2001 TOYOTA PRIUS Service Repair Manual

W 2000 TOYOTA MOTOR CORPORATIONAll rights reserved. This book may not be repro-
duced or copied, in whole or in part, without the
written permission of Toyota Motor Corporation.
First Printing: Apr. 5, 2000 01-000405-00
FOREWORD
To assist you in your sales and service activities, this manual explains the main characteristics of the new PRIUS,
in particular providing a technical explanation of the construction and operation of new mechanisms and new
technology used.
Applicable models: NHW11 series
This manual is divided into 4 sections.
1. Introduction ± Exterior appearance and model code.
2. New Model Outline ± Explanation of the product to give a general understanding of its features.
3. Technical Description ± Technical explanation of the construction and operation of each new system and
component.
4. Appendix ± Major technical specifications of the vehicle.
CAUTION, NOTICE, REFERENCE and NOTE are used in the following ways:
CAUTION
A potentially hazardous situation which could result in injury to people may occur
if instructions on what to do or not do are ignored.
NOTICEDamage to the vehicle or components may occur if instructions on what to do or not
do are ignored.
REFERENCEExplains the theory behind mechanisms and techniques.
NOTENotes or comments not included under the above 3 titles.
For detailed service specifications and repair procedures, refer to the following Repair Manuals:
Manual Name
Pub. No.

2001 PRIUS Repair Manual

2001 PRIUS Electrical Wiring DiagramRM778U
EWD414U
All information contained herein is the most up-to-date at the time of publication. We reserve the right to make
changes without prior notice.

EXTERIOR APPEARANCE
2
182IN01
182IN02

MODEL CODE AND MODEL LINE-UP
3
MODEL CODE
NHW11 L ± A E E E B A
12345678
1BASIC MODEL CODE1NHW11: With 1NZ-FXE Engine
2STEERING WHEEL POSITION2L: Left-Hand Drive
3MODEL NAME3A: Prius
4BODY TYPE4E: 4-Door Sedan
5GEAR SHIFT TYPE5E: Automatic, Column
6GRADE6E: Standard
7ENGINE SPECIFICATION7B: Atkinson
DESTINATION
8A: U.S.A.
K: Canada
MODEL LINE-UP
TRANSAXLE
DESTINATIONENGINEBODY
TYPEGRADEAutomaticTYPE
P111
U.S.A.
1NZ FXESedanStandard
NHW11L-AEEEBA
Canada1NZ-FXESedanStandardNHW11L-AEEEBK

4
± MEMO ±

NEW MODEL OUTLINE
INTERIOR
Easy-to-use luggage
compartment with ample space High point of vision for
easier understanding of
surrounding conditionsSpacious head clearance
for a more open feel
Ideal hip point height for easy access
182MO05
182MO06
Multi±Information Display
Meter
10
An interior which reflects the type of
comfort that will be regarded as a must in
cars hereinafter.
Package
The Prius package gives highest priority to driver and passenger
comfort.

A spacious cab that is hard to imagine in a car of this size.

Spacious head clearance for a more open feel.

Ideal seat height for easy access.

An easy-to-use luggage compartment with ample space.
Instrument Panel
The instrument panel is a balanced combination of functionality and
symmetry.

Human-engineered layout perfectly suited to the new age, with centrally positioned operational functions.

NEW MODEL OUTLINE
(For U.S.A.)182MO07
Seat back pocket
(Driver's and
passenger's seat)
Driver's seat Passenger's seat
182MO08182MO09
A ± A Cross Section
Child seat
CRS lower anchorage
CRS anchor bracket
182MO10
A
A
Seat Back
Seat Cushion Child seat
11
Meter
A digital-display combination meter is located in the uppermost, center position of the instrument panel. This
ensures ease of visual confirmation, including that of all indicators.
Seat
[Front Seat]

The pads fitted on the side of the seatback are of a different degrees of hardness, ensuring a superior hold.

A seatback pocket has been included on the front seat providing additional and convenient storage space.
[Rear Seat]

Three CRS anchor brackets that
FMVSS225-certified have been fitted on the
top section of the package tray trim to facili-
tate the mounting of child seats.

An FMVSS225-certified child-seat CRS
lower anchorage is fitted on both outer-side
seats.

NEW MODEL OUTLINE
MAIN MECHANISM
12
Low-emission & high-fuel efficiency.
TOYOTA hybrid system leading the way into the next
generation.
Tackling the challenge for high fuel efficiency and
low emissions
Prius - the mass-production gasoline hybrid vehicle - already meets all of the various strict emission levels
being proposed throughout the world, well ahead of the competition. What's more, through the use of the
hybrid system, surpassing fuel efficiency and a massive reduction in CO
2 has become a reality. The Prius
can truly be acclaimed as ªthe clean and environmentally friendly vehicle.º
Emission Reduction Features
1. Precision Emission Control
Through full utilization of the two Oxygen sensors, precision emission control is made possible even when
the engine is frequently stopped and re±started. Furthermore, excellent purification of exhaust gas is ensured
through the catalytic converter, resulting in reduced emissions.
2. Vapor Reducing Fuel Tank System
We have developed a new fuel tank system that can dramatically reduce the amount of fuel vapor generated
in the tank both when the vehicle is moving as well as when it is at a standstill. This system is the first one
in the world to be used.
3. TOYOTA HC Adsorber and Catalyst System
A new system has been adopted which adsorbs the HC that is emmitted between the time the engine is cold-
started and the catalytic converter is still cool and not yet activated, until the time the catalytic converter be-
comes active.
After the catalytic converter has been activated, the HC disassociates little by little and is then purified.
4. Adoption of a Thin-walled High-density Cell Catalytic Converter
In order to reduce the amount of time taken until the catalytic converter is activated, we developed a catalytic
chamber with a super thin ceramic wall. Also, high-density cells have been utilized as a measure to improve
strength and increase contact area with exhaust gas. Through these measures we have been able to achieve
a balance of reliability and purification efficiency.