU SECURITY KEY	-	-	-
14	INSPECT SRS WARNING LIGHT	-	-	-
15	INSPECT HORN BUTTON ASSEMBLY	45130	-	-
16	CHECK STEERING WHEEL CENTER POINT	-	-	-
17	INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL	-	-	-

Tightening torque for "Major areas involving basic Toyota Prius vehicle performance such as moving/turning/stopping" : N*m (kgf*cm, ft.*lbf)

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PROCEDURE

1. INSPECT SPIRAL CABLE SUB-ASSEMBLY

Click here

2. INSTALL STEERING SENSOR

*a	Guide	*b	Pin
*c	Lock Pin	-	-

(1) Align the 2 pins and 2 guides, and engage the 6 claws to install the steering sensor to the spiral cable sub-assembly.

(2) Remove the lock pin from the steering sensor.

3. INSTALL SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

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4. INSTALL UPPER STEERING COLUMN COVER

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5. INSTALL LOWER STEERING COLUMN COVER

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6. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD

7. ADJUST SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

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8. INSTALL STEERING WHEEL ASSEMBLY

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9. INSTALL HORN BUTTON ASSEMBLY

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10. INSTALL NO. 3 STEERING WHEEL COVER LOWER

Click here

11. INSTALL NO. 2 STEERING WHEEL COVER LOWER

Click here

12. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

for M20A-FXS: Click here

for 2ZR-FXE: Click here

13. UPDATE ECU SECURITY KEY

Click here

HINT:

When the steering sensor is replaced with a new one, ECU security key is necessary.

14. INSPECT SRS WARNING LIGHT

Click here

15. INSPECT HORN BUTTON ASSEMBLY

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16. CHECK STEERING WHEEL CENTER POINT

Click here

17. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system are used.

Click here