2000 TOYOTA CAMRY O2 sensor

NF
NEW FEATURES Ð SRS AIRBAD
Fuel Shutoff Valves
Front Airbag
Sensors
Airbag
Sensor
Assembly
AirbagsSeat Belt
Preten-
sionersFuel Cutoff
Signal
ECM
167CN19
SRS AIRBAG
DESCRIPTION
When the SRS airbag is deployed, a signal to shut off the supply of fuel is output by the airbag sensor
assembly to the ECM.

System Diagram 

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W±R
7. 5A
GAUGE
1 2
34
4 8 7
2111134
1 2
3 4
1 2
B18
BL FROM POWER SOURCE SYSTEM (SEE PAGE 66)
R±L
R±L G
W±B W±B
W±B
W±BW±B
W±B
Y±GR
L 4
H17
R 6
DELAY
CIRCUIT S 6
B18
3 4
R 7
BV11
G±W G±R
G±R
G±R
G±R
G±W
G±W
(W/G)
(S/D) (S/D)
C 7
(SHIELDED) BV11I 5
L L
STOP LIGHT
15
7
TO ABS ECU
BO
50
15A
STOP
IBIB
REAR LIGHTS
WARNING LIGHT
[COMB. METER] 3C 3C
IE1 14 STOP LIGHT SW
STOP LIGHT RH
[REAR COMB. LIGHT RH]
STOP LIGHT RH
[REAR COMB. LIGHT LH]
HIGH MOUNTED
STOP LIGHT
[A]
[B]
[I]
[D]
[F]
[H]
[E]
[J]
[M]
[N][K]
[L]
[G]
[C]
LIGHT FAILURE SENSOR
B HOW TO USE THIS MANUAL
*The system shown here is an EXAMPLE ONLY. It is different to the actual
circuit shown in the SYSTEM CIRCUITS SECTION.

H17GRAY
12X 4
2 1
X7 8
X11 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)

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: 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

Pins used in the system circuit.
Occupied positions, but not
applicable to the system circuit.
Unoccupied positions.
The pins shown are only for the highest grade, or only include those in the specification.
Junction Connector
Short Terminal Same ColorJunction connector (code: J1 to J40) in this manual include a short
terminal which is connected to a number of wire harnesses. Always
perform inspection with the short terminal installed. (When
installing the wire harnesses, the harnesses can be connected to
any position within the short terminal grouping. Accordingly, in
other vehicles, the same position in the short terminal may be
connected to a wire harness from a different part.)
Wire harness sharing the same short terminal grouping have the
same color.
HINT :
B
[O]: Explains the system outline.
[P]: Indicates values or explains the function for reference during troubleshooting.
[Q]: Indicates the reference page showing the position on the vehicle of the parts in the system circuit.
Example : Part ºL4º (Light Failure Sensor) is on page 36 of the manual.
*The letter in the code is from the first letter of the part, and the number indicates its order in parts
starting with that letter.
Example : L 4
Parts is 4th in order
Light Failure Sensor
[R]: Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.
Example : Connector º1º is described on page 18 of this manual and is installed on the left side of the instrument
panel.
[S]: Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.
Example : Connector º3Cº connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this
manual, and is installed on the instrument panel left side.
[T]: Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring
harness is shown first, followed by the male wiring harness).
Example : Connector ºIE1º connects the floor wire (female) and Instrument panel wire (male). It is described on
page 42 of this manual, and is installed on the left side kick panel.
[U]: Indicates the reference page showing the position of the ground points on the vehicle.
Example : Ground point ºBOº is described on page 50 of this manual and is installed on the back panel center.
[V]: Indicates the reference page showing the position of the splice points on the vehicle.
Example : Splice point ºI5º is on the Cowl Wire Harness and is described on page 44 of this manual.
[W]: Indicates connector to be connected to a part (the numeral indicates the pin No.) Explanation of pin use.
[X]: Connector Color
Connectors not indicated are milky white in color.

E
RELAY
Basically, an electrically operated
switch which may be normally
closed (1) or open (2).
Current flow through a small coil
creates a magnetic field which either
opens or closes an attached switch.
1. NORMALLY
CLOSED
2. NORMALLY
OPEN
SWITCH, MANUAL
Opens and closes
iitth b
SPEAKER
An electromechanical device which
creates sound waves from current
flow.
RELAY, DOUBLE THROW
A relay which passes current
through one set of contacts or the
other.
circuits, thereby
stopping (1) or
allowing (2) current
flow.1. NORMALLY
OPEN
2. NORMALLY
CLOSED
RESISTOR
An electrical component with a fixed
resistance, placed in a circuit to
reduce voltage to a specific value.SWITCH, DOUBLE THROW
A switch which continuously passes
current through one set of contacts
or the other.
RESISTOR, TAPPED
A resistor which supplies two or
more different non adjustable
resistance values.SWITCH, IGNITION
A key operated switch with several
positions which allows various
circuits, particularly the primary
ignition circuit, to become
operational.
RESISTOR, VARIABLE or RHEOSTAT
A controllable resistor with a variable
rate of resistance.
Also called a potentiometer or
rheostat.
SENSOR (Thermistor)
A resistor which varies its resistance
with temperature.SWITCH, WIPER PARK
Automatically returns wipers to the
stop position when the wiper switch
is turned off.
(Reed Switch Type)
SENSOR, SPEED
Uses magnetic impulses to open
and close a switch to create a signal
for activation of other components.TRANSISTOR
A solidstate device typically used as
an electronic relay; stops or passes
current depending on the voltage
applied at ºbaseº.
SHORT PIN
Used to provide an unbroken
connection within a junction block.WIRES
Wires are always drawn as
straight lines on wiring
diagrams.
Crossed wires (1) without a
black dot at the junction are
tj i d
(1) NOT
CONNECTED
SOLENOID
An electromagnetic coil which forms
a magnetic field when current flows,
to move a plunger, etc.
j
not joined;
crossed wires (2) with a
black dot or octagonal ( )
mark at the junction are
spliced (joined)
connections.
(2) SPLICED

G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[1MZ±FE]
A 1 A/C Condenser Fan Motor
A 2 A/C Magnetic Clutch and Lock Sensor
A 3 A/C Triple Pressure SW
(A/C Dual and Single Pressure SW)
A 4 ABS Actuator
A 5 ABS Actuator
A 6 ABS Actuator and ECU
A 7 ABS and Traction Actuator
A 8 ABS and Traction Actuator
A 9 ABS Speed Sensor Front LH
A 10 ABS Speed Sensor Front RH
A 28 Air Fuel Ratio Sensor (Bank 1 Sensor 1)
A 29 Air Fuel Ratio Sensor (Bank 2 Sensor 1)
A 30 A/C Ambient Temp. Sensor
A 31 Airbag Sensor Front LH
A 32 Airbag Sensor Front RH
B 1 Back±Up Light SW
B 2 Brake Fluid Level Warning SW
C 1 Camshaft Position Sensor
C 2 Crankshaft Position Sensor
C 3 Cruise Control Actuator
D 1 Data Link Connector 1
D 2 Daytime Running Light Resistor
D 3 Diode (A/C)E 1 EGR Gas Temp. Sensor
E 2 EGR Valve Position Sensor
E 3 Electronically Controlled Transmission Solenoid
E 5 Engine Coolant Temp. Sensor
E 6 Engine Hood Courtesy SW
F 1 Front Turn Signal Light and Parking Light LH
F 2 Front Turn Signal Light and Parking Light RH
F 3 Front Wiper Motor
F 4 Fusible Link Block
F 5 Fusible Link Block
F 6 Fusible Link Block
F 7 Fusible Link Block
F 8 Fusible Link Block
F 9 Fusible Link Block
G 1 Generator
G 2 Generator
H 1 Headlight LH
H 2 Headlight RH
H 3 Heated Oxygen Sensor (Bank 1 Sensor 1)
H 4 Heated Oxygen Sensor (Bank 2 Sensor 1)
H 5 Horn (High)
H 6 Horn (Low)

G
Position of Parts in Engine Compartment
[1MZ±FE]
I 1 Idle Air Control Valve
I 2 Igniter
I 5 Ignition Coil No.1
I 6 Ignition Coil No.2
I 7 Ignition Coil No.3
I 8 Injector No.1
I 9 Injector No.2
I 10 Injector No.3
I 11 Injector No.4
I 12 Injector No.5
I 13 Injector No.6
K 1 Knock Sensor 1
K 2 Knock Sensor 2
M 2 Mass Air Flow Meter
N 1 Noise Filter (Ignition)
O 1 Oil Pressure SW
P 1 Park/Neutral Position SW,A/T Indicator Light SW and
Back±Up Light SW
P 2 Power Steering Oil Pressure SWR 1 Radiator Fan Motor
S 1 Starter
S 2 Starter
T 1 Theft Deterrent Horn
T 2 Throttle Position Sensor
V 2 Vehicle Speed Sensor (Combination Meter)
V 3 Vehicle Speed Sensor
(Electronically Controlled Transmission)
V 4 VSV (EGR)
V 5 VSV (EVAP)
V 6 VSV (Intake Air Control)
W 1 Washer Level Warning SW
W 2 Washer Motor
W 3 Water Temp. Sender
W 4 Water Temp. SW No.1
W 5 Water Temp. SW No.2

G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[5S±FE]
A 1 A/C Condenser Fan Motor
A 2 A/C Magnetic Clutch and Lock Sensor
A 3 A/C Triple Pressure SW
(A/C Dual and Single Pressure SW)
A 4 ABS Actuator
A 5 ABS Actuator
A 6 ABS Actuator and ECU
A 9 ABS Speed Sensor Front LH
A 10 ABS Speed Sensor Front RH
A 11 Air Fuel Ratio Sensor
A 31 Airbag Sensor Front LH
A 32 Airbag Sensor Front RH
B 1 Back±Up Light SW
B 2 Brake Fluid Level Warning SW
C 1 Camshaft Position Sensor
C 2 Crankshaft Position Sensor
C 3 Cruise Control Actuator
D 1 Data Link Connector 1
D 2 Daytime Running Light ResistorE 3 Electronically Controlled Transmission Solenoid
E 4 Electronically Controlled Transmission Solenoid
E 5 Engine Coolant Temp. Sensor
E 6 Engine Hood Courtesy SW
F 1 Front Turn Signal Light and Parking Light LH
F 2 Front Turn Signal Light and Parking Light RH
F 3 Front Wiper Motor
F 4 Fusible Link Block
F 5 Fusible Link Block
F 6 Fusible Link Block
F 7 Fusible Link Block
F 8 Fusible Link Block
F 9 Fusible Link Block
G 1 Generator
G 2 Generator
H 1 Headlight LH
H 2 Headlight RH
H 3 Heated Oxygen Sensor (Bank 1 Sensor 1)
H 5 Horn (High)
H 6 Horn (Low)