CodeMaterial
nameHeat*
resistant
temperature
limit °C (°F)Resistance to
alcohol or gasolineNotes
AASAcrylonitrile
Acrylic Styrene80
(176)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease.)Avoid gasoline and
organic or aromatic
solvents.
ABSAcrylonitrile
Butadiene Styrene80
(176)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease).Avoid gasoline and
organic or aromatic
solvents.
AESAcrylonitrile
Ethylene Styrene80
(176)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease.)Avoid gasoline and
organic or aromatic
solvents.
ASAAcrylonitrile
Styrene
Acrylate80
(176)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease.)Avoid gasoline and
organic or aromatic
solvents.
CABCellulose
Acetate80
(176)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease.)Avoid gasoline and
organic or aromatic
solvents.
EPDMEthylene
Propylene100
(212)Alcohol is harmless.
Gasoline is harmless if applied
only for short time in small
amounts.Most solvents are
harmless but avoid
dipping in gasoline,
solvents, etc.
FRPFiber
Reinforced
Plastics180
(356)Alcohol and gasoline are
harmless.Avoid alkali.
EVAEthylene
Acetate70
(158)Alcohol is harmless if applied
only for short time in small
amounts (e.g., quick wiping to
remove grease.)Avoid gasoline and
organic oraromatic
solvents.
PAPolyamide
(Nylon)80
(176)Alcohol and gasoline are
harmless.Avoid battery acid.
PBTPolybutylene
Terephthalate160
(320)Alcohol anal gasoline are
harmless.Most solvents are
harmless.
PC Polycarbonate120
(248)Alcohol is harmless.Avoid gasoline brake
fluid, wax, wax removers
and organic solvents.
Avoid alkali.
HANDLING PRECAUTIONS
1. The repair procedure for plastic body parts must conform with the type of plastic material.
2. Plastic body parts are identified by the codes in the following chart.
3. When repairing metal body parts adjoining plastic body parts (by brazing, frame cutting, welding,
painting etc.), consideration must given to the property of the plastic.
*Temperatures higher than those listed here may result in material deformation during repair.
PLASTIC BODY PARTSPP-2
CAMRY ± NEW FEATURES
150NF118
BatteryIgnition Switch
EFI
Relay
Transponder
Key Coil
Transponder
Key AmplifierECMBody
ECU
DLC1
150NF119
Transponder Chip
24
3. Wiring Diagram
4. Construction
The engine immobiliser system consists of the transponder key (ignition key), transponder key coil, trans-
ponder key amplifier, and ECM.
Transponder Key (Ignition Key)
A transponder chip is embedded in the grip of the
ignition key. Each transponder chip contains an
individual transponder key-code (ID code). The
key does not need an internal battery to transmit
a key code.
Transponder Key Coil and Transponder Key Amplifier
The transponder key coil is a ring-shaped coil installed around the ignition key cylinder. The transponder
key amplifier is installed in the back of the key cylinder.
An electrical power circuit to provide power to the transponder key coil has been enclosed in the amplifier.
ECM
The control circuit of the engine immobiliser system has been integrated inside the ECM. As a result, the
time has been reduced taken for the engine to start in case of mismatching key code thus improving the
system's theft deterrent performance.
A maximum of 10 different transponder key codes (master key: 7 types, sub key: 3 types) can be registered
in the ECM.
CAMRY ± NEW FEATURES
150NF120
Ignition KeyElectromagnetic
Energy
Transponder
ChipKey-Code
SignalTransponder Key
AmplifierECM
150NF121
Key-Code
SignalKey-Code
Transponder
Key AmplifierKey-CodeCode Memory Circuit
Code
Comparison
Circuit
ECMSpark Plug
Injector25
5. Operation
Setting the Engine Immobiliser System
When the ignition key is removed from the key cylinder, the engine immobiliser system will be set.
Unsetting the Engine Immobiliser System
1
When the ignition key is inserted in the key cylinder, the ECM instructs the transponder key coil to sup-
ply the electromagnetic energy that enables the transponder chip to transmit a key-code signal. The
transponder chip then uses this electrical energy to transmit a key-code signal.
2
The key-code signal that has been received at the coil is amplified by the transponder key amplifier and
sent to the ECM. The key-code that has been received by the ECM is then compared to the key-code
that is stored in the ECM. The code comparison process takes place and if the codes match in a row,
the ECM unsets the immobiliser system. As a result, the engine will be able to start.
CAMRY ± NEW FEATURES 26
6. Functions
The engine immobiliser system provides the following functions:
Immobiliser Cancel Function
The immobiliser system is cancelled when the following condition is met, thus permitting authorized opera-
tion of the engine:
The ignition key has been inserted in the key cylinder (after the ECM reads the key code of the transpond-
er chip and that code matches the pre-registered key code).
New Transponder Key Code Registration Function
This function allows the registration of the key code of two master keys and a sub key to the new ECM. This
function is used if the ECM is replaced with a new one.
Additional Transponder Key Code Registration Function
This function enables the registration of the key code for a new master key or sub key, while retaining the
key codes that are already registered. This function is used for the purpose of adding a new master or sub
key. A maximum of 10 different transponder key codes (7 for master keys and 3 for sub keys) can be regis-
tered in the ECM.
Transponder Key Code Delete Function
This function deletes all the transponder key codes that are registered in the ECM except for the key code
of the master key that was used to execute the delete function.
For further details on transponder key code registration, addition, and deletion, see the 1998 Camry Repair
Manual (Pub. No. RM589U).
Appendix
B
[A]: System Title
[B]: Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish it
from the J/B
Example : Indicates Relay Block No.1
[C]: ( ) is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
[D]: Indicates related system.
[E]: Indicates the wiring harness and wiring harness
connector. The wiring harness with male terminal is
shown with arrows (
).
Outside numerals are pin numbers.
Female Male ( )
The first letter of the code for each wiring harness
and wiring harness connector(s) indicates the
component's location, e.g, ºEº for the Engine
Compartment, ºIº for the Instrument Panel and
Surrounding area, and ºBº for the Body and
Surrounding area.
When more than one code has the first and second
letters in common, followed by numbers (e.g, IH1,
IH2), this indicates the same type of wiring harness
and wiring harness connector.
[F]: Represents a part (all parts are shown in sky blue).
The code is the same as the code used in parts
position.
[G]: Junction Block (The number in the circle is the J/B
No. and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate
them from other parts.
3C indicates
that it is inside
Junction Block
No.3 Example:
[H]: When 2 parts both use one connector in common,
the parts connector name used in the wire routing
section is shown in square brackets [ ].[I]: Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red O = Orange LG = Light Green
P = Pink Y = Yellow GR = Gray
G = Green
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Example: L ± Y
L
(Blue)Y
(Yellow)
[J]: Indicates a wiring Splice Point (Codes are ºEº for the
Engine Room, ºIº for the Instrument Panel, and ºBº
for the Body).
The Location of splice Point I 5 is indicated by the
shaded section.
[K]: Indicates a shielded cable.
[L]: Indicates the pin number of the connector.
The numbering system is different for female and
male connectors.
Example :
Numbered in order
from upper left to
lower rightNumbered in order
from upper right to
lower left
Female Male
[M]: Indicates a ground point.
The first letter of the code for each ground point(s)
indicates the component's location, e.g, ºEº for the
Engine Compartment, ºIº for the Instrument Panel
and Surrounding area, and ºBº for the Body and
Surrounding area.
[N]: Page No.
H17GRAY
12X 4 2 1
X7 8X11 X
X
3
61
2
13 X 4 X
3
6 C7 L4 R6 R7 S6
[X] [O]
[P]
[Q]
[R]
[S]
[T]
[U]
[V]
[W]
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
STOP LIGHT DISCONNECTION WARNING
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
S6 STOP LIGHT SW
2±1 : Closed with the brake pedal depressed
L4 LIGHT FAILURE SENSOR
1, 2, 7±GROUND : Approx. 12 volts with the stop light SW on
4, 8±GROUND : Approx. 12 volts with the ignition SW at ON position
11±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C734L436R737
H1736R637S635
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
118R/B No.1 (Instrument Panel Left)
@@@ @@@ @@@
€€€ €€€ €€€
ÀÀÀ ÀÀÀ ÀÀÀ
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
IB20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C22Instrument Panel Wire and J/B No.3 (Instrument Panel Left Side)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE142Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV150Luggage Room Wire and Floor Wire (Luggage Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
BL50Under the Left Quarter Pillar
BO50Back Panel Center
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I544Cowl WireB1850Luggage Room Wire
SYSTEM OUTLINE
SERVICE HINTS
* The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being
abbreviations.
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
ABS = Anti±Lock Brake System
A/C = Air Conditioning
ACIS = Acoustic Control Induction System
A/T = Automatic Transaxle
COMB. = Combination
ECU = Electronic Control Unit
EGR = Exhaust Gas Recirculation
ESA = Electronic Spark Advance
EVAP = Evaporative Emission
FL = Fusible Link
J/B = Junction Block
LH = Left±Hand
M/T = Manual Transaxle
O/D = Overdrive
R/B = Relay Block
RH = Right±Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
VSV = Vacuum Switching Valve
w/ = With
w/o = Without
POWER SOURCE
HEAD RELAY [ENGINE ROOM J/B NO.2]
2±1 : Closed with the light control SW at HEAD position or the dimmer SW at FLASH position
Closed with the engine running and the parking brake pedal released (Parking brake SW off) (w/ Daytime Running
Light)
TAILLIGHT RELAY [INSTRUMENT PANEL J/B]
5±3 : Closed with the light control SW at TAIL or HEAD position
I16 IGNITION SW
2±3 : Closed with the ignition SW at ACC or ON position
2±4 : Closed with the ignition SW at ON or ST position
7±6 : Closed with the ignition SW at ON or ST position
7±8 : Closed with the ignition SW at ST position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
F4A26 (1MZ±FE)F7D26 (1MZ±FE)G126 (1MZ±FE)F4A28 (5S±FE)F7D28 (5S±FE)G128 (5S±FE)
F5B26 (1MZ±FE)F8E26 (1MZ±FE)I1630F5B28 (5S±FE)F8E28 (5S±FE)J1131
F6C26 (1MZ±FE)F9F26 (1MZ±FE)F6C28 (5S±FE)F9F28 (5S±FE)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
124Engine Room R/B No.1 (Engine Compartment Left)
224Engine Room R/B No.2 (Near the Battery)
325Engine Room R/B No.3 (Radiator Upper Support RH)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A
1B20Cowl Wire and J/B Instrument Panel J/B (Lower Finish Panel)1J20Cowl Wire and J/B Instrument Panel J/B (Lower Finish Panel)
1K
2A
2B
2C22Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2F
gg(g)
2G
2K22Cowl Wire and Engine Room J/B No 2 (Engine Compartment Left)2L22Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: GROUND POINTS
CodeSee PageGround Points Location
EB36 (1MZ±FE)Left Radiator Side SupportEB38 (5S±FE)Left Radiator Side Support
IG40Instrument Panel Brace LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E336 (1MZ±FE)Cowl WireI142Cowl WireE338 (5S±FE)Cowl Wire
SERVICE HINTS