Map sensor TOYOTA CAMRY 2000 Service User Guide (4770 Pages)

2. INSPECT POWER OUTPUT OF MAP SENSOR
(a) Turn the ignition switch ON.
(b) Disconnect the vacuum hose on the air intake cham±
ber side.
(c) Connect a voltmeter to terminals PIM and E2 of the
ECM, and measure the output voltage under ambient
atmospheric pressure.
(d) Apply vacuum to the MAP sensor in 13.3 kPa (100
mmHg, 3.94 in.Hg) segments to 66.7 kPa (500 mmHg,
19.69 in.Hg).
(e) Measure the voltage drop from step
(c) above for each
segment.
Voltage drop:
Applied
Vacuum
kPa
(mmHg
in.Hg)66.7
( 500
19.69) 53.5
( 400
15.75) 40.0
( 300
111.8) 13.3
(100
3.94 )26.7
(200
7.87)
Voltage
drop V0.7±0.9
0.3±0.5
1.1 ±1.3 1.5 ± 1.71.9 ± 2.1
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±222

Clearance between stop screw and lever
0 mm (0 in.)
0.50 mm (0.020 in.)
0.70 mm (0.028 in.)
Throttle valve fully open
SERVICE SPECIFICATIONS
SERVICE DATA
Resistance
Injection volume
Difference between each cylinder
Fuel leakage
Throttle body fully closed angle
Throttle opener setting speed
VSV for Fuel
pressure
(California
only)
EG R gas
temperature
sensorResistance (+B ± ISCC or ISCO) Throttle
position
sensor Fuel pressure
regulator
A/C idle ±up
valvePower source voltage
Fuel return rpm Fuel pressure
Throttle body
Fuel cut rpm VSV for EG Rat no vacuum
MAP sensor Fuel pump
IAT sensorECT sensor
Resistance Resistance
Resistance
Resistance Resistance
Resistance Resistance IAC valve Injector
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±236

REFERENCE VALUE OF ECM DATA
*1: If the engine coolant temp, sensor circuit is open or shorted, the ECM assumes an engine coolant temp, value of 80C (176F).
*2: When feedback control is forbidden, 0 V is displayed,
*3: A/T only.Closed throttle position
Wide open throttle
From closed throttle position to wide open throttle
When shifting from ªPº or ªNº position into a position
other than ªPº or ªNºEngine idling at normal operating temp.
increase engine loadEngine cold to hot
Engine idling at normal operating temp.
RPM stable at 2,500 rpm with normal operating temp.
PRM stable at 2,500 rpm with normal operating temp.RPM kept stable (Comparison with tachometer)
During driving (Comparison with speedometer)Below 5
Above 70
Gradually increases Approx. 180 ~ 280 mm Hg
Gradually increases
Engine idling at normal operating temp.Engine idling at normal operating temp.Gradually decreases
Approx. 2 ~ 5 msecs
REFERENCE VALUE
Engine at normal operating temp. 75 ± 95C (185 ± 203F) *1
Closed throttle position
RICH LEAN is repeated Increase engine speed
No large differences Inspection condition
Gradually increases
No great changes
2.50+ 1.25 V *2
During cranking
PNP SIGNAL *3A/C switch ON ENGINE SPEEDReference value
TARGET A/F LVEHICLE SPD
A/F FB LEFT
A/C SIGNALSTA SIGNAL
CTP SIGNAL30~60% INJECTOR
THROTTLEIAC DUTYIGNITION
G EAR MAPItem
OxLECT
HINT: ECM data can be monitored by TOYOTA hand±held
tester.
1. Hook up the TOYOTA hand±held tester to the DLC2.
2. Monitor ECM data by following the prompts on the tester
screen.
Please refer to the TOYOTA hand±held tester operator's
manual for further details.
± 5S±FE ENGINEREFERENCE VALUE OF ECM DATAEG1±326

INTRODUCTIONGLOSSARY OF SAE AND TOYOTA TERMS ±
IN±7
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module±
IFIIndirect Fuel InjectionIndirect Injection
IFSInertia Fuel±Shutoff±
ISCIdle Speed Control±
KSKnock SensorKnock Sensor
MAFMass Air FlowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure
Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure±
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Light
MSTManifold Surface Temperature±
MVZManifold Vacuum Zone±
NVRAMNon±Volatile Random Access Memory±
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn±Board DiagnosticOn±Board Diagnostic (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Converter (OC), CCo
OPOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module±
PNPPark/Neutral Position±
PROMProgrammable Read Only Memory±
PSPPower Steering Pressure±
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module±
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger Bypass±
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter±
SRIService Reminder Indicator±
SRTSystem Readiness Test±
STScan Tool±
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter
TCMTransmission Control ModuleTransmission ECU (Electronic Control Unit)
TPThrottle PositionThrottle Position
TRTransmission Range±

DI±14
± DIAGNOSTICSENGINE (5S±FE)
249 Author: Date:
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ºNormal Conditionº are representative values, so a vehicle may still be
normal even if its value varies from those listed here. So do not decide whether a part is faulty or
not solely according to the ºNormal Conditionº here.
(a) CARB mandated signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*1
FUEL SYS #1
Fuel System Bank 1
OPEN: Air±fuel ratio feedback stopped
CLOSED: Air±fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOAD
Calculator Load:
Current intake air volume as a proportion of max.
intake air volumeIdling: 19.7 ~ 50.4 %
Racing without load (2,500rpm): 16.8 ~ 47.4 %
COOLANT TEMP.Engine Coolant Temp. Sensor ValueAfter warming up: 80 ~ 95°C (176 ~ 203°F)
SHORT FT #1Short±term Fuel Trim Bank 10 ± 20 %
LONG FT #1Long±term Fuel Trim Bank 10 ± 20 %
ENGINE SPDEngine SpeedIdling: 650 ~ 750 rpm
VEHICLE SPDVehicle SpeedVehicle Stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance:
Ignition Timing of Cylinder No. 1Idling: BTDC 0 ~ 10°
INTAKE AIRIntake Air Temp. Sensor ValueEquivalent to Ambient Temp.
MAPAbsolute Pressure inside Intake Manifold
Idling: 20 ~ 51 kPa
Racing without load (2,500 rpm):
17 ~ 48 kPa
THROTTLE POS
Voltage Output of Throttle Position Sensor
Calculated as a percentage:
0 V "0%, 5 V "100 %Throttle Fully Closed: 6 ~ 16 %
Throttle Fully Open: 64 ~ 98 %
O2S B1, S1Voltage Output of Heated Oxygen Sensor
Bank 1 Sensor 1Idling: 0.1 ~ 0.9 V (0.56 ~ 0.76 V *2)
O2FT B1, S1
Heated Oxygen Sensor Fuel Trim Bank 1
Sensor 1
(Same as SHORT FT #1)
0 ± 20 %
A/FS B1, S1 *3Voltage Output of A/F SensorIdling: 2.8 ~ 3.8 V
A/FFT B1, S1 *3A/F Sensor Fuel Trim (Same as SHORT FT #1)0 ± 20 %
O2S B1, S2Voltage Output of Heated Oxygen Sensor
Bank 1 Sensor 2Driving at 50 km/h (31 mph): 0.05 ~ 0.95 V
*1: If no conditions are specifically stated for ºldlingº, it means the shift lever is at N or P position, the A/C
switch is OFF and all accessory switches are OFF.
*2: Only for California Specification vehicles, when you use the OBD II scan tool (excluding TOYOTA hand±
held tester).
*3: Only for California Specification vehicles, when you use the TOYOTA hand±held tester.

EM±2
± ENGINE MECHANICAL (5S±FE)CO/HC
1174 Author: Date:
If the CO/HC concentration does not comply with regulations,
troubleshoot in the order given below.
(1) Check oxygen sensor operation.
(See page DI±66)
(2) See the table below for possible causes, then in-
spect and correct the applicable causes if neces-
sary.
COHCSymptomCauses
NormalHighRough idle1. Faulty ignitions:
Incorrect timing
Fouled, shorted or improperly gapped plugs
Open or crossed hi
gh±tension cords Oen or crossed high±tension cords
2. Incorrect valve clearance
3. Leaky EGR valve
4. Leaky intake and exhaust valves
5. Leaky cylinder
LowHighRough idle
(Fluctuating HC reading)1. Vacuum leaks:
PCV hose
EGR valve
Intake manifold
Throttle body
IAC valve
Brake booster line
2. Lean mixture causing misfire
HighHighRough idle
(Black smoke from exhaust)1. Restricted air filter
2. Faulty SFI system
Faulty pressure regulator
Defective ECT sensor
Defective IAT sensor
Faulty ECM
Faulty injector
Faulty throttle position sensor
MAP sensor

A07358
Ground Wire
MAP Sensor
Vacuum Hose
Brake Booster
Vacuum Hose
Intake
Manifold
Air Hose for Air Assist System (California)
Intake Manifold
Stay
Injector
(Except California)
Knock Sensor 1
ConnectorPCV HoseVSV Connector
for EGR
VSV for EGREGR Valve and Vacuum
Modulator
Fuel Inlet Hose
Fuel Pulsation Damper
O±Ring
Injector
(California)Injector
Connector Spacer
Insulator
N´m (kgf´cm, ft´lbf)
Non±reusable part
Gasket
Insulator Grommet
O±Ring Gasket Gasket
* For use with SST
19 (195, 14)
34 (350, 25)* 29 (300, 21)
: Specified torque
x 6
Engine Wire
13 (130, 9)
Spacer
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±31
1203 Author: Date:

A07363
A07365
S05981
SST
S05990
(a)
(b)(c)
A07360
(e)(d)
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±35
1207 Author: Date:
(d) Loosen the union nut of the EGR pipe, and remove the
bolt, 2 nuts, the EGR valve, vacuum modulator, vacuum
hoses assembly and gasket.
12. DISCONNECT ENGINE WIRE FROM INTAKE MAN-
IFOLD
(a) Disconnect the engine wire clamp from the bracket on the
LH side of the intake manifold.
(b) Disconnect the 2 engine wire clamps from the 2 brackets
on the front side of the intake manifold.
13. DISCONNECT FUEL INLET HOSE FROM DELIVERY
PIPE
(a) Using SST, loosen the fuel pulsation damper.
SST 09612±24014 (09617±24011)
(b) Remove the fuel pulsation damper and 2 gaskets, and
disconnect the fuel inlet hose from the delivery pipe.
14. REMOVE INTAKE MANIFOLD
(a) Disconnect the MAP sensor vacuum hose from the gas
filter.
(b) Disconnect the brake booster vacuum hose from the in-
take manifold.
(c) Disconnect the PCV hose from the intake manifold.
(d) Remove the 2 bolts, and disconnect the 2 ground wires
from the intake manifold.
(e) Disconnect the knock sensor 1 connector.

A07362
Gray
Brown
No.1
No.2
No.3
No.4
A07361
California
A07359
S05990
(b)
(c)(d)
A07360
(e)
(f)
EM±60
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
1232 Author: Date:
(m) Connect the 4 injector connectors.
HINT:
The No.1 and No.3 injector connectors are brown, and the No.2
and No.4 injector connectors are gray.
16. California:
INSTALL AIR HOSE FOR AIR ASSIST SYSTEM
Connect the air hose to the cylinder head port.
17. INSTALL INTAKE MANIFOLD
(a) Install a new gasket and the intake manifold with the 6
bolts and 2 nuts. Uniformly tighten the bolts and nuts in
several passes.
Torque: 19 N´m (195 kgf´cm, 14 ft´lbf)
(b) Connect the MAP sensor vacuum hose to the gas filter.
(c) Connect the brake booster vacuum hose to the intake
manifold.
(d) Connect the PCV hose to the intake manifold.
(e) Connect the 2 ground wires to the intake manifold with the
2 bolts.
(f) Connect the knock sensor 1 connector.

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