2000 TOYOTA CAMRY evap

NF
NEW FEATURES Ð 5S-FNE ENGINE19
ENGINE CONTROL SYSTEM
1. General
An engine control system based on the 5S-FE engine has been adopted. The knock sensor has been discontin-
ued because natural gas has a high octane value and is less susceptible to knocking.
The engine control system of 5S-FNE and 5S-FE engines are compared below.
System
Outline5S-FNE5S-FE
SFI
Sequential
A D-type SFI system is used, which indirectly detects
intake air volume by manifold absolute pressure sensor.
Sequential
Multiport Fuel
Injection
The fuel injection system is a sequential multiport fuel
injection system.
Ignition timing is determined by the ECM based on sig-
nals from various sensors.
ESA
Electronic Spark
AdvanceThe ECM corrects the ignition timing in response to en-
gine knocking in accordance with the signals received
from the knock sensor.
Ð
Advance
Torque control correction during gear shifting had been
used to minimize the shift shock.*1
IAC
(Idle Air Control)A rotary solenoid type IAC valve controls the fast idle
and idle speeds.
(1-Coil Type
Built-in Driver)(2-Coil Type)
Fuel Pump ControlFuel pump operation is controlled by signal from the
ECM.Ð
Fuel Cut-Off
Control
The fuel shutoff valves for the fuel tank, fuel pressure
regulator, and delivery pipe are shut off to stop the sup-
ply of fuel when the ignition switch is turned OFF or
during abnormal conditions (such as engine stalling,
SRS airbag deployed, etc.).
Ð
Oxygen Sensor
and Air Fuel Ratio
Sensor
Heater ControlMaintains the temperature of the oxygen sensor and air
fuel ratio sensor at an appropriate level to increase accu-
racy of detection of the oxygen concentration in the ex-
haust gas.
*2
EGR Cut-Off
ControlCuts off EGR according to the engine condition to
maintain drivability of the vehicle and durability of the
EGR components.

Evaporative
Emission ControlThe ECM controls the purge flow of evaporative emis-
sions (HC) in the charcoal canister in accordance with
engine conditions.
Ð
Air Conditioning
Cut-Off ControlBy turning the air conditioning compressor ON or OFF
in accordance with the engine condition, drivability is
maintained.
*3*3
When the ECM detects a malfunction, the ECM diag-
noses and memorized the failed section.
DiagnosisThe diagnosis system includes a function that detects a
malfunction in the evaporative emission control sys-
tem.
Ð
Fail-Safe
When the ECM detects a malfunction, the ECM stops
or controls the engine according to the data already
stored in memory.

*1: Only for Automatic Transaxle Model
*
2: Air fuel ratio sensor only for California specification model.
*
3: The air conditioning magnet clutch controled by the ECM

* 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

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
Position of Parts in Engine Compartment
[5S±FE]
I 1 Idle Air Control Valve
I 3 Ignition Coil and Igniter No.1
I 4 Ignition Coil and Igniter No.2
I 8 Injector No.1
I 9 Injector No.2
I 10 Injector No.3
I 11 Injector No.4
I 14 Intake Air Temp. Sensor
K 1 Knock Sensor 1
M 1 Manifold Absolute Pressure Sensor
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 4 VSV (EGR)
V 5 VSV (EVAP)
W 1 Washer Level Warning SW
W 2 Washer Motor
W 3 Water Temp. Sender
W 4 Water Temp. SW No.1

G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 12 A/C Amplifier
A 13 A/C Evaporator Temp. Sensor
A 14 A/C SW
A 15 ABS and Traction ECU
A 16 ABS and Traction ECU
A 17 ABS and Traction ECU
A 18 ABS ECU
A 19 ABS ECU
A 20 Air Vent Mode Control Servo Motor
A 22 Airbag Squib (Front Passenger Airbag Assembly)
A 23 Airbag Squib (Steering Wheel Pad)
A 24 Ashtray Illumination
A 33 A/C Blower Motor Linear Controller
A 34 A/C Control Assembly
A 35 A/C Control Assembly
A 36 A/C Room Temp. Sensor
A 37 A/C Solar Sensor
A 38 Air Inlet Control Servo Motor
A 39 Air Mix Control Servo Motor
A 40 Automatic Light Control Sensor
B 3 Blower Motor
B 4 Blower Resistor
B 5 Blower SW
B 8 Blower Resistor (Low Speed)
C 4 Cigarette Lighter
C 5 Cigarette Lighter Illumination
C 6 Clock
C 7 Clutch Start SW
C 8 Combination Meter
C 9 Combination Meter
C 10 Combination MeterC 11 Combination SW
C 12 Combination SW
C 13 Combination SW
C 14 Cruise Control Clutch SW
C 15 Cruise Control ECU
C 17 Center Airbag Sensor Assembly
C 18 Center Airbag Sensor Assembly
C 19 Center Airbag Sensor Assembly
D 4 Data Link Connector 2
D 5 Data Link Connector 3
D 6 Daytime Running Light Relay (Main)
D 7 Diode (Courtesy)
D 10 Diode (Dome)
D 11 Diode (Idle±Up)
E 7 Engine Control Module
E 8 Engine Control Module
E 9 Engine Control Module
E 10 Engine Control Module
E 11 Engine Control Module
G 3 Glove Box Light and SW
H 7 Hazard SW
H 8 Heated Oxygen Sensor (Bank 1 Sensor 2)
H 9 Heater Control SW
I 15 Ignition Key Cylinder Light
I 16 Ignition SW
I 17 Integration Relay
I 18 Integration Relay

ENGINE CONTROL (1MZ±FE)
10A
MIRROR±
HEATER FROM POWER SOURCE S YSTEM (
SEE PAGE 50)
1J 1115A
STOP
1C 7 10A
TAI L
1C 9
2 1
2 1
2 1
D 19 D 10 E 25 E 13 E 12 E 111R 5
2 4AAA
53A
A
B±Y B±Y B±Y B±Y
B±Y
E2 G VG IGF IGT3 IGT2 IGT1EVP1 EGR ACIS STP ELS2 ELS
LG Y±G R±Y G± W G± WG± WW B±YG± O G±O
B±Y B±Y B±Y R±BP W±R LG±B BR±YGR
B±Y
VSV (
INTAKE AIR CONTROL)
VSV (
EGR)
VSV (
EVAP) V 6
V 5 STOP LIGHT SW S 6
JUNCTION CONNECTOR
J20
MASS AIR
FL OW METE R M 2 1 2
BR C 11KSW
IGB B
A B
J 9
JUNCTION
CONNECTORA
A
JUNCTION
CONNECTOR J11
UNLOCK WARNING SW U 1L±B L±B
W±B W±B BR B(
*1)
B(
*1)
D 22
1 THA
L±Y
J12
JUNCTION
CONNECTORB CA A
JUNCTION CONNECTORB J2 7 J28
A
A
A
D 7 E 18 E 17 A 18 19A 15 A
B , J10
IG38
1D7
1M5
1 2
1J7
1M3
,
1R 4
E 7 BA, E 8
E10
ENGINE CONTROL MODULEE D, E11C , E 9 ,
V 4
D 3D11BR A
13 24
HT OX
W L±B(
*6)
BR B±Y
(
SHIELDED)(
*6)
(
*6)
(
*6)
(
*6)
HTR OXR1+B E1
HEATED OXYGEN SENSOR
(
BANK 1 SENSOR 1) H 3
L±B L±B
TO IGNI TER

ENGINE CONTROL (5S±FE)
1 2
2 1
2 1
1
I 2 I 2
I 2
I 2
I 2 C 10 C9C23 C22 B 8B 13 C2B14 B6
B 8B1B9 B 10 B2B3B4
1 2
1 2 3 114 B B B B
2 13 2 3 1
1 3 2223 BB
BR
B±Y B±YBR BR B±Y(
*6) B±Y B±Y
BR BRY
G±BY±B
BR BRB±Y Y
LG
BR BRY
P
BRYW
B±O
P±B
V±WV
W
G(
*5)
BRB BRB±Y B±Y B±Y
PIM VC E2
E2 VCC PTNKISCO ISCC EGR EVP TPCKNK HTAF AF± AF+
PTNK VC VTA E2 PIM THA THW
VC VTA E2
(
*5)
(
*5)
(
*5)
J19
JUNCTION
CONNECTOR
IDLE AIR CONTROL VALVE
VSV (
EGR)
VSV (
EVAP) VSV
(
VAPOR PRESSURE SENSOR)
KNOCK SENSOR 1
AIR FUEL RATIO SENSOR I 1
V 4
V 5 V 7
K 1
A11
VAPOR PRESSURE
SENSORMANIFOLD ABSOLUTE
PRESSURE SENSOR V 1M 1
INTAKE AIR TEMP. SENSOR
ENGINE COOLANT TEMP. SENSORI14
E 5
ENGINE CONTROL MODULEB E 7 E 8ACE 9
(
SHIELDED)
(
SHIELDED)
+B AF+
AF± HT B±Y
ID1 10
B±Y
ID1 1
II4 5
V V
C 7C6B15 C3 B 16B 12 C2B14 B6(
*1)
(
*2)
II47
ID12 ID15II48
ID16B 7B1B9 B 11 B2B3B4
P
Y
BR P P
Y Y
BR , , DE10 ,
(
*1)
(
*2)
I 6 II23
BR
THROTTLE P OSI TI ON
SENSOR T 2BR
BR
BR
B±W(
*3)
O(
*4) (
*5)
(
*5) L(
*3)
W(
*4)

FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
1C 91J11
1 2
2 1
IK2 7IK22
IK2 9II3 10 II21
1 I 2 I 2
A 10 A 20 A21 A19 C19 B11 C4 B 6C8B15 C4C17 C5A2
2 1 B8 1 3
2 A
B4 2123
A
1 3
2 5 1
BR
B±YBR BRB±Y(
*6) B±Y
BR
BR
BR
BR
BR
B±Y PS SW THR LOCK IN PRS MGC TE1
A/C SW LOCK
B±LL±R L±W BRW±L W±L W±LG L±Y
G L±YR±BR±B R±W
R±BW
L±Y
L±W
B±R
BR
L
B±W
G±O G±O
B±YB±Y
BR
B±Y
BR
OX1 HT1 TE1 NE+ NE± G+ E LSE1 +B
10A TAIL
10A
MIRROR±
HEATER (
SHIELDED)
(
SHIELDED) (
SHIELDED)
(
*6) (
*6)(
*6)
(
*6)
L
B±R
(
*6)
DIODE
(
IDLE±UP)
HEATED OXYGEN SENSOR
(
BANK 1 SENSOR 1)
DATA LINK
CONNECTOR 1
CRANKSHAFT
POSITION SENSOR
CAMSHAFT
POSITION SENSOR
JUNCTION
CONNECTORH 3
D 1
C 2
C 1
J12
D11
JUNCTION CONNECTOR
A/C SWHEATER CONTROL SW
A/C EVAPORATOR
TEMP. SENSOR
POWER STEERING OIL PRESSURE SWFROM MG
CLT RELAY
FROM
A/C DUAL
PRESSURE SW
FROM A/ C
MAGNETIC
CLUTCH AND
LOCK SENSORJ12
A13
P 2H 9
A14* 5 : CALIFORNIA
* 6 : EXCEPT CALIFORNIA
BR
ENGINE CONTROL MODULEB E 7 E 8ACE 9 +B E1
OX HT* 1 : W/ ENGINE IMMOBILISER SYSTEM
* 2 : W/O ENGINE IMMOBILISER SYSTEM
, , DE10 , B 5C1B7D12 D6D11 A13(
*1)
(
*2)
IG3 8D 4KSW
L±B L±B L±B
TO UNLOCK
WARN ING SW
A 10 A 15 A21 A13 C18 B10 B12
IG3 4II4 3D 1IMLD
R±Y R±Y R±Y
6
IND R±YTHEFT DETERRENT
ECU T 3
(
*1)
(
*2) D 3D8D9TXCT CODE RXCK
R±L
G± W
L±Y
TO TRANSPONDER
KEY AMPLIFIER
DD
J10
JUNCTION
CONNECTORII4 9 * 3 : TMC MADE
* 4 : TMMK MADE