Toyota Prius: Heated Steering Wheel Controller

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 the multiplex network steering ECU removal/installation are shown below.

CAUTION / NOTICE / HINT

CAUTION:

Be sure to read Precaution thoroughly before servicing.

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CAUTION / NOTICE / HINT

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 cooler expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	LOWER STEERING WHEEL BOSS COVER	45184	-	-	-
2	MULTIPLEX NETWORK STEERING ECU	864A1A	-	-	-

PROCEDURE

1. REMOVE LOWER STEERING WHEEL BOSS COVER

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2. REMOVE MULTIPLEX NETWORK STEERING ECU

*A

w/ Steering Touch Sensor

*B

w/ Steering Heater

(1) w/ Steering Touch Sensor:

1. Disconnect the connector and disengage the clamp.

(2) w/ Steering Heater:

1. Disconnect the connector.

(3) Remove the 2 screws, and multiplex network steering ECU.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	MULTIPLEX NETWORK STEERING ECU	864A1A	-	-	-
2	LOWER STEERING WHEEL BOSS COVER	45184	-	-	-

N*m (kgf*cm, ft.*lbf): Specified torque

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-

PROCEDURE

1. INSTALL MULTIPLEX NETWORK STEERING ECU

Torque:

2.3 N·m {23 kgf·cm, 20 in·lbf}

2. INSTALL LOWER STEERING WHEEL BOSS COVER

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